PTCH_NOPUC.A

October 09, 2012

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 Analysis by: Roland Marco Dela Paz

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 ALIASES:

Trojan.Win32.Patched.nl (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:

 DAMAGE POTENTIAL:

 DISTRIBUTION POTENTIAL:

 REPORTED INFECTION:

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

  OVERVIEW

This is the Trend Micro detection for files that exhibit certain behaviors.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Mar 2012

Other Details

This is the Trend Micro detection for:

• the legitimate Microsoft file, netstat.exe , whose code has been altered by the malware TROJ_SAVIT.A as an autostart technique.

NOTES:

Upon execution, it runs the following malicious file:

• %Application Data%\IECheck.exe

As a result, malicious routines of the executed file are also exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.820.01

FIRST VSAPI PATTERN DATE:

06 Mar 2012

VSAPI OPR PATTERN File:

8.821.00

VSAPI OPR PATTERN Date:

07 Mar 2012

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 PTCH_NOPUC.A

• TROJ_SAVIT.A

Step 3

Scan your computer with your Trend Micro product to clean files detected as PTCH_NOPUC.A. 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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Related Malware

• TROJ_SAVIT.A