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#!/bin/bash
#
##
# Linux Malware Detect v1.4.1
# (C) 2002-2011, R-fx Networks <proj@r-fx.org>
# (C) 2011, Ryan MacDonald <ryan@r-fx.org>
# inotifywait (C) 2007, Rohan McGovern <rohan@mcgovern.id.au>
# This program may be freely redistributed under the terms of the GNU GPL v2
##
#
ver=1.4.1
inspath=/opt/maldetect
cnf=$inspath/conf.maldet
intcnf=$inspath/internals.conf
datestamp=`date +"%m%d%y-%H%M"`
pub=1
user=`whoami`
userdir="$(cat /etc/passwd | grep "^$user:" | cut -d: -f6)"
quardir="$userdir/quarantine"
sessdir="$userdir/tmp/maldet/session"
tmpdir="$userdir/tmp/maldet/tmp"
hex_fifo="$userdir/tmp/maldet/hexfifo"
logf="$userdir/tmp/maldet/event_log"
header() {
echo "Linux Malware Detect v$ver"
echo " (C) 2002-2011, R-fx Networks <proj@r-fx.org>"
echo " (C) 2011, Ryan MacDonald <ryan@r-fx.org>"
echo "inotifywait (C) 2007, Rohan McGovern <rohan@mcgovern.id.au>"
echo "This program may be freely redistributed under the terms of the GNU GPL v2"
echo ""
}
if [ -f "$cnf" ] && [ ! "$cnf" == "" ]; then
source $cnf
else
header
echo "maldet($user:$$): {glob} $cnf not found, aborting."
exit 1
fi
if [ -f "$intcnf" ] && [ ! "$intcnf" == "" ]; then
source $intcnf
else
header
echo "maldet($user:$$): {glob} $intcnf not found, aborting."
exit 1
fi
if [ "$(whoami)" == "root" ] && [ ! "$1" == "--update" ]; then
echo "scanning as the root user is currently disabled."
exit 1
fi
mkdir -p $quardir >> /dev/null 2>&1
mkdir -p $sessdir >> /dev/null 2>&1
mkdir -p $tmpdir >> /dev/null 2>&1
mkdir -p $cldir >> /dev/null 2>&1
touch $logf
# commented out to avoid tripwire alarms
#echo $ver > $lmd_verf
# we don't strictly NEED wget to do a scan - commented this check out
#if [ -z "$wget" ]; then
# header
# echo "could not find required binary wget, aborting."
# exit 1
#fi
if [ -z "$md5sum" ]; then
header
echo "could not find required binary md5sum, aborting."
exit 1
fi
if [ -z "$od" ]; then
header
echo "could not find required binary od, aborting."
exit 1
fi
if [ -z "$find" ]; then
header
echo "could not find required binary find, aborting."
exit 1
fi
if [ -z "$perl" ]; then
header
echo "could not find required binary perl, aborting."
exit 1
fi
if [ -z "$EDITOR" ]; then
defedit=`which nano 2> /dev/null`
if [ -z "$defedit" ]; then
EDITOR=vi
else
EDITOR=nano
fi
fi
if [ "$hex_fifo_scan" == "1" ]; then
mkfifo=`which mkfifo 2> /dev/null`
if [ -f "$mkfifo" ] && [ ! -p "$hex_fifo" ]; then
$mkfifo -m 666 $hex_fifo
fi
fi
usage_short() {
cat <<EOF
signature set: $def_ver
usage maldet [-h|--help] [-l|--log] [-e|--report] [-p|--purge] [-c|--checkout]
[-b|--background] [-m|--monitor] [-k|--kill-monitor] [-a|--scan-all] [-r|--scan-recent]
[-q|--quarantine] [-s|--restore] [-n|--clean] [-u|--update] [-d|--update-ver]
EOF
}
usage_long() {
cat<<EOF
signature set: $def_ver
usage $0 [ OPTION ]
-b, --background
Execute operations in the background, ideal for large scans
e.g: maldet -b -r /home/?/public_html 7
-r, --scan-recent PATH DAYS
Scan files created/modified in the last X days (default: 7d, wildcard: ?)
e.g: maldet -r /home/?/public_html 2
-a, --scan-all PATH
Scan all files in path (default: /home, wildcard: ?)
e.g: maldet -a /home/?/public_html
-l, --log
View maldet log file events
-e, --report SCANID email
View scan report of most recent scan or of a specific SCANID and optionally
e-mail the report to a supplied e-mail address
e.g: maldet --report
e.g: maldet --report list
e.g: maldet --report 050910-1534.21135
e.g: maldet --report SCANID user@domain.com
-s, --restore FILE|SCANID
Restore file from quarantine queue to orginal path or restore all items from
a specific SCANID
e.g: maldet --restore /opt/maldetect/quarantine/config.php.23754
e.g: maldet --restore 050910-1534.21135
-q, --quarantine SCANID
Quarantine all malware from report SCANID
e.g: maldet --quarantine 050910-1534.21135
-n, --clean SCANID
Try to clean & restore malware hits from report SCANID
e.g: maldet --clean 050910-1534.21135
-co, --config-option VAR1=VALUE,VAR2=VALUE,VAR3=VALUE
Set or redefine the value of conf.maldet config options
e.g: maldet --config-option email_addr=you@domain.com,quar_hits=1
-p, --purge
Clear logs, quarantine queue, session and temporary data.
