Analysis by: Abraham Latimer Camba
ALIASES:

PWS:Win32/OnLineGames.LH (Microsoft), probably a variant of Win32/PSW.OnLineGames.PYU trojan (ESET), W32/Onlinegames.PYU!tr (Fortinet), Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 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 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: 46,080 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 08 Aug 2012
Payload: Connects to URLs/IPs, Steals information

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 is injected into the following processes running in memory:

  • chrome.exe
  • explorer.exe
  • firefox.exe
  • iexplore.exe

Dropping Routine

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

  • %System%\d3d8d{number}.ini

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Information Theft

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

  • Diablo III.exe
  • DKOnline.exe
  • dnf.exe
  • DuelPoker.exe
  • FF2Client.exe
  • Lin.bin
  • MapleStory.exe
  • NeopleLauncher.exe
  • NMWizard24.exe
  • PMangUpdater.exe
  • PMClient.exe
  • raycity.exe
  • wow.exe

Stolen Information

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

  • http://www.{BLOCKED}s.com/up/board.asp
  • http://www.{BLOCKED}s.com/up/otp.asp
  • http://www.{BLOCKED}ar.co.kr/bbs/view_info1.php
  • http://www.{BLOCKED}se.com/up/board.asp
  • http://www.{BLOCKED}se.com/up/otp.asp

Other Details

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

NOTES:

This spyware is usually dropped as %System\ws2help.dll. A legitimate ws2help.dll exists in the said folder, thus it is replaced by this spyware.

It monitors the Internet Browser of an affected system in order to steal credentials from the following sites:

  • bns.plaync.com
  • df.nexon.com
  • hangame.com
  • lineage.plaync.co.kr
  • maplestory.nexon.com
  • pmang.com
  • poker.hangame.com
  • tera.hangame.com
  • www.daum.net
  • http://admin.halfclub.com/Login/Login.aspx
  • http://admin.hani.co.kr/
  • http://admin.heraldm.com:8081/Admin?method=login
  • http://admin.imnews.imbc.com/login.jsp
  • http://admin.imnews.imbc.com/login.jsp
  • http://admin.t-ad.co.kr/
  • http://admin.t-ad.co.kr/loginPage.do
  • http://admin123.xportsnews.hankyung.com
  • http://adminkt001.olleh.com/
  • http://adsrv1.dt.co.kr/banner/banner/Login.html
  • http://adsrv2.dt.co.kr/banner/banner/Login.html
  • http://adw.heraldm.com/
  • http://bts1.nhncorp.com/nhnbts/login.jsp
  • http://ciis.chosun.com
  • http://cms.danawa.com/session/login.php
  • http://cms.newsis.com/
  • http://condoadmin.auction.co.kr/Manage/Login.aspx
  • http://desk.kukinews.com/web_desk/login/login.asp
  • http://eip.chosun.com/nanum/flow/admin/
  • http://erp.sbs.co.kr/erp/
  • http://erpap1.kbs.co.kr:8001
  • http://hantoma.hani.co.kr/
  • http://hkms.hankyung.com/
  • http://homehub.olleh.com/cgi-bin/login_cgi
  • http://homehub.olleh.com/cgi-bin/login_cgi
  • http://iims2.nhncorp.com/adminPM/Login.nhn
  • http://inato2.chosun.com
  • http://khcms.khan.co.kr
  • http://log.heraldm.com/login/loginForm.tsp
  • http://m.sportsseoul.com/admin/toto/login/login.jsp
  • http://m.sportsseoul.com/admin/toto/login/login.jsp
  • http://mail.ajnews.co.kr/
  • http://mail.asiae.co.kr/
  • http://mail.chosun.com/cgi-bin/index.cgi
  • http://mail.freechal.com/Mail/FWAccRepair.asp
  • http://mail.khan.co.kr
  • http://mail.korail.com/index.jsp
  • http://mail.m2games.kr/
  • http://mail.newsis.com/
  • http://mail.nhncorp.com/login
  • http://martini.npicsoft.com
  • http://mis.ytn.co.kr/subtop/login.asp
  • http://ncc.kbs.co.kr
  • http://newmail.chosun.com
  • http://newsys.ytn.co.kr/
  • http://ot.ytn.co.kr/FrmLogin.aspx
  • http://pdfadmin.kukinews.com/kmib/login/login.asp
  • http://pims.freechal.com/
  • http://radiotest.kbs.co.kr/admin/radiolg.php
  • http://rms.mgamecorp.com/index.php
  • http://rms.mgamecorp.com/index.php
  • http://s.biz.daum.net/adminform.daum
  • http://scm.halfclub.com/
  • http://shop.golf.sbs.co.kr/scmadmin/login.php
  • http://sponevt.hangame.com/
  • http://start.khan.co.kr
  • http://tkadmin.yes24.com/manage/login.aspx
  • http://webadmin.hankyung.com/
  • http://webmail.mt.co.kr/
  • http://webmail.mt.co.kr/
  • http://www.cbs.co.kr/cbsboard/2006/admin/
  • http://www.hankyung.com/dic/admin/login.php
  • https://121.159.80.2:50005/index.php
  • https://192.168.3.1:50005/index.php
  • https://210.179.198.226:50005/index.php
  • https://211.180.150.146/index.cgi
  • https://220.123.212.113:50005/
  • https://eiims2.nhncorp.com/adminPM/Login.nhn
  • https://hrlove.nhncorp.com/sso/login.jsp
  • https://neoin.neowiz.com/member/login.nwz
  • https://neoin.neowiz.com/member/login.nwz
  • https://nsec.nhncorp.com/
  • https://partneradmin.ezwel.com/cpadm/login/loginForm.ez
  • https://remote.korail.com/web/login.jsp
  • https://scoop.chosun.com/
  • https://www.cbs.co.kr/newadmin/login.aspx
  • https://xmail.npicsoft.com

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.310.04
FIRST VSAPI PATTERN DATE: 08 Aug 2012
VSAPI OPR PATTERN File: 9.311.00
VSAPI OPR PATTERN Date: 09 Aug 2012

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

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

Step 3

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

[ Learn More ]

Step 4

Search and delete this file

[ 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.
  • %System%\d3d8d{number}.ini

Step 5

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

Step 6

Restore these deleted files from backup

*Note: Only Microsoft-related keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

 
  • %System%\ws2help.dll


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