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PE_PATCHED.AADL

October 09, 2012
 Analysis by: Kathleen Notario
 Modified by: Christopher Daniel So
 ALIASES:

Virus:Win32/Mesoum.D (Microsoft), W32/Patcher (McAfee), W32.Grenail.B!inf (Symantec), Trojan.Win32.Patched.dt (Kaspersky)

 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 is the Trend Micro detection for patched .DLL files that have been modified by another malware to automatically load the other malware when the file infected with this malware is loaded.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

03 Aug 2010

NOTES:
This is the Trend Micro detection for patched .DLL files that have been modified by another malware to automatically load the other malware when the file infected with this malware is loaded.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

7.376.12

FIRST VSAPI PATTERN DATE:

11 Aug 2010

VSAPI OPR PATTERN File:

7.377.00

VSAPI OPR PATTERN Date:

12 Aug 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

Scan your computer with your Trend Micro product to clean files detected as PE_PATCHED.AADL. 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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