EOF
}
eout() {
arg=$1
stdout=$2
appn=maldet
if [ ! -f "$logf" ]; then
touch $logf
fi
logf_size=`$wc -l $logf | awk '{print$1}'`
if [ "$logf_size" -ge "20000" ]; then
trim=1000
printf "%s\n" "$trim,${logf_size}d" w | ed -s $logf
fi
if [ ! "$arg" == "" ]; then
echo "$(date +"%b %d %H:%M:%S") $(hostname -s) $appn($$): $arg" >> $logf
if [ ! -z "$stdout" ]; then
echo "$appn($$): $arg"
fi
fi
}
trap_exit() {
if [ "$svc" == "m" ]; then
echo
eout "{glob} monitor interrupt by user, sending kill." 1
monitor_kill
exit
elif [ "$svc" == "a" ] || [ "$sv" == "r" ]; then
echo
gen_report
if [ ! "$tot_hit" == "0" ]; then
if [ "$suppress_cleanhit" == "1" ] && [ ! "$tot_hit" == "$cl_hit" ]; then
alert file $nsess
elif [ "$suppress_cleanhit" == "0" ]; then
alert file $nsess
fi
fi
mv $scan_session $nsess_hits
rm -f $find_results $scan_session
eout "{glob} scan interrupt by user, aborting scan..." 1
eout "{scan} scan report saved, to view run: mal-scan $user --report $datestamp.$$" 1
if [ "$quar_hits" == "0" ] && [ ! "$tot_hit" == "0" ]; then
eout "{glob} quarantine is disabled! set quar_hits=1 in conf.maldet or to quarantine results run: mal-scan $user -q $datestamp.$$" 1
fi
exit
fi
}
clean() {
file="$1"
hitname="$2"
v="$3"
sh_hitname=`echo $hitname | sed -e 's/{HEX}//' -e 's/{MD5}//' | tr '.' ' ' | awk '{print$1"."$2"."$3}'`
if [ -d "$cldir" ] && [ "$quar_clean" == "1" ] && [ -f "$file" ]; then
if [ -f "$cldir/$sh_hitname" ] && [ -f "$file.info" ]; then
file_path=`cat $file.info | awk '{print$4}'`
eout "{clean} restoring $file for cleaning attempt" $v
restore "$file" >> /dev/null 2>&1
eout "{clean} trying to clean $file_path with $sh_hitname rule" $v
$(cat $cldir/$sh_hitname) $file_path
eout "{clean} rescanning $file_path for malware hits" $v
cleanst="1"
scan_stage1 "$file_path" >> /dev/null 2>&1
unset cleanst
if [ -f "$file_path" ]; then
echo "$file_path" >> $sessdir/clean.$$
echo "$file_path" >> $tmpdir/.clean.alltime
eout "{clean} clean successful on $file_path" $v
else
eout "{clean} clean failed on $file_path and returned to quarantine" $v
fi
elif [ -f "$cldir/$sh_hitname" ] && [ -f "$file" ]; then
file_path="$file"
eout "{clean} trying to clean $file with $sh_hitname rule" $v
$(cat $cldir/$sh_hitname) $file_path
eout "{clean} scanning $file for malware hits" $v
cleanst="1"
unset clean_failed
scan_stage1 "$file_path" 1 >> /dev/null 2>&1
unset cleanst
if [ "$clean_failed" == "1" ]; then
eout "{clean} clean failed on $file" $v
else
echo "$file" >> $sessdir/clean.$$
echo "$file_path" >> $tmpdir/.clean.alltime
eout "{clean} clean successful on $file" $v
fi
fi
else
eout "file path error on $file, aborting." $v
exit
fi
}
restore() {
file="$1"
fname=`basename $file`
if [ -f "$quardir/$file" ] && [ -f "$quardir/$file.info" ]; then
file_owner=`cat $quardir/$file.info | awk '{print$1}'`
file_group=`cat $quardir/$file.info | awk '{print$2}'`
file_mode=`cat $quardir/$file.info | awk '{print$3}'`
file_path=`cat $quardir/$file.info | awk '{print$4}'`
chown $file_owner.$file_group "$quardir/$file" >> /dev/null 2>&1
chmod $file_mode "$quardir/$file" >> /dev/null 2>&1
mv -f "$quardir/$file" "$file_path"
eout "{restore} quarantined file $file restored to $file_path" 1
elif [ -f "$file" ] && [ -f "$file.info" ]; then
file_owner=`cat $file.info | awk '{print$1}'`
file_group=`cat $file.info | awk '{print$2}'`
file_mode=`cat $file.info | awk '{print$3}'`
file_path=`cat $file.info | awk '{print$4}'`
chown $file_owner.$file_group "$file" >> /dev/null 2>&1
chmod $file_mode "$file" >> /dev/null 2>&1
mv -f "$file" "$file_path"
eout "{restore} quarantined file $file restored to $file_path" 1
else
eout "{restore} invalid file or could not be found" 1
fi
}
restore_hitlist() {
hitlist="$sessdir/session.hits.$1"
if [ -f "$hitlist" ]; then
val_aquar=`tail -n1 $hitlist | awk '{print$5}'`
val_mquar=`tail -n1 $hitlist | awk '{print$3}'`
if [ "$val_aquar" ]; then
for file in `cat $hitlist | awk '{print$5}'`; do
if [ -f "$file" ]; then
restore $file
fi
done
elif [ "$val_mquar" ]; then
for file in `cat $hitlist | awk '{print$3}'`; do
quar_file=`cat $logf | grep -w "$file" | tail -n1 | awk '{print$12}' | tr -d "'"`
restore $quar_file
done
else
eout "{restore} could not find a valid hit list to restore." 1
fi
fi
}
clean_hitlist() {
hitlist="$sessdir/session.hits.$1"
if [ -f "$hitlist" ]; then
for file in `cat $hitlist | awk '{print$3}'`; do
if [ -f "$file" ]; then
hitname=`cat $hitlist | grep $file | awk '{print$1}'`
clean "$file" "$hitname" "$1"
else
hitname=`cat $hitlist | grep $file | awk '{print$1}'`
quarfile=`cat $hitlist | grep $file | awk '{print$5}'`
clean "$quarfile" "$hitname" "$1"
fi
done
else
eout "{clean} invalid SCANID, aborting." 1
exit
fi
}
quar_hitlist() {
hitlist="$sessdir/session.hits.$1"
if [ -f "$hitlist" ]; then
for file in `cat $hitlist | awk '{print$3}'`; do
if [ -f "$file" ]; then
file_owner=`stat -c "%U" "$file"`
file_group=`stat -c "%G" "$file"`
file_mode=`stat -c "%a" "$file"`
if [ "$pub" == "1" ]; then
chattr -ia "$file" >> /dev/null 2>&1
chmod 400 "$file"
else
chattr -ia "$file"
chmod 000 "$file"
fi
file_name=`basename "$file"`
file_namewc=`echo $file_name | $wc -m`
rnd="$RANDOM"
mv "$file" "$quardir/$file_name.$rnd"
echo "$file_owner $file_group $file_mode $file" > $quardir/$file_name.$rnd.info
eout "{quar} malware quarantined from '$file' to '$quardir/$file_name.$rnd'" 1
echo "$file => $quardir/$file_name.$rnd" >> $tmpdir/.quar.alltime
if [ "$quar_susp" == "1" ]; then
quar_susp "$file"
fi
if [ "$quar_clean" == "1" ] && [ ! "$cleanst" == "1" ]; then
unset cleanst
hitname=`cat $hitlist | grep $file | awk '{print$1}'`
clean "$quardir/$file_name.$rnd" "$hitname" 1
fi
fi
done
else
echo "{quar} invalid quarantine hit list, aborting."
exit
fi
}
view_report() {
rid="$1"
if [ "$rid" == "list" ]; then
eout "Available Reports:"
for file in `ls /opt/maldetect/sess/session.[0-9]* 2> /dev/null`; do
SCANID=`cat $file | grep "SCAN ID"`
TIME=`cat $file | grep "TIME"`
if [ ! -z "$SCANID" ] && [ ! -z "$TIME" ]; then
echo "$TIME | $SCANID"
fi
done
exit
fi
if [ -f "$sessdir/session.$rid" ] && [ ! -z "$(echo $2 | grep '\@')" ]; then
cat $sessdir/session.$rid | mail -s "$email_subj" $2
eout "{report} report ID $rid sent to $2" 1
exit
fi
if [ "$rid" == "" ] && [ -f "$sessdir/session.last" ]; then
rid=`cat $sessdir/session.last`
$EDITOR $sessdir/session.$rid
elif [ -f "$sessdir/session.$rid" ]; then
$EDITOR $sessdir/session.$rid
else
echo "{report} no report found, aborting."
