Analysis by: Christopher Daniel So
ALIASES:

Backdoor.Trojan (Symantec)

 PLATFORM:

Linux, UNIX, Mac OS X

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 2,218 bytes
File Type: Script
Memory Resident: Yes
Initial Samples Received Date: 30 Sep 2014
Payload: Connects to URLs/IPs

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

NOTES:

It connects to {BLOCKED}2.{BLOCKED}7.37.182:23 and starts a remote shell (/bin/bash).

  SOLUTION

Minimum Scan Engine: 9.700

Restart in normal mode and scan your computer with your Trend Micro product for files detected as PERL_SHELLDOOR.B. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


Did this description help? Tell us how we did.