Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /etc/init.d/linux_kill
- /etc/profile.d/bash_config.sh
- /etc/profile.d/bash_config
- /etc/crontab
- /etc/init.d/ssh
- /etc/profile.d/linux.sh
Malicious functions:
Substitutes application name for:
- ksoftirqd/0
Replaces the following system files:
- /usr/bin/ps
- /usr/bin/ss
- /usr/bin/lsof
Manages services:
- ['systemctl', 'list-unit-files', '--full', '--type=socket']
- ['systemctl', 'daemon-reload']
- ['systemctl', 'enable', 'linux.service']
- ['systemctl', 'start', 'linux.service']
- ['systemctl', 'start', 'cron.service']
- ['systemctl', 'start', 'crond.service']
Launches processes:
- /bin/sh /usr/sbin/service crond start
- bash -c echo \x22*/1 * * * * root /.img \x22 >> /etc/crontab
- mount -o bind /tmp/ /proc/517
- journalctl -xe --no-pager
- sleep 60
- /bin/sh /usr/sbin/service cron start
- /bin/sh /etc/32678
- <SAMPLE_FULL_PATH> \x0a
- renice -20 517
- sed -ne s/\x5c.socket\x5cs*[a-z]*\x5cs*$/.socket/p
- bash -c cd /boot;systemctl daemon-reload;systemctl enable linux.service;systemctl start linux.service;journalctl -xe --no-pager
- bash -c cd /boot;ausearch -c \x27System.img.conf\x27 --raw | audit2allow -M my-Systemimgconf;semodule -X 300 -i my-Systemimgconf.pp
- /usr/bin/perl /usr/sbin/update-rc.d linux_kill defaults
- basename /usr/sbin/service
Performs operations with the file system:
Modifies file access rights:
- /etc/id.services.conf
- /etc/32678
- /boot/System.img.config
- /etc/profile.d/bash_config
- /usr/lib/libdlrpcld.so
- /usr/lib/system-monitor
- /usr/bin/ps
- /usr/bin/ss
- /usr/bin/ls
- /usr/bin/dir
- /usr/bin/find
- /usr/bin/lsof
Creates folders:
- /usr/bin/lib
Creates or modifies files:
- /etc/id.services.conf
- /etc/32678
- /dev/.old
- /dev/.img
- /dev/watchdog
- /dev/misc/watchdog
- /boot/System.img.config
- /usr/lib/systemd/system/linux.service
- /usr/lib/libdlrpcld.so
- /.img
- /usr/lib/system-monitor
- /usr/bin/ps
- /usr/bin/ss
- /usr/bin/ls
- /usr/bin/dir
- /usr/bin/find
- /usr/bin/lsof
Locks files:
- /dev/.img
Mounts file systems:
- /tmp
Changes time of creation/access/modification of files:
- /etc/id.services.conf
- /boot/System.img.config
- /etc/profile.d/bash_config
- /usr/lib/libdlrpcld.so
- /lib/system-monitor
- /etc/init.d/ssh
- <SAMPLE_FULL_PATH>
- /usr/bin/ps
- /usr/bin/ss
- /usr/bin/ls
- /usr/bin/dir
- /usr/bin/find
- /usr/bin/lsof
Network activity:
Establishes connection:
- <LOCAL_DNS_SERVER>
- 8.#.8.8:53
DNS ASK:
- ww#.#oogle.com
- l.##m2.com
- y.##m2.com