exit
fi
}
view() {
echo "Viewing last 50 lines from $logf:"
tail -n 50 $logf
}
purge() {
:> $logf
rm -f $tmpdir/* $quardir/* $sessdir/*
eout "{glob} logs and quarantine data cleared by user request (-p)" 1
}
quar_susp() {
file="$1"
user=`stat -c "%U" "$file"`
user_id=`id -u $user`
if [ ! "$user" == "" ] && [ "$user_id" -ge "$quar_susp_minuid" ]; then
if [ -f "/scripts/suspendacct" ]; then
if [ ! -f "/var/cpanel/suspended/$user" ]; then
/scripts/suspendacct $user "mal-scan $user --report $datestamp.$$" >> /dev/null 2>&1
eout "{quar} account $user cpanel suspended" 1
echo "$user" >> $sessdir/suspend.users.$$
echo "$user" >> $tmpdir/.susp.alltime
fi
else
if [ "$(grep $user /etc/passwd | cut -d':' -f7 | grep /bin/false)" == "" ]; then
/usr/sbin/usermod -s /bin/false $user >> /dev/null 2>&1
eout "{quar} account $user suspended; set 'usermod -s /bin/false'"
echo "$user" >> $sessdir/suspend.users.$$
echo "$user" >> $tmpdir/.susp.alltime
fi
fi
fi
}
quar() {
file="$1"
hitname="$2"
if [ -f "$file" ] && [ -d "$quardir" ]; then
if [ "$quar_hits" == "1" ]; then
file_owner=`stat -c "%U" "$file"`
file_group=`stat -c "%G" "$file"`
file_mode=`stat -c "%a" "$file"`
file_name=`basename "$file"`
file_namewc=`echo $file_name | $wc -m`
rnd="$RANDOM"
if [ "$quar_susp" == "1" ]; then
quar_susp "$file"
fi
chattr -ia "$file"
mv "$file" "$quardir/$file_name.$rnd"
if [ "$pub" == "1" ]; then
chmod 400 "$quardir/$file_name.$rnd"
else
chmod 000 "$quardir/$file_name.$rnd"
chown root.root "$quardir/$file_name.$rnd"
fi
echo "$file_owner $file_group $file_mode $file" > $quardir/$file_name.$rnd.info
eout "{quar} malware quarantined from '$file' to '$quardir/$file_name.$rnd'"
echo "$file => $quardir/$file_name.$rnd" >> $tmpdir/.quar.alltime
if [ ! -z "$scan_session" ]; then
echo "$hitname : $file => $quardir/$file_name.$rnd" >> $scan_session
fi
if [ "$quar_clean" == "1" ] && [ ! "$cleanst" == "1" ]; then
unset cleanst
clean "$quardir/$file_name.$rnd" "$hitname"
fi
else
if [ ! -z "$scan_session" ]; then
echo "$hitname : $file" >> $scan_session
fi
fi
else
eout "{quar} fatal error handling '$file'"
fi
}
scan() {
spath="$1"
spath=`echo $spath | tr '?' '*'`
days=$2
if [ ! -f "$find" ]; then
eout "{scan} could not locate find command" 1
exit
fi
if [ ! -f "$ignore_paths" ]; then
touch $ignore_paths
chmod 640 $ignore_paths
elif [ ! -f "$ignore_sigs" ]; then
touch $ignore_sigs
chmod 640 $ignore_sigs
fi
if [ ! "$days" == "all" ]; then
val=`echo $days | grep "[[:alpha:]]"`
if [ ! -z "$val" ]; then
eout "{scan} days value must be numeric value in the range of 1 - 60, reverting to default (7)." 1
days=7
elif [ "$days" -gt "60" ]; then
eout "{scan} days value must be numeric value in the range of 1 - 60, reverting to default (7)." 1
days=7
fi
fi
if [ ! -d $(echo $spath | tr '*' ' ' | awk '{print$1}') ] && [ ! -f $(echo $spath | tr '*' ' ' | awk '{print$1}') ]; then
eout "{scan} invalid path $spath" 1
exit
fi
scan_session=$tmpdir/.sess.$$
find_results=$tmpdir/.find.$$
touch $find_results
touch $scan_session
sigignore
hex_sigs=`$wc -l $dat_hexstring | awk '{print$1}'`
md5_sigs=`$wc -l $dat_md5hash | awk '{print$1}'`
tot_sigs=$[md5_sigs+hex_sigs]
if [ -z "$setmodsec" ]; then
eout "{scan} signatures loaded: $tot_sigs ($md5_sigs MD5 / $hex_sigs HEX)" 1
fi
if [ -f "$ignore_file_ext" ]; then
if [ ! "$(cat $ignore_file_ext)" == "" ]; then
for i in `cat $ignore_file_ext`; do
if [ "$ignore_fext" == "" ]; then
ignore_fext="! -iname *$i"
else
ignore_fext="$ignore_fext ! -iname *$i"
fi
done
fi
fi
if [ "$days" == "all" ]; then
if [ -z "$setmodsec" ]; then
eout "{scan} building file list for $spath, this might take awhile..." 1
fi
$find $spath -maxdepth $maxdepth -type f -size +${minfilesize}c -size -$maxfilesize $ignore_fext | grep -vf $ignore_paths > $find_results
else
if [ -z "$setmodsec" ]; then
eout "{scan} building file list for $spath of new/modified files from last $days days, this might take awhile..." 1
fi
$find $spath -maxdepth $maxdepth -type f -mtime -$days -size +${minfilesize}c -size -$maxfilesize $ignore_fext | grep -vf $ignore_paths > $find_results
fi
if [ ! -f "$find_results" ] || [ -z "$(cat $find_results)" ]; then
if [ -z "$setmodsec" ]; then
if [ "$days" == "all" ]; then
eout "{scan} scan returned zero results, please provide a new path." 1
exit
else
eout "{scan} scan returned zero results, please increase days range or provide a new path." 1
exit
fi
fi
fi
res_col="1"
move_to_col="echo -en \\033[${res_col}G"
tot_files=`$wc -l $find_results | awk '{print$1}'`
if [ -z "$setmodsec" ]; then
eout "{scan} file list completed, found $tot_files files..." 1
fi
touch $sessdir/clean.$$
if [ ! -f "$scan_session" ]; then
touch $scan_session
fi
if [ ! -z "$setmodsec" ]; then
eout "{scan.modsec} scan of $spath in progress (id: $datestamp.$$)"
fi
cnt=0
clamscan=`which clamscan 2> /dev/null`
if [ -f "$clamscan" ] && [ "$clamav_scan" == "1" ]; then
if [ -z "$setmodsec" ]; then
eout "{scan} found ClamAV clamscan binary, using as scanner engine..." 1
fi
if [ "$string_length_scan" == "1" ]; then
if [ -z "$setmodsec" ]; then
eout "{scan} preprocessing file list for string length hits..." 1
scan_strlen list "$find_results" >> /dev/null 2>&1
fi
fi
if [ -d "/var/lib/clamav" ]; then
clamav_db="-d /var/lib/clamav"
elif [ -d "/var/clamav" ]; then
clamav_db="-d /var/clamav"
fi
if [ -z "$setmodsec" ]; then
eout "{scan} scan of $spath ($tot_files files) in progress..." 1
fi
for hit in `$clamscan -d $inspath/sigs/rfxn.ndb -d $inspath/sigs/rfxn.hdb $clamav_db -r --infected --no-summary -f $find_results 2> /dev/null | tr -d ':' | sed 's/.UNOFFICIAL//' | awk '{print$2":"$1}'`; do
file=`echo $hit | tr ':' ' ' | awk '{print$2}'`
