Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  TECHNICAL DETAILS

File Size: 72,309 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 30 Sep 2010

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CLASSES_ROOT
(default) = {malware path and filename}

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID\{8D79D9C6-D210-476A-82B7-5D9113A40CE3}

HKEY_CURRENT_USER\Software\Tencent

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
ShellExecuteHooks
{8D79D9C6-D210-476A-82B7-5D9113A40CE3} =

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.504.03
VSAPI PATTERN Date: 30 Sep 2010
VSAPI PATTERN Date: 9/30/2010 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

Identifying the Grayware Files

Download the latest spyware pattern file and scan your computer. Note the path and file name of all files detected as TSPY_QQPASS.APO.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

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\CLSID
    • {8D79D9C6-D210-476A-82B7-5D9113A40CE3}
  • In HKEY_CURRENT_USER\Software
    • Tencent

Step 5

Delete this registry value

[ 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks
    • {8D79D9C6-D210-476A-82B7-5D9113A40CE3}=

Step 6

Search and delete the file detected as TSPY_QQPASS.APO

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.


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