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Linux.Siggen.6790

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

Virus description added: 2024-03-18

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

Linux

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