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Linux.Siggen.6887

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

Virus description added: 2024-04-01

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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