Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This spyware may be dropped by other malware.

It steals sensitive information such as user names and passwords related to certain games.

  TECHNICAL DETAILS

File Size: 88,576 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 27 Oct 2010

Arrival Details

This spyware may be dropped by the following malware:

Information Theft

This spyware steals sensitive information such as user names and passwords related to the following games:

  • Arad Hangame
  • Atlantica
  • Cabal
  • Forthgoer
  • GungHo
  • MapleStory
  • PlayOnline
  • Ragnarok
  • Red Stone
  • Tales Weaver

Stolen Information

This spyware sends the gathered information via HTTP POST to the following URL:

  • http://{BLOCKED}ef8t.com/r1b/rty/lin.asp
  • http://{BLOCKED}ef8t.com/r1b/rjt/lin.asp

Other Details

This spyware does the following:

  • Checks if the following processes related to antivirus are running in memory:
    • ALUSCHEDULERSVC.EXE
    • ASHDISP.EXE
    • AVGNT.EXE
    • AVGRSX.EXE
    • AVP.EXE
    • AYAGENT.AYE
    • CCSVCHST.EXE
    • EKRN.EXE
    • LIVESRV.EXE
    • UFSEAGNT.EXE
    • VCRMON.EXE
    • VSTSKMGR.EXE
  • It retrieves the folder where the said files are located. It will then search for any of the following component files, depending on the antivirus process it finds:
    • AYUpdate.aye
    • SfFnUp.exe
    • UfUpdUi.exe
    • Update.exe
    • avast.setup
    • avgupd.exe
    • eguiEmon.dll
    • eguiEpfw.dll
    • ekrnEmon.dll
    • ekrnEpfw.dll
    • luall.exe
    • mcupdate.exe
    • preupd.exe
    • prupdate.ppl
    • setup.ovr
    • update.exe
    • updater.dll
    • vsupdate.dll
  • Searches files from the said folder with the following extensions:
    • .DLL
    • .EXE
  • This spyware also moves the files it has found in %System Root% and replaces the file name with {file name}.{extension}.vcd.
  • This spyware steals login credentials for Yahoo! Japan.

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.572.07
VSAPI PATTERN Date: 27 Oct 2010
VSAPI PATTERN Date: 10/27/2010 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

Remove malware files dropped/downloaded by TSPY_GAMETHI.AB

Step 3

Scan your computer with your Trend Micro product and note files detected as TSPY_GAMETHI.AB

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete the file detected as TSPY_GAMETHI.AB

[ 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.

Step 6

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