TSPY_ONLINEG.NKR

October 09, 2012
 Analysis by: Christopher Daniel So
 ALIASES:

PWS:Win32/OnLineGames.KQ (Microsoft), Trojan.Gampass.E (Symantec), PWS-Mmorpg!bbt (McAfee)

 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:

Dropped by other malware, Downloaded from the Internet

This spyware steals particular information and sends it to certain URLs via HTTP POST. It terminates itself if it finds certain processes in the affected system's memory.

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.

  TECHNICAL DETAILS

File Size:

76,288 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

07 Jul 2012

Payload:

Connects to URLs/IPs, Steals information, Terminates processes

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 terminates itself if it finds the following processes in the affected system's memory:

  • ALYac.aye
  • AYAgent.aye
  • AYServiceNT.aye
  • NaverAgent.exe
  • Nsavsvc.npc
  • NSVMON.NPC
  • nvc.npc
  • nvcagent.npc
  • pcotp.exe
  • SkyMon.exe
  • SystemMon.exe

Information Theft

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

  • AION GameClient (AION.bin)
  • Diablo III (Diablo III.exe)
  • Dragon Knights (dkonline.exe)
  • Dungeon & Fighter (dnf.exe)
  • FIFA Online (ff2client.exe)
  • Heroes of the Pacific (heroes.exe)
  • MapleStory (MapleStory.exe)
  • Ncsoft Lineage (lin.bin)
  • Rohan Online Game (fairyclient.exe)
  • The Exiled Realm of Arborea (TERA.exe, ExLauncher.exe)
  • Tibia Player (OTP.exe)
  • World of Warcraft (wow.exe)

Stolen Information

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

  • http://{BLOCKED}z.info/qaz/an3/post.asp
  • http://{BLOCKED}z.info/qaz/an3otp/post.asp
  • http://{BLOCKEDE}z.info/qaz/dk/post.asp
  • http://{BLOCKED}z.info/qaz/dnf/post.asp
  • http://{BLOCKED}z.info/qaz/dnfotp/post.asp
  • http://{BLOCKED}z.info/qaz/hg/post.asp
  • http://{BLOCKED}z.info/qaz/luoqi/post.asp
  • http://{BLOCKED}z.info/qaz/mxd/post.asp
  • http://{BLOCKED}z.info/qaz/mxdotp/post.asp
  • http://{BLOCKED}z.info/qaz/net/post.asp
  • http://{BLOCKED}z.info/qaz/pm/post.asp
  • http://{BLOCKED}z.info/qaz/tera/post.asp
  • http://{BLOCKED}z.info/qaz/tian1/post.asp
  • http://{BLOCKED}uccww.com/666cash/post.asp
  • http://{BLOCKED}uccww.com/666lq/post.asp
  • http://{BLOCKED}uccww.com/666wowow/post.asp
  • http://{BLOCKED}uccww.com/666woyh/post.asp
  • http://{BLOCKED}z.info/qaz/dnfotp/post.asp

NOTES:

It terminates the process where it is running if the process name is one of the following:

  • AYAgent.aye
  • AYRTSrv.aye
