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Threat Encyclopedia

TSPY_ONLINEG.OMU

ANALYSIS BY

Adrian Cofreros


ALIASES:

PWS:Win32/OnLineGames.LH(Microsoft),Rootkit.Win32.Agent.dhtd(Kaspersky),a variant of Win32/PSW.OnLineGames.QBV trojan(NOD32)

PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type:Spyware

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


This malware was found to be hosted on certain compromised South Korean websites. Aside from stealing credentials from specific online games, it also downloads a backdoor detected as BKDR_TENPEQ.SM.

To get a one-glance comprehensive view of the behavior of this Spyware, refer to the Threat Diagram shown below.

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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

It requires its main component to successfully perform its intended routine.

TECHNICAL DETAILS

File Size:

86,016 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

25 Jul 2013

Payload:

Terminates processes, Downloads files, Drops files

Arrival Details

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This spyware drops the following component file(s):

  • %Windows%\setupball.bmp - encrypted dll file(detected as TSPY_ONLINEG.OMU when decrypted)
  • %Windows%\version.dat
  • %Windows%\wintmp.dat
  • %Windows%\winurl.dat
  • %User Temp%\del{random}.bat - deletes the initiial copy of the malware, deletes the batch file itself, and renames an existing olesau32.dll(malware copy)

(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

It injects codes into the following process(es):

  • explorer.exe

Process Termination

This spyware terminates the following processes if found running in the affected system's memory:

  • V3LTray.exe
  • V3LSvc.exe
  • V3Light.exe
  • V3LRun.exe

Dropping Routine

This spyware drops the following files wherein it saves the information it gathers:

  • d3d8d{number}.ini

Download Routine

This spyware connects to the following URL(s) to download its component file(s):

  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120547.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120546.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120545.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120544.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120543.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120542.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120541.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120540.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120539.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120538.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120537.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120536.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120535.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120534.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120533.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120532.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120531.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120530.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120529.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120528.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120527.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120526.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120525.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120524.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120523.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120522.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120521.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120520.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120519.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120518.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120516.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120515.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120514.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120513.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120512.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120511.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120510.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120509.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120508.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120507.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120506.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120505.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120504.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120503.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120502.gif
  • http://www.{blocked}r.{blocked}o.kr/bbs2/data/event/120501.gif

Trend Micro detects the dowloaded file as:

  • BKDR_TENPEQ.SM

Information Theft

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

  • DKonline.exe
  • DuelPoker.exe
  • PMClient.exe
  • NMWizard24.exe
  • heroes.exe
  • Poker.exe
  • HgSel.exe
  • NGM.exe
  • ArcheAge.exe
  • fifazf.exe
  • client.exe
  • KRITIKA_Client.exe

Stolen Information

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

  • www.{BLOCKED}la.com/up/otp.asp

Other Details

This spyware requires its main component to successfully perform its intended routine.

SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.180.04

FIRST VSAPI PATTERN DATE:

25 Jul 2013

VSAPI OPR PATTERN File:

10.181.00

VSAPI OPR PATTERN Date:

28 Jul 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product and note files detected as TSPY_ONLINEG.OMU

Step 3

Remove malware/grayware files dropped/downloaded by TSPY_ONLINEG.OMU

Step 4

Identify and delete files detected as TSPY_ONLINEG.OMU using the Recovery Console

[ Learn More ]

Step 5

Search and delete these files

[ Learn More ]
There may be some 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.
  • %Windows%\setupball.bmp
  • %Windows%\version.dat
  • %Windows%\wintmp.dat
  • %Windows%\winurl.dat
  • d3d8d{number}.ini

Step 6

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