signame=`echo $hit | tr ':' ' ' | awk '{print$1}'`
clamsig=`echo $signame | grep -iE "HEX|MD5"`
if [ -z "$clamsig" ]; then
signame="{CAV}$signame"
fi
quar "$file" "$signame"
if [ ! "$set_background" == "1" ]; then
tot_hit=`$wc -l $scan_session | awk '{print$1}'`
cl_hit=`$wc -l $sessdir/clean.$$ | awk '{print$1}'`
if [ -z "$setmodsec" ]; then
$move_to_col && echo -n "maldet($user:$$): {scan} processing scan results for hits: $tot_hit hits $cl_hit cleaned"
fi
cnt=$tot_files
fi
done
else
for i in `cat $find_results | tr ' ' '%'`; do
i=`echo $i | tr '%' ' '`
cnt=$[cnt+1]
if [ ! -f "$scan_session" ]; then
touch $scan_session
fi
if [ -z "$setmodsec" ]; then
if [ ! "$set_background" == "1" ]; then
tot_hit=`$wc -l $scan_session | awk '{print$1}'`
cl_hit=`$wc -l $sessdir/clean.$$ | awk '{print$1}'`
$move_to_col && echo -n "maldet($user:$$): {scan} $cnt/$tot_files files scanned: $tot_hit hits $cl_hit cleaned"
fi
fi
if [ -f "$i" ]; then
scan_stage1 "$i" >> /dev/null 2>&1
fi
done
fi
if [ -z "$setmodsec" ]; then
echo
fi
tot_hit=`$wc -l $scan_session | awk '{print$1}'`
cl_hit=`$wc -l $sessdir/clean.$$ | awk '{print$1}'`
gen_report
if [ ! -z "$setmodsec" ]; then
if [ ! "$tot_hit" == "0" ]; then
echo "0 maldet: $hitname $spath"
eout "{scan.modsec} results returned FAIL hit found on $spath (id: $datestamp.$$)"
else
echo "1 maldet: OK"
eout "{scan.modsec} results returned OK on $spath (id: $datestamp.$$)"
fi
else
eout "{scan} scan completed on $spath: files $tot_files, malware hits $tot_hit, cleaned hits $cl_hit" 1
eout "{scan} scan report saved, to view run: mal-scan $user --report $datestamp.$$" 1
if [ "$quar_hits" == "0" ] && [ ! "$tot_hit" == "0" ]; then
eout "{scan} quarantine is disabled! set quar_hits=1 in conf.maldet or to quarantine results run: mal-scan $user -q $datestamp.$$" 1
fi
fi
if [ ! "$tot_hit" == "0" ]; then
if [ "$suppress_cleanhit" == "1" ] && [ ! "$tot_hit" == "$cl_hit" ]; then
alert file $nsess
elif [ "$suppress_cleanhit" == "0" ]; then
alert file $nsess
fi
fi
mv $scan_session $nsess_hits
rm -f $find_results $scan_session
}
scan_strlen() {
type=$1
file=$2
if [ "$string_length_scan" == "1" ] && [ "$type" == "file" ]; then
flen=`$wc -L $file 2> /dev/null | awk '{print$1}'`
if [ "$flen" -ge "$string_length" ]; then
eout "{strlen} malware string length hit on $file"
quar "$file" "{SA}stat.strlength"
fi
elif [ "$string_length_scan" == "1" ] && [ "$type" == "list" ]; then
list=$tmpdir/.strlen.flist.$$
cp $file $list
sed -i "s/'/\\\\'/g" $list
cat $list | xargs wc -L 2> /dev/null | grep -vw total >> $list.strlen
awk "{if (\$1>=$string_length) print\$2}" $list.strlen >> $list.hits
for i in `cat $list.hits`; do
if [ -f "$i" ]; then
eout "{strlen} malware string length hit on $i"
quar "$i" "{SA}stat.strlength"
fi
done
rm -f $list.strlen $list.hits $list
fi
}
scan_stage1() {
file="$1"
clchk="$2"
hash=`$md5sum "$file" | awk '{print$1}'`
if [ ! -z "$hash" ]; then
val_hash=`grep -m1 $hash $dat_md5hash`
if [ ! -z "$val_hash" ]; then
md5_hit=$hash
md5_hitname=`echo $val_hash | cut -d':' -f2`
eout "{md5hash} malware hit $md5_hitname on $file"
if [ "$clchk" == "1" ]; then
clean_failed=1
else
quar "$file" "$md5_hitname"
fi
unset val_hash md5_hit md5_hitname
else
if [ -f "$file" ]; then
scan_stage2 "$file" $clchk >> /dev/null 2>&1
fi
if [ -f "$file" ]; then
scan_strlen file "$file" >> /dev/null 2>&1
fi
fi
else
eout "{scan} error could not read or hash $file, do we have permission?"
fi
}
scan_stage2() {
file="$1"
clchk="$2"
ftype=`file -b "$file" | egrep "core file|compressed data|archive data"`
if [ -z "$ftype" ]; then
if [ -p "$hex_fifo" ] && [ "$hex_fifo_scan" == "1" ]; then
if [ "$OSTYPE" == "FreeBSD" ]; then
$od -v -N$hex_fifo_depth -tx1 "$file" | cut -c12-256 | tr -d ' \n' > $hex_fifo 2>&1 &
else
$od -v -w64 -N$hex_fifo_depth -tx1 "$file" | cut -c9-256 | tr -d '\n ' > $hex_fifo 2>&1 &
fi
val_hex=`$perl $hexmfifo_pl`
else
if [ "$OSTYPE" == "FreeBSD" ]; then
val_hex=`$perl $hexm_pl $($od -v -N$hexdepth -tx1 "$file" | cut -c12-256 | tr -d ' \n')`
else
val_hex=`$perl $hexm_pl $($od -v -w$hexdepth -N$hexdepth -tx1 "$file" | tr -d '\n ')`
fi
fi
if [ ! -z "$val_hex" ]; then
hex_hit=`echo $val_hex | awk '{print$1}'`
hex_hitname=`echo $val_hex | awk '{print$2}'`
eout "{hexstring} malware hit $hex_hitname on $file"
if [ "$clchk" == "1" ]; then
clean_failed=1
else
quar "$file" "$hex_hitname"
fi
unset val_hex hex_hit hex_hitname
fi
fi
}
gen_report() {
if [ -f "$scan_session" ]; then
tot_hit=`$wc -l $scan_session | awk '{print$1}'`
nsess_hits=$sessdir/session.hits.$datestamp.$$
echo "$datestamp.$$" > $sessdir/session.last
nsess=$sessdir/session.$datestamp.$$
cat >> $nsess <<EOF
malware detect scan report for $(hostname):
SCAN ID: $datestamp.$$
TIME: $(date +"%b %e %H:%M:%S %z")
PATH: $spath
EOF
if [ ! "$days" == "all" ]; then
cat >> $nsess <<EOF
RANGE: $days days
EOF
fi
cat >> $nsess <<EOF
TOTAL FILES: $tot_files
TOTAL HITS: $tot_hit
TOTAL CLEANED: $cl_hit
EOF
if [ "$quar_hits" == "0" ] && [ ! "$tot_hit" == "0" ]; then
cat >> $nsess <<EOF
NOTE: quarantine is disabled! set quar_hits=1 in conf.maldet or to quarantine results run: mal-scan $user -q $datestamp.$$
EOF
fi
if [ "$quar_clean" -ne "0" ]; then
if [ -f "$sessdir/clean.$$" ] && [ ! -z "$(cat $sessdir/clean.$$)" ]; then
cat >> $nsess <<EOF
CLEANED & RESTORED FILES:
$(cat $sessdir/clean.$$)
EOF
fi
fi
if [ "$quar_susp" -ne "0" ]; then
if [ -f "$sessdir/suspend.users.$$" ] && [ ! -z "$(cat $sessdir/suspend.users.$$)" ]; then
cat >> $nsess <<EOF
SUSPENDED ACCOUNTS:
$(cat $sessdir/suspend.users.$$)
EOF
fi
fi
if [ "$tot_hit" -ne "0" ]; then
echo "FILE HIT LIST:" >> $nsess
cat $scan_session >> $nsess
fi
