Analysis by: Cris Nowell Pantanilla
ALIASES:

Sophos : Mal/TDSSPack-Z

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as a file that exports the functions of other malware/grayware. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It is a component of other malware.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: 19,440 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 13 Jan 2011

Arrival Details

This Trojan arrives as a file that exports the functions of other malware/grayware.

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

Installation

This Trojan is a component of other malware.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.766.12
VSAPI PATTERN Date: 13 Jan 2011
VSAPI PATTERN Date: 1/13/2011 12:00:00 AM

Step 1

Scan your computer with your Trend Micro product and note files detected as TROJ_AGENT.SGL

Step 2

Restart in Safe Mode

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Step 3

Search and delete the file detected as TROJ_AGENT.SGL

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Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT.SGL. 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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