TSPY_WOWSTEAL.DB
Windows 98, ME, NT, 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan deletes itself after execution.
TECHNICAL DETAILS
77,412 bytes
EXE
Yes
21 Jul 2010
Installation
This Trojan drops the following copies of itself into the affected system:
- %Windows%\Help\2ACE4CFBAF2C.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{79FC744E-75CA-49B0-8F02-AEAE4CAACBE0}
=
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
ShellExecuteHooks
79FC744E-75CA-49B0-8F02-AEAE4CAACBE0} =
Dropping Routine
This Trojan drops the following files:
- %Windows%\Help\2ACE4CFBAF2C.dll - detected as Mal_Infostl
(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
Other Details
This Trojan deletes itself after execution.
SOLUTION
8.900
7.326.03
21 Jul 2010
7/21/2010 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
Restart in Safe Mode
Step 3
Delete this registry value
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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks
- 79FC744E-75CA-49B0-8F02-AEAE4CAACBE0}=
- 79FC744E-75CA-49B0-8F02-AEAE4CAACBE0}=
Step 4
Delete this registry key
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\CLSID
- {79FC744E-75CA-49B0-8F02-AEAE4CAACBE0}
- {79FC744E-75CA-49B0-8F02-AEAE4CAACBE0}
Step 5
Search and delete these files
- %Windows%\Help\2ACE4CFBAF2C.dll
Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
Step 6
Scan your computer with your Trend Micro product to delete files detected as TSPY_WOWSTEAL.DB. 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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