Analysis by: Adrian Cofreros
ALIASES:

PHP.Backdoor.Trojan(Norton),PHP/IRCBOT.FP(Antivir)

 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor may be dropped by other malware. It may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

File Size: Varies
File Type: Script
Initial Samples Received Date: 25 Aug 2014

Arrival Details

This backdoor may be dropped by other malware.

It may be hosted on a website and run when a user accesses the said website.

Other Details

This backdoor connects to the following possibly malicious URL:

  • irc.{BLOCKED}et.net:6667

It does the following:

  • TCP flood
  • Send an Email
  • Download file
  • Execute Shell Command
  • Get System information
  • UDP flood
  • Port scan

NOTES:

This malware uses Internet Relay Chat (IRC) connection to control remotely the affected machine.

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 7.954.14
FIRST VSAPI PATTERN DATE: 06 Apr 2011
VSAPI OPR PATTERN File: 7.955.00
VSAPI OPR PATTERN Date: 07 Apr 2011

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as PHP_PBOT.SMD. 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.


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