PHP_SHELL.SM

October 08, 2012

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 ALIASES:

PHP/Shellbot.6603 (AntiVir); Trojan Horse PERL/ShellBot.B (AVG); Backdoor.PHP.ALZ (Ikarus)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:

 DAMAGE POTENTIAL:

 DISTRIBUTION POTENTIAL:

 REPORTED INFECTION:

• 
  Threat Type: Backdoor
• 
  Destructiveness: No
• 
  Encrypted: No
• 
  In the wild: Yes

  OVERVIEW

This is the Trend Micro detection for files that execute malicious routines.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Script

Memory Resident:

No

Initial Samples Received Date:

15 Nov 2010

NOTES:

Other Details

This is the Trend Micro detection for:

PHP scripts in compromised Web servers that wait for a connection from a remote host. Backdoor commands are passed as parameters to HTTP requests.

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.796.18

VSAPI PATTERN Date:

28 Jan 2011

VSAPI PATTERN Date:

1/28/2011 12:00:00 AM

FIRST VSAPI PATTERN FILE:

7.634.10

FIRST VSAPI PATTERN DATE:

19 Nov 2010

VSAPI OPR PATTERN File:

7.797.00

VSAPI OPR PATTERN Date:

28 Jan 2011

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as PHP_SHELL.SM. 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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