Linux.Siggen.7762
Added to the Dr.Web virus database:
2024-07-08
Virus description added:
2024-07-08
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
Malicious functions:
Launches itself as a daemon
Gets access to SSH keys
- /root/.ssh/authorized_keys
Substitutes application name for:
Replaces the following system files:
Manages services:
- ['systemctl', 'daemon-reload']
- ['systemctl', 'enable', 'CLAMAV']
Launches processes:
- chattr -ia /root/.ssh/authorized_keys
- grep :65533
- touch -t 201605070000 /usr/bin/kill
- netstat -anp | grep :10771 | awk \x27{print $7}\x27 | awk -F\x27[/]\x27 \x27{print $1}\x27 | grep -v \x22-\x22 | xargs -I % kill -9 %
- touch -t 201903060000 /usr/bin/chmod
- systemctl daemon-reload;systemctl enable CLAMAV
- touch -t 201507020000 /usr/bin/cd
- netstat -anp | grep :25000 | awk \x27{print $7}\x27 | awk -F\x27[/]\x27 \x27{print $1}\x27 | grep -v \x22-\x22 | xargs -I % kill -9 %
- netstat -anp | grep :65533 | awk \x27{print $7}\x27 | awk -F\x27[/]\x27 \x27{print $1}\x27 | grep -v \x22-\x22 | xargs -I % kill -9 %
- grep :10771
- touch -t 201808020000 /usr/bin/rm
- grep -v -
- touch -t 201807090000 /usr/bin/ls
- xargs -I % kill -9 %
- touch -t 201905090000 /usr/bin/chattr
- grep :10991
- grep :25000
- /usr/bin/mawk awk {print $7}
- touch -t 201706090000 /usr/bin/find
- grep :6001
- chattr -ia /root/.ssh
- /usr/bin/mawk awk -F[/ {print $1}
- netstat -anp | grep :6001 | awk \x27{print $7}\x27 | awk -F\x27[/]\x27 \x27{print $1}\x27 | grep -v \x22-\x22 | xargs -I % kill -9 %
- netstat -anp | grep :10991 | awk \x27{print $7}\x27 | awk -F\x27[/]\x27 \x27{print $1}\x27 | grep -v \x22-\x22 | xargs -I % kill -9 %
- hash -r
Performs operations with the file system:
Modifies file access rights:
- /usr/sbin/.libso
- /usr/lib/.os-rslease
- /usr/local/bin/cd
- /usr/local/bin/kill
- /usr/local/bin/ls
- /usr/local/bin/cat
- /usr/local/bin/chmod
- /usr/local/bin/find
- /usr/local/bin/top
- /root/.ssh/authorized_keys
Creates folders:
Creates or modifies files:
- /usr/sbin/.libso
- /usr/lib/.os-rslease
- /usr/local/bin/cd
- /usr/local/bin/kill
- /usr/local/bin/ls
- /usr/local/bin/cat
- /usr/local/bin/chmod
- /usr/local/bin/find
- /usr/local/bin/top
- /etc/systemd/system/CLAMAV.service
- /usr/bin/ls
- /usr/bin/rm
- /usr/bin/chmod
- /usr/bin/kill
- /usr/bin/cd
- /usr/bin/find
Mounts file systems:
Changes time of creation/access/modification of files:
- /usr/bin/ls
- /usr/bin/rm
- /usr/bin/chmod
- /usr/bin/kill
- /usr/bin/cd
- /usr/bin/find
- /usr/bin/chattr
Network activity:
Awaits incoming connections on ports:
Establishes connection:
DNS ASK:
Curing recommendations
Linux
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