cat >> $nsess <<EOF
===============================================
Linux Malware Detect v$ver < proj@rfxn.com >
EOF
fi
}
trim_log() {
log=$1
logtrim=$2
if [ -f "$log" ]; then
log_size=`$wc -l $log | awk '{print$1}'`
if [ "$log_size" -gt "$logtrim" ]; then
trim=$[logtrim/10]
printf "%s\n" "$trim,${log_size}d" w | ed -s $log
fi
fi
}
alert() {
type=$1
file="$2"
if [ "$email_alert" == "1" ]; then
if [ "$type" == "file" ] && [ -f "$file" ]; then
cat $file | $mail -s "$email_subj" $email_addr
if [ ! "$(whoami)" == "root" ] && [ -z "$(echo $2 | grep '\@')" ]; then
if [ -z "$setmodsec" ]; then
eout "{alert} sent scan report to config default $email_addr" 1
eout "{alert} send scan report to an alternate address with: mal-scan $user --report $datestamp.$$ you@domain.com" 1
else
eout "{alert} sent scan report to config default $email_addr"
fi
else
eout "{alert} sent scan report to $email_addr" 1
fi
elif [ "$type" == "daily" ]; then
rm -f $tmpdir/.daily.alert.hits $tmpdir/.daily.clean.hits $tmpdir/.daily.monitor.alert $tmpdir/.daily.susp.hits
scan_session=`cat $sessdir/session.monitor.current`
$tlog $scan_session daily.alert > $tmpdir/.daily.alert.hits
$tlog $tmpdir/.clean.alltime daily.clean.alert > $tmpdir/.daily.clean.hits
$tlog $tmpdir/.monitor.scanned.alltime daily.monitor.alert > $tmpdir/.daily.monitor.alert
$tlog $tmpdir/.susp.alltime daily.susp.alert > $tmpdir/.daily.susp.hits
tot_hits=`$wc -l $tmpdir/.daily.alert.hits | awk '{print$1}'`
tot_cl=`$wc -l $tmpdir/.daily.clean.hits | awk '{print$1}'`
tot_files=`$wc -l $tmpdir/.daily.monitor.alert | awk '{print$1}'`
tot_susp=`$wc -l $tmpdir/.daily.susp.hits | awk '{print$1}'`
trim_log $tmpdir/.monitor.scanned.alltime 5000
trim_log $tmpdir/.clean.alltime 5000
trim_log $tmpdir/.quar.alltime 5000
trim_log $tmpdir/.susp.alltime 5000
$tlog $sessdir/session.hits.$datestamp.$$ daily.alert >> /dev/null 2>&1
$tlog $tmpdir/.clean.alltime daily.clean.alert >> /dev/null 2>&1
$tlog $tmpdir/.monitor.scanned.alltime daily.monitor.alert >> /dev/null 2>&1
$tlog $tmpdir/.susp.alltime daily.susp.alert >> /dev/null 2>&1
if [ ! -z "$(cat $tmpdir/.daily.alert.hits)" ]; then
tmpf=$tmpdir/.alert
rm -f $tmpf
if [ "$tot_hits" -gt "$tot_files" ]; then
tot_files=$tot_hits
fi
cat >> $tmpf <<EOF
malware detect $type monitor report for $(hostname):
SCAN ID: $datestamp.$$
TIME: $(date +"%b %e %H:%M:%S %z")
TOTAL FILES: $tot_files
TOTAL HITS: $tot_hits
TOTAL CLEANED: $tot_cl
EOF
if [ -f "$tmpdir/.daily.clean.hits" ] && [ ! "$tot_cl" == "0" ]; then
cat >> $tmpf <<EOF
CLEANED & RESTORED FILES:
$(cat $tmpdir/.daily.clean.hits)
EOF
fi
if [ -f "$tmpdir/.daily.susp.hits" ] && [ ! "$tot_susp" == "0" ]; then
cat >> $tmpf <<EOF
SUSPENDED ACCOUNTS:
$(cat $tmpdir/.daily.susp.hits)
EOF
fi
cat >> $tmpf <<EOF
FILE HIT LIST:
$(cat $tmpdir/.daily.alert.hits)
===============================================
Linux Malware Detect v$ver < proj@rfxn.com >
EOF
cp $tmpf $sessdir/session.$datestamp.$$
echo "$datestamp.$$" > $sessdir/session.last
email_subj="$email_subj :: $type"
cat $tmpf | $mail -s "$email_subj" $email_addr
eout "{alert} sent $type alert to $email_addr"
rm -f $tmpf $tmpdir/.daily.alert.hits $tmpdir/.daily.clean.hits $tmpdir/.daily.monitor.alert $tmpdir/.daily.susp.hits
fi
elif [ "$type" == "weekly" ]; then
rm -f $tmpdir/.weekly.alert.hits $tmpdir/.weekly.clean.hits $tmpdir/.weekly.monitor.alert $tmpdir/.daily.susp.hits
scan_session=`cat $sessdir/session.monitor.current`
$tlog $scan_session weekly.alert > $tmpdir/.weekly.alert.hits
$tlog $tmpdir/.clean.alltime weekly.clean.alert > $tmpdir/.weekly.clean.hits
$tlog $tmpdir/.monitor.scanned.alltime weekly.monitor.alert > $tmpdir/.weekly.monitor.alert
$tlog $tmpdir/.susp.alltime weekly.susp.alert > $tmpdir/.weekly.susp.hits
tot_hits=`$wc -l $tmpdir/.weekly.alert.hits | awk '{print$1}'`
tot_cl=`$wc -l $tmpdir/.weekly.clean.hits | awk '{print$1}'`
tot_files=`$wc -l $tmpdir/.weekly.monitor.alert | awk '{print$1}'`
tot_susp=`$wc -l $tmpdir/.weekly.susp.hits | awk '{print$1}'`
trim_log $tmpdir/.monitor.scanned.alltime 5000
trim_log $tmpdir/.clean.alltime 5000
trim_log $tmpdir/.quar.alltime 5000
trim_log $tmpdir/.susp.alltime 5000
$tlog $sessdir/session.hits.$datestamp.$$ weekly.alert >> /dev/null 2>&1
$tlog $tmpdir/.clean.alltime weekly.clean.alert >> /dev/null 2>&1
$tlog $tmpdir/.monitor.scanned.alltime weekly.monitor.alert >> /dev/null 2>&1
$tlog $tmpdir/.susp.alltime weekly.susp.alert >> /dev/null 2>&1
if [ ! -z "$(cat $tmpdir/.weekly.alert.hits)" ]; then
tmpf=$tmpdir/.alert
rm -f $tmpf
if [ "$tot_hits" -gt "$tot_files" ]; then
tot_files=$tot_hits
fi
cat >> $tmpf <<EOF
malware detect $type monitor report for $(hostname):
SCAN ID: $datestamp.$$
TIME: $(date +"%b %e %H:%M:%S %z")
TOTAL FILES: $tot_files
TOTAL HITS: $tot_hits
TOTAL CLEANED: $tot_cl
EOF
if [ -f "$tmpdir/.weekly.clean.hits" ] && [ ! "$tot_cl" == "0" ]; then
cat >> $tmpf <<EOF
CLEANED & RESTORED FILES:
$(cat $tmpdir/.weekly.clean.hits)
EOF
fi
if [ -f "$tmpdir/.weekly.susp.hits" ] && [ ! "$tot_susp" == "0" ]; then
cat >> $tmpf <<EOF
SUSPENDED ACCOUNTS:
$(cat $tmpdir/.weekly.susp.hits)
EOF
fi
cat >> $tmpf <<EOF
FILE HIT LIST:
$(cat $tmpdir/.weekly.alert.hits)
===============================================
Linux Malware Detect v$ver < proj@rfxn.com >
EOF
echo "$datestamp.$$" > $sessdir/session.last
cp $tmpf $sessdir/session.$datestamp.$$
email_subj="$email_subj :: $type"
cat $tmpf | $mail -s "$email_subj" $email_addr
eout "{alert} sent $type alert to $email_addr"
rm -f $tmpf $tmpdir/.weekly.alert.hits $tmpdir/.weekly.clean.hits $tmpdir/.weekly.monitor.alert $tmpdir/.weekly.susp.hits
fi
else
eout "{alert} file input error, alert discarded."
