Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 164,152 bytes
File Type: PE
Memory Resident: No
Initial Samples Received Date: 04 Dec 2010

Dropping Routine

This Trojan drops the following files:

It executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

Other Details

This Trojan deletes itself after execution.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.675.00
VSAPI PATTERN Date: 04 Dec 2010
VSAPI PATTERN Date: 12/4/2010 12:00:00 AM
FIRST VSAPI PATTERN FILE: 7.674.10
FIRST VSAPI PATTERN DATE: 04 Dec 2010

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

Remove malware files dropped/downloaded by TROJ_PASTA.AB

     TROJ_AGENT.AWFB

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_PASTA.AB. 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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