TROJ_ADLOAD.SE

October 28, 2010
 ALIASES:

Trojan-Downloader.Win32.Adload.fu (Kaspersky), Generic Downloader.z (McAfee), Downloader (Symantec), TR/Dldr.Adload.FU.573 (Avira), Mal/Emogen-B (Sophos),

 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type:

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan accesses websites to download files. This action allows this malware to possibly add other malware on the affected computer.



  TECHNICAL DETAILS

File Size:

230400 bytes

Memory Resident:

Yes

Initial Samples Received Date:

30 Dec 2009


Installation


This Trojan drops the following copies of itself into the affected system:

  • %Program Files%\pongo\pongo.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)



Other System Modifications


This Trojan adds the following registry keys:

HKEY_CURRENT_USER\SOFTWARE\pongo
installday = "20091208"



Download Routine


This Trojan accesses websites to download the following files:

  • %Program Files%\pongo\cfg.dat

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)



Other Details


This Trojan attempts to access the following Web sites to download files, which are possibly malicious:

  • http://{BLOCKED}ntgo.co.kr/pongo/cfg.dat


  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

4.553.00

VSAPI OPR PATTERN Date:

27 Jan 2007


Step 1


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_CURRENT_USER\SOFTWARE\pongo
    • installday = 20091208


Step 2


Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Program Files%\pongo\cfg.dat
  • %Program Files%\pongo\pongo.exe



Step 3


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