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TROJ_SHIZ.AB

October 08, 2012
 Analysis by: Roland Marco Dela Paz
 ALIASES:

Symantec : Trojan.Bamital.B!inf ; Sophos : Troj/Patched-Y

 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


  TECHNICAL DETAILS

File Size:

1,033,728 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

01 Aug 2012

Other Details

This Trojan does the following:

  • It is a trojanized EXPLORER.EXE file modified by a malware detected by Trend Micro as TROJ_BAMITAL.QUE. It serves as an autostart file by loading the following DLL everytime it executes:
    • %System%\nt.dll - detected by Trend Micro as BKDR_SHIZ.AB

    As a result, malicious routines of the loaded malware are exhibited on the affected system.

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.780.01

VSAPI PATTERN Date:

01 Aug 2012

VSAPI PATTERN Date:

8/1/2012 12:00:00 AM

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_SHIZ.AB

Step 3

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