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Linux.Siggen.6887

Added to the Dr.Web virus database: 2024-04-01

Virus description added:

Technical Information

Malicious functions:
Removes itself
Launches itself as a daemon
Substitutes application name for:
  • /usr/bin/dbus-daemon:mai!
Launches processes:
  • useradd -m s1gna1bot
  • chpasswd
  • echo \x22s1gna1bot:ufohackyourdevicefree\x22 | chpasswd
Performs operations with the file system:
Modifies file access rights:
  • /home/s1gna1bot
  • /home/s1gna1bot/.profile
  • /home/s1gna1bot/.bash_logout
  • /home/s1gna1bot/.bashrc
  • /etc/passwd-
  • /etc/passwd+
  • /etc/shadow-
  • /etc/shadow+
  • /etc/group-
  • /etc/group+
  • /etc/gshadow-
  • /etc/gshadow+
  • /etc/subuid-
  • /etc/subuid+
  • /etc/subgid-
  • /etc/subgid+
  • /etc/nshadow
Modifies file owner:
  • /home/s1gna1bot
  • /home/s1gna1bot/.profile
  • /home/s1gna1bot/.bash_logout
  • /home/s1gna1bot/.bashrc
  • /etc/passwd-
  • /etc/passwd+
  • /etc/shadow-
  • /etc/shadow+
  • /etc/group-
  • /etc/group+
  • /etc/gshadow-
  • /etc/gshadow+
  • /etc/subuid-
  • /etc/subuid+
  • /etc/subgid-
  • /etc/subgid+
  • /etc/nshadow
Creates folders:
  • /home/s1gna1bot
Creates symlinks:
  • /etc/passwd.lock
  • /etc/group.lock
  • /etc/gshadow.lock
  • /etc/subuid.lock
  • /etc/subgid.lock
  • /etc/shadow.lock
Creates or modifies files:
  • /etc/.pwd.lock
  • /etc/passwd.717
  • /etc/group.717
  • /etc/gshadow.717
  • /etc/subuid.717
  • /etc/subgid.717
  • /etc/shadow.717
  • /var/log/faillog
  • /var/log/lastlog
  • /home/s1gna1bot/.profile
  • /home/s1gna1bot/.bash_logout
  • /home/s1gna1bot/.bashrc
  • /etc/passwd-
  • /etc/passwd+
  • /etc/shadow-
  • /etc/shadow+
  • /etc/group-
  • /etc/group+
  • /etc/gshadow-
  • /etc/gshadow+
  • /etc/subuid-
  • /etc/subuid+
  • /etc/subgid-
  • /etc/subgid+
  • /etc/nshadow
  • /etc/sudoers
Deletes files:
  • /etc/passwd.717
  • /etc/group.717
  • /etc/gshadow.717
  • /etc/subuid.717
  • /etc/subgid.717
  • /etc/shadow.717
  • /etc/shadow.lock
  • /etc/passwd.lock
  • /etc/group.lock
  • /etc/gshadow.lock
  • /etc/subuid.lock
  • /etc/subgid.lock
Changes time of creation/access/modification of files:
  • /home/s1gna1bot/.profile
  • /home/s1gna1bot/.bash_logout
  • /home/s1gna1bot/.bashrc
  • /etc/passwd-
  • /etc/shadow-
  • /etc/group-
  • /etc/gshadow-
  • /etc/subuid-
  • /etc/subgid-
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:19482
Establishes connection:
  • 8.#.8.8:53
  • 0.0.0.0:0
DNS ASK:
  • re####h-network.su�

Curing recommendations

Linux

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