fi
fi
}
monitor_kill() {
touch $tmpdir/stop_monitor
inotify_pid=`pidof inotifywait`
if [ -f "$tmpdir/monitor.pid" ]; then
monitor_pid=`cat $tmpdir/monitor.pid`
fi
kill -9 $inotify_pid $monitor_pid >> /dev/null 2>&1
killall -9 inotifywait >> /dev/null 2>&1
exit
}
monitor_cycle() {
echo $$ > $tmpdir/monitor.pid
if [ ! -f "$tmpdir/stop_monitor" ]; then
inotify_pid=`pidof inotifywait`
if [ -z "$inotify_pid" ]; then
eout "{mon} no inotify process found, exiting (are we a zombie process?)" 1
exit
fi
log_size=`$wc -l $inotify_log | awk '{print$1}'`
if [ "$log_size" -ge "$inotify_trim" ]; then
trim=1000
printf "%s\n" "$trim,${log_size}d" w | ed -s $inotify_log
eout "{mon} inotify log file trimmed"
fi
sleep $inotify_stime
monitor_check
else
rm -f $tmpdir/stop_monitor
eout "{mon} monitoring terminated by user, inotify killed."
exit
fi
}
monitor_check() {
for file in `$tlog $inotify_log inotify | grep -E "CREATE|MODIFY|MOVED_FROM|MOVED_TO" | awk '{print$1}' | sort | uniq | tr ' ' '%'`; do
file=`echo $file | tr '%' ' '`
if [ -f "$file" ]; then
sigignore 1
echo "$file" >> $tmpdir/.monitor.scanned.alltime
eout "{mon} inotify file scan $file"
scan_stage1 "$file" >> /dev/null 2>&1
## CREATE,ISDIR: directory check for running inotifywait without -r
# elif [ -d "$file" ]; then
# sigignore 1
# eout "{mon} inotify directory scan $file"
# find $file -maxdepth $maxdepth -type f -mmin -5 -size +${minfilesize}c -size -$maxfilesize > $tmpdir/.mmin.find.$$
# for dirfile in `cat $tmpdir/.mmin.find.$$ | tr ' ' '%'`; do
# dirfile=`echo $dirfile | tr '%' ' '`
# echo "$dirfile" >> $tmpdir/.monitor.scanned.alltime
# eout "{mon} inotify file scan $dirfile"
# scan_stage1 "$dirfile" >> /dev/null 2>&1
# done
# rm -f $tmpdir/.mmin.find.$$
##
fi
done
monitor_cycle
}
monitor_init() {
inopt="$1"
scan_session=$sessdir/session.hits.$datestamp.$$
touch $scan_session
echo "$scan_session" > $sessdir/session.monitor.current
if [ "$inopt" == "" ]; then
eout "invalid usage of -m|--monitor, aborting." 1
exit
fi
if [ ! -f "$inotify" ]; then
eout "{mon} could not find inotify command" 1
exit
fi
if [ -f "/boot/System.map-$(uname -r)" ]; then
ksup=`grep -i inotify_ /boot/System.map-$(uname -r)`
if [ -z "$ksup" ]; then
eout "{mon} kernel does not support inotify(), aborting." 1
exit
fi
elif [ -f "/boot/config-$(uname -r)" ]; then
ksup=`grep -m1 CONFIG_INOTIFY /boot/config-$(uname -r)`
if [ -z "$ksup" ]; then
eout "{mon} kernel does not support inotify(), aborting." 1
exit
fi
fi
inotify_pid=`pidof inotifywait`
if [ ! -z "$inotify_pid" ]; then
eout "{mon} existing inotify process detected (try -k): $inotify_pid" 1
exit
fi
rm -f $tmpdir/stop_monitor $tmpdir/inotifywait.pid
procs=`cat /proc/cpuinfo | grep -c processor`
users_tot=`cat /etc/passwd | grep -ic home`
inotify_user_watches=$[inotify_base_watches*users_tot]
eout "{mon} set inotify max_user_instances to 128" 1
echo 128 > /proc/sys/fs/inotify/max_user_instances
eout "{mon} set inotify max_user_watches to $inotify_user_watches" 1
echo $inotify_user_watches > /proc/sys/fs/inotify/max_user_watches
icnt=0
inotify_fpaths=$sessdir/inotify.paths.$$
rm -f $inotify_fpaths
touch $inotify_log
chmod 640 $inotify_log
if [ "$(echo $inopt | grep -E "users|user|USERS|USER")" ]; then
for i in `cat /etc/passwd | cut -d':' -f1,3,6`; do
user=`echo $i | cut -d':' -f1`
user_id=`echo $i | cut -d':' -f2`
user_home=`echo $i | cut -d':' -f3`
icnt=$[icnt+1]
if [ "$user_id" -ge "$inotify_minuid" ]; then
if [ ! -z "$inotify_webdir" ] && [ -d "$user_home/$inotify_webdir" ]; then
echo "$user_home/$inotify_webdir" >> $inotify_fpaths
eout "{mon} added $user_home/$inotify_webdir to inotify monitoring array" 1
elif [ -d "$user_home" ]; then
echo "$user_home" >> $inotify_fpaths
eout "{mon} added $user_home to inotify monitoring array" 1
else
eout "{mon} could not find any suitable user home paths"
fi
fi
done
if [ -d "/dev/shm" ]; then
echo "/dev/shm" >> $inotify_fpaths
eout "{mon} added /dev/shm to inotify monitoring array" 1
fi
if [ -d "/var/tmp" ]; then
echo "/var/tmp" >> $inotify_fpaths
eout "{mon} added /var/tmp to inotify monitoring array" 1
fi
if [ -d "/tmp" ]; then
echo "/tmp" >> $inotify_fpaths
eout "{mon} added /tmp to inotify monitoring array" 1
fi
elif [ -f "$inopt" ]; then
tot_paths=`$wc -l $inotify_fpaths | awk '{print$1}'`
if [ "$tot_paths" == "0" ]; then
eout "{mon} no paths specified in $inopt, aborting." 1
exit
fi
for i in `cat $inopt`; do
if [ -d "$i" ]; then
eout "{mon} added $i to inotify monitoring array" 1
echo "$i" >> $inotify_fpaths
else
eout "{mon} ignored invalid path $i" 1
fi
done
elif [ -d "$inopt" ] || [ "$(echo $inopt | grep -E ".*,.*")" ]; then
for i in `echo $inopt | tr ',' '\n'`; do
if [ -d "$i" ]; then
eout "{mon} added $i to inotify monitoring array" 1
echo "$i" >> $inotify_fpaths
else
eout "{mon} invalid path $i specified, ignoring." 1
fi
done
else
eout "{mon} no valid option or invalid file/path provided, aborting." 1
exit
fi
if [ -f "$ignore_inotify" ]; then
cnt=`$wc -l $ignore_inotify | awk '{print$1}'`
