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Linux.Siggen.5565

Added to the Dr.Web virus database: 2023-08-10

Virus description added:

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:
  • 127.0.0.1:42071
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:
  • 66.##2.9.3:8080
Receives data from the following servers:
  • 66.##2.9.3:8080

Curing recommendations


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