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TROJ_EXEDOT.Q

October 08, 2012
 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 may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

335,885 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

10 Nov 2009

Arrival Details

This Trojan may be dropped by other malware.

Autostart Technique

This Trojan adds the following registry entries to install itself as a Browser Helper Object (BHO):

HKEY_CLASSES_ROOT\main.BHO
(Default) = "Browser Helper Object"

HKEY_CLASSES_ROOT\main.BHO\CLSID
(Default) = "{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}"

HKEY_CLASSES_ROOT\main.BHO\CurVer
(Default) = "main.BHO.1"

HKEY_CLASSES_ROOT\main.BHO.1
(Default) = "Browser Helper Object"

HKEY_CLASSES_ROOT\main.BHO.1\CLSID
(Default) = "{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}"

HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
(Default) = "Browser Helper Object"

HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}\
InprocServer32
(Default) = "{malware path and file name}"

HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}\
TypeLib
(Default) = "{8E3C68CD-F500-4A2A-8CB9-132BB38C3573}"

HKEY_CLASSES_ROOT\TypeLib\{8E3C68CD-F500-4A2A-8CB9-132BB38C3573}\
1.0
(Default) = "mainLib"

HKEY_CLASSES_ROOT\TypeLib\{8E3C68CD-F500-4A2A-8CB9-132BB38C3573}\
1.0\0\win32
(Default) = "{malware path and file name}"

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.520.12

VSAPI PATTERN Date:

07 Oct 2010

VSAPI PATTERN Date:

10/7/2010 12:00:00 AM

FIRST VSAPI PATTERN FILE:

6.618.03

FIRST VSAPI PATTERN DATE:

10 Nov 2009

VSAPI OPR PATTERN File:

7.521.00

VSAPI OPR PATTERN Date:

07 Oct 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

Close all opened browser windows

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CLASSES_ROOT
    • main.BHO
  • In HKEY_CLASSES_ROOT
    • main.BHO.1
  • In HKEY_CLASSES_ROOT\CLSID
    • {AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
  • In HKEY_CLASSES_ROOT\TypeLib
    • {8E3C68CD-F500-4A2A-8CB9-132BB38C3573}

Step 4

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