if [ "$cnt" > "0" ]; then
for igfile in `cat $ignore_inotify`; do
if [ "$igregexp" ]; then
igregexp="$igregexp|$igfile"
else
igregexp="($igfile"
fi
done
igregexp="$igregexp)"
exclude="--exclude $igregexp"
fi
fi
tot_paths=`$wc -l $inotify_fpaths | awk '{print$1}'`
eout "{mon} starting inotify process on $tot_paths paths, this might take awhile..." 1
$nice -n $inotify_nice $inotify -d -r -o $inotify_log --fromfile $inotify_fpaths $exclude --timefmt "%d %b %H:%M:%S" --format "%w%f %e %T" -m -e create,move,modify >> /dev/null 2>&1 &
sleep 2
inotify_pid=`pidof inotifywait`
if [ -z "$inotify_pid" ]; then
eout "{mon} no inotify process found, check $inotify_log for errors." 1
exit
else
eout "{mon} inotify startup successful (pid: $inotify_pid)" 1
eout "{mon} inotify monitoring log: $inotify_log" 1
echo "$inotify_pid" > $tmpdir/inotifywait.pid
fi
monitor_cycle >> /dev/null 2>&1 &
}
checkout() {
file="$1"
host=ftp.rfxn.com
user=anonymous
passwd=anonymous
upath=incoming
cfile="$(pwd)/$file"
if [ -f "$cfile" ]; then
file=$cfile
fi
if [ -f "$file" ]; then
eout "{checkout} uploading $file to $host" 1
ftp -v -n -i $host << EOT
user $user@rfxn.com $passwd
prompt
cd $upath
lcd $lcd
binary
put "$file" "$RANDOM.$$.bin"
ascii
put "$file" "$RANDOM.$$.ascii"
bye
EOT
elif [ -d "$file" ]; then
for i in `find $file -type f`; do
ftp -v -n -i $host << EOT
user $user $passwd
prompt
cd $upath
lcd $lcd
binary
put "$i" "$RANDOM.$$.bin"
ascii
put "$i" "$RANDOM.$$.ascii"
bye
EOT
done
fi
}
sigignore() {
sil=$1
chk=`$wc -l $ignore_sigs | awk '{print$1}'`
if [ ! "$chk" == "0" ]; then
cat $dat_hexstring | grep -vf $ignore_sigs > $dat_hexstring.new
mv $dat_hexstring.new $dat_hexstring
cat $dat_md5hash | grep -vf $ignore_sigs > $dat_md5hash.new
mv $dat_md5hash.new $dat_md5hash
chmod 640 $dat_md5hash $dat_hexstring
if [ "$sil" == "1" ]; then
eout "{glob} processed $chk signature ignore entries"
else
eout "{glob} processed $chk signature ignore entries" 1
fi
fi
}
lmdup() {
ofile=$tmpdir/.lmdup_vercheck.$$
tmp_inspath=/usr/local/lmd_update
rm -rf $tmp_inspath
rm -f $ofile
mkdir -p $tmp_inspath
chmod 750 $tmp_inspath
eout "{update} checking for available updates..." 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -q -t5 -T5 "$lmdurl_ver" -O $ofile >> /dev/null 2>&1
if [ -s "$ofile" ]; then
installed_ver=`echo $ver | tr -d '.'`
current_ver=`cat $ofile | tr -d '.'`
current_hver=`cat $ofile`
if [ "$current_ver" -gt "$installed_ver" ]; then
eout "{update} new version $current_hver found, updating..." 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -q -t5 -T5 "http://www.rfxn.com/downloads/maldetect-current.tar.gz" -O "$tmp_inspath/maldetect-current.tar.gz"
if [ -f "$tmp_inspath/maldetect-current.tar.gz" ]; then
cd $tmp_inspath/
tar xfz maldetect-current.tar.gz
cd maldetect-*
chmod 750 install.sh
sh -c './install.sh' >> /dev/null 2>&1
eout "{update} completed update v$ver => v$current_hver, running signature updates..." 1
$inspath/maldet --update 1
eout "{update} update and config import completed." 1
else
eout "{update} could not download maldetect-current.tar.gz, please try again later." 1
exit
fi
else
eout "{update} hashing install files and checking against server..." 1
md5sum $inspath/maldet $inspath/internals.conf $inspath/inotify/tlog $inspath/inotify/inotifywait $inspath/clean/* | awk '{print$1}' | tr '\n' ' ' | tr -d ' ' > $lmd_hashf
ofile_hash=$tmpdir/.lmdup_hashcheck
$wget --referer="http://www.rfxn.com/LMD-$ver" -q -t5 -T5 "$lmdurl_hash" -O $ofile_hash >> /dev/null 2>&1
if [ -f "$ofile_hash" ]; then
installed_hash=`cat $lmd_hashf`
current_hash=`cat $ofile_hash`
if [ ! "$installed_hash" == "$current_hash" ]; then
eout "{update} version check shows latest but hash check failed, forcing update..." 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -q -t5 -T5 "http://www.rfxn.com/downloads/maldetect-current.tar.gz" -O "$tmp_inspath/maldetect-current.tar.gz"
if [ -f "$tmp_inspath/maldetect-current.tar.gz" ]; then
cd $tmp_inspath/
tar xfz maldetect-current.tar.gz
cd maldetect-*
chmod 750 install.sh
sh -c './install.sh' >> /dev/null 2>&1
eout "{update} completed update v$ver => v$current_hver, running signature updates..." 1
$inspath/maldet --update 1
eout "{update} update and config import completed." 1
else
eout "{update} could not download maldetect-current.tar.gz, please try again later." 1
exit
fi
else
eout "{update} latest version already installed." 1
fi
else
eout "{update} latest version already installed." 1
fi
fi
else
eout "{update} could not download version file from server, please try again later." 1
exit
fi
rm -rf $tmp_inspath $ofile $ofile_hash
}
sigup() {
eout "{sigup} performing signature update check..." 1
if [ -z "$def_ver" ]; then
eout "{sigup} could not determine signature version" 1
def_ver=0
else
eout "{sigup} local signature set is version $def_ver" 1
fi
if [ ! -f "$wget" ]; then
eout "{sigup} could not locate wget command" 1
exit
fi
tmpf="$tmpdir/.hver$$"
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_ver -O $tmpf
if [ ! -f "$tmpf" ]; then
eout "{sigup} could not download signature data from server, please try again later." 1
exit
fi
if [ -z $(cat $tmpf) ]; then
eout "{sigup} could not download signature data from server, please try again later." 1
exit
fi
nver=`cat $tmpf`
if [ -f "$dat_md5hash" ]; then
lines_md5=`cat $dat_md5hash | $wc -l | awk '{print$1}'`
else
lines_md5=0
fi
if [ -f "$dat_hexstring" ]; then
lines_hex=`cat $dat_hexstring | $wc -l | awk '{print$1}'`
else
lines_hex="0"
fi
if [ ! -f "$dat_md5hash" ] || [ ! -f "$dat_hexstring" ]; then
def_ver=2011041200000
eout "{sigup} signature files missing or corrupted, forcing update..." 1
elif [ "$lines_md5" -lt "1000" ] || [ "$lines_hex" -lt "1000" ]; then
def_ver=2011041200000
eout "{sigup} signature files corrupted, forcing update..." 1
fi
if [ "$nver" != "$def_ver" ]; then
eout "{sigup} new signature set ($nver) available" 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_md5hash -O $dat_md5hash
eout "{sigup} downloaded $defurl_md5hash" 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_hex -O $dat_hexstring
eout "{sigup} downloaded $defurl_hex" 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_hex_cav -O $dat_hex_cav
eout "{sigup} downloaded $defurl_hex_cav" 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_md5_cav -O $dat_md5_cav
eout "{sigup} downloaded $defurl_md5_cav" 1
$wget --referer="http://www.rfxn.com/LMD-$ver" -t5 -T5 -q $defurl_cl -O $tmpdir/maldet-clean.tgz
cd $tmpdir/
tar xfz $tmpdir/maldet-clean.tgz
cp -f $tmpdir/clean/* $cldir
rm -rf $tmpdir/maldet-clean.tgz $tmpdir/clean
eout "{sigup} downloaded $defurl_cl" 1
cat $tmpf > $def_verf
eout "{sigup} signature set update completed" 1
sigignore
hex_sigs=`$wc -l $dat_hexstring | awk '{print$1}'`
md5_sigs=`$wc -l $dat_md5hash | awk '{print$1}'`
tot_sigs=$[md5_sigs+hex_sigs]
eout "{sigup} $tot_sigs signatures ($md5_sigs MD5 / $hex_sigs HEX)" 1
else
eout "{sigup} latest signature set already installed" 1
fi
rm -f $tmpf
}
if [ -z "$1" ]; then
header
usage_short
else
while [ -n "$1" ]; do
case "$1" in
#--mkpubpaths)
# if [ "$public_scan" == "1" ]; then
# chmod 711 $inspath/pub
# for user in `cat /etc/passwd | cut -d ':' -f1`; do
# uid=`id --user $user`
# if [ -z "$uid" ]; then
# uid=9
# fi
# if [ -z "$pubuser_minuid" ]; then
# pubuser_minuid=10
# fi
# if [ "$uid" -ge "$pubuser_minuid" ] && [ ! -d "$inspath/pub/$user" ]; then
# mkdir -p $inspath/pub/$user/quar $inspath/pub/$user/sess $inspath/pub/$user/tmp >> /dev/null 2>&1
# touch $inspath/pub/$user/event_log >> /dev/null 2>&1
# chown -R $user.$user $inspath/pub/$user >> /dev/null 2>&1
# chmod 750 $inspath/pub/$user $inspath/pub/$user/quar $inspath/pub/$user/sess $inspath/pub/$user/tmp >> /dev/null 2>&1
# chmod 640 $inspath/pub/$user/event_log >> /dev/null 2>&1
# eout "{glob} created public scanning paths for user $user"
# fi
# unset uid user
# done
# exit
# else
# header
# echo "public scanning support not enabled in conf.maldet, aborting."
# exit
# fi
#;;
#--modsec)
# setmodsec=1
#;;
-co|--config-option)
shift
tmpco=$tmpdir/config.cli
rm -f $tmpco
touch $tmpco
echo $1 | sed -e 's/--config-option //' -e 's/-co //' | tr -d ' ' | tr ',' '\n' > $tmpco
. $tmpco
rm -f $tmpco
;;
-qd)
shift
if [ -d "$1" ]; then
eout "{scan} set quarantine path: $1" 1
quardir="$1"
fi
;;
-b|--background)
set_background=1
;;
# --alert-daily)
# alert daily
# ;;
# --alert-weekly)
# alert weekly
# ;;
# -m|--monitor)
# header
# shift
# if [ "$OSTYPE" == "FreeBSD" ]; then
# eout "{mon} not currently supported under FreeBSD" 1
# else
# svc=m
# trap trap_exit 2
# monitor_init "$1"
# fi
# ;;
# -k|--kill-monitor)
# header
# if [ "$OSTYPE" == "FreeBSD" ]; then
# eout "{mon} not currently supported under FreeBSD" 1
# else
# eout "{mon} sent kill to monitor service" 1
# monitor_kill
# fi
# ;;
-a|--scan-all)
shift
if [ -z "$setmodsec" ]; then
header
fi
svc=a
trap trap_exit 2
spath="$1"
if [ "$spath" == "" ]; then
spath=/home
fi
if [ "$set_background" == "1" ]; then
eout "{scan} launching scan of $spath to background, see $logf for progress" 1
scan "$spath" all >> /dev/null 2>&1 &
else
scan "$spath" all
fi
;;
-r|--scan-recent)
header
svc=r
trap trap_exit 2
shift
spath="$1"
shift
days="$1"
if [ -z "$spath" ]; then
eout "{scan} no path defined" 1
exit
fi
if [ -z "$days" ]; then
days=7
fi
if [ "$set_background" == "1" ]; then
eout "{scan} launching scan of $spath changes in last ${days}d to background, see $logf for progress" 1
scan "$spath" "$days" >> /dev/null 2>&1 &
else
scan "$spath" "$days"
fi
;;
-l|--log)
header
view
;;
-e|--report)
header
shift
view_report "$1" "$2"
;;
-p|--purge)
header
purge
;;
#-d|--update-ver|--update-version)
# header
# lmdup
#;;
-u|--update)
shift
if [ ! "$1" == "1" ]; then
header
fi
sigup
;;
-s|--restore)
header
shift
if [ -f "$sessdir/session.hits.$1" ]; then
restore_hitlist "$1"
else
restore "$1"
fi
;;
-q|--quarantine)
header
shift
quar_hitlist "$1"
;;
-n|--clean)
header
shift
clean_hitlist "$1"
;;
-h|--help)
header
usage_long
;;
*)
header
usage_short
esac
shift
done
fi