Threat Encyclopedia

SHELLSHOCK

Publish date: September 26, 2014

ALIASES:

Backdoor.Linux.Gafgyt.a (Kaspersky); Linux/DDoS.M trojan (NOD32); Exploit:Linux/CVE-2014-6271.A (F-Secure)

PLATFORM:

Unix, Linux

OVERALL RISK RATING:
DAMAGE POTENTIAL:
DISTRIBUTION POTENTIAL:
REPORTED INFECTION:
INFORMATION EXPOSURE:

  • Threat Type:Backdoor

  • Destructiveness:No

  • Encrypted:

  • In the wild: Yes

OVERVIEW


SHELLSHOCK is capable of launching distributed denial-of-service (DDoS) attacks and also it is capable to do brute force logins.It can execute the following commands on compromised system:

  • UDP - Perform UDP flooding

  • TCP - Perform TCP flooding

  • LOLNOGTFO - terminate botnet

  • KILLATTK - terminate attack thread

  • JUNK - Perform Junk Flooding

  • HOLD - Pause or delay attack for specified duration

  • GETLOCALIP - Get Local IP address

  • PING

  • SCANNER

Aside from the backdoor capability, it can gather CPU and Network Information, and also capable of check the system if is honeypot.

TECHNICAL DETAILS

Arrival Details

This backdoor may be downloaded from the following remote sites:

  • http://{BLOCKED}.{BLOCKED}.66.76/nginx

This malware arrives via the following means:

Other Details

This backdoor connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.150.154:5

NOTES:

It has the following backdoor commands/capabilities:

  • UDP - Perform UDP flooding
  • TCP - Perform TCP flooding
  • LOLNOGTFO - terminate botnet
  • KILLATTK - terminate attack thread
  • JUNK - Perform Junk Flooding
  • HOLD - Pause or delay attack for specified duration
  • GETLOCALIP - Get Local IP address
  • PING
  • SCANNER

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