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Linux.Siggen.6790

Added to the Dr.Web virus database: 2024-03-18

Virus description added:

Technical Information

Malicious functions:
Launches itself as a daemon
Substitutes application name for:
  • /bin/bash
Launches processes:
  • echo \x22Signalbot:ufobotz1337\x22 | chpasswd
  • chpasswd
  • history -c
  • ftp -n
  • useradd -m Signalbot
Performs operations with the file system:
Modifies file access rights:
  • /home/Signalbot
  • /home/Signalbot/.profile
  • /home/Signalbot/.bash_logout
  • /home/Signalbot/.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/Signalbot
  • /home/Signalbot/.profile
  • /home/Signalbot/.bash_logout
  • /home/Signalbot/.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/Signalbot
Creates symlinks:
  • /etc/passwd.lock
  • /etc/group.lock
  • /etc/gshadow.lock
  • /etc/subuid.lock
  • /etc/subgid.lock
  • /etc/shadow.lock
Creates or modifies files:
  • /self
  • /proc/716/cmdline
  • /etc/.pwd.lock
  • /etc/passwd.718
  • /etc/group.718
  • /etc/gshadow.718
  • /etc/subuid.718
  • /etc/subgid.718
  • /etc/shadow.718
  • /var/log/faillog
  • /var/log/lastlog
  • /home/Signalbot/.profile
  • /home/Signalbot/.bash_logout
  • /home/Signalbot/.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
  • /ip_addresses.txt
Deletes files:
  • /etc/passwd.718
  • /etc/group.718
  • /etc/gshadow.718
  • /etc/subuid.718
  • /etc/subgid.718
  • /etc/shadow.718
  • /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/Signalbot/.profile
  • /home/Signalbot/.bash_logout
  • /home/Signalbot/.bashrc
  • /etc/passwd-
  • /etc/shadow-
  • /etc/group-
  • /etc/gshadow-
  • /etc/subuid-
  • /etc/subgid-
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:8345
Establishes connection:
  • 8.#.8.8:53

Curing recommendations


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