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Linux.Siggen.5802

Aggiunto al database dei virus Dr.Web: 2023-10-09

La descrizione è stata aggiunta: 2023-10-09

Technical Information

To ensure autorun and distribution:

Creates or modifies the following files:

Creates or modifies the following symlinks:

/etc/rc2.d/S01dns-udp4
/etc/rc3.d/S01dns-udp4
/etc/rc4.d/S01dns-udp4
/etc/rc5.d/S01dns-udp4

Malicious functions:

Launches itself as a daemon

Manages services:

['systemctl', 'daemon-reload']
['systemctl', 'list-unit-files', '--full', '--type=socket']
['systemctl', '-p', 'Triggers', 'show', 'dbus.socket']
['systemctl', '-p', 'Triggers', 'show', 'ssh.socket']
['systemctl', '-p', 'Triggers', 'show', 'syslog.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-initctl.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-journald-dev-log.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-journald.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-shutdownd.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-udevd-control.socket']
['systemctl', '-p', 'Triggers', 'show', 'systemd-udevd-kernel.socket']
['systemctl', 'start', 'cron.service']
['systemctl', 'start', 'crond.service']

Launches processes:

<SAMPLE_FULL_PATH> \x0a
sed -ne s/\x5c.socket\x5cs*[a-z]*\x5cs*$/.socket/p
/usr/bin/perl /usr/sbin/update-rc.d dns-udp4 defaults
/bin/sh /usr/sbin/service cron start
/sbin/insserv dns-udp4
mount -o bind /tmp/ /proc/821
/bin/bash -c echo \x22*/1 * * * * root /.mod \x22 >> /etc/crontab
basename /usr/sbin/service

Performs operations with the file system:

Modifies file access rights:

/etc/rc.local
/usr/sbin/netstat.cfg
/boot/system.pub
/etc/profile.d/bash.cfg
/usr/lib/libgdi.so.0.8.2
/lib/system.mark

Creates or modifies files:

/etc/.ffff4444
/etc/.cfg
/usr/sbin/netstat.cfg
/boot/system.pub
/usr/lib/libgdi.so.0.8.2
/.mod
/lib/system.mark
/run/mount/utab
/dev/watchdog
/dev/misc/watchdog

Deletes files:

/etc/.ffff4444

Mounts file systems:

/tmp

Changes time of creation/access/modification of files:

Network activity:

Establishes connection:

<LOCAL_DNS_SERVER>
8.#.8.8:53
15#.##.85.42:9528
15#.##.85.42:65000

Sends data to the following servers:

<LOCAL_DNS_SERVER>
8.#.8.8:53
15#.##.85.42:9528
15#.##.85.42:65000

Receives data from the following servers:

<LOCAL_DNS_SERVER>
8.#.8.8:53
15#.##.85.42:9528

Other:

Collects RAM information

Curing recommendations

Linux

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