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Linux.Siggen.3037

Added to the Dr.Web virus database: 2020-05-21

Virus description added:

Technical Information

Malicious functions:
Launches itself as a daemon
Substitutes application name for:
  • -bash
Replaces the following system files:
  • /bin/wget
  • /sbin/wget
Launches processes:
  • sh -c cd /bin/; cat tftp > tftp-cpy; cat /proc/716/exe > tftp ; chmod 777 tftp
  • cat tftp
  • cat /proc/716/exe
  • chmod 777 tftp
  • sh -c cd /bin/; cat rm > rm-cpy; cat /proc/716/exe > rm ; chmod 777 rm
  • cat rm
  • chmod 777 rm
  • sh -c cd /bin/; cat cd > cd-cpy; cat /proc/716/exe > cd ; chmod 777 cd
  • cat cd
  • chmod 777 cd
  • sh -c cd /bin/; cat wget > wget-cpy; cat /proc/716/exe > wget ; chmod 777 wget
  • cat wget
  • chmod 777 wget
  • sh -c cd /bin/; cat echo > echo-cpy; cat /proc/716/exe > echo ; chmod 777 echo
  • cat echo
  • chmod 777 echo
  • sh -c cd /sbin/; cat tftp > tftp-cpy; cat /proc/716/exe > tftp ; chmod 777 tftp
  • sh -c cd /sbin/; cat rm > rm-cpy; cat /proc/716/exe > rm ; chmod 777 rm
  • sh -c cd /sbin/; cat cd > cd-cpy; cat /proc/716/exe > cd ; chmod 777 cd
  • sh -c cd /sbin/; cat wget > wget-cpy; cat /proc/716/exe > wget ; chmod 777 wget
  • sh -c cd /sbin/; cat echo > echo-cpy; cat /proc/716/exe > echo ; chmod 777 echo
Performs operations with the file system:
Modifies file access rights:
  • /bin/tftp
  • /bin/rm
  • /bin/cd
  • /bin/wget
  • /bin/echo
  • /sbin/tftp
  • /sbin/rm
  • /sbin/cd
  • /sbin/wget
  • /sbin/echo
Creates or modifies files:
  • /bin/tftp-cpy
  • /bin/tftp
  • /bin/rm-cpy
  • /bin/rm
  • /bin/cd-cpy
  • /bin/cd
  • /bin/wget-cpy
  • /bin/echo-cpy
  • /bin/echo
  • /sbin/tftp-cpy
  • /sbin/tftp
  • /sbin/rm-cpy
  • /sbin/rm
  • /sbin/cd-cpy
  • /sbin/cd
  • /sbin/wget-cpy
  • /sbin/echo-cpy
  • /sbin/echo
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:6628
Establishes connection:
  • 8.#.8.8:53
Attacks using a special dictionary (brute-force technique) via the Telnet protocol.
DNS ASK:
  • sn####.cyberium.cc
Sends data to the following servers:
  • 5.###.57.212:23
  • 11#.##.101.193:23
  • 66.##.237.119:23

Curing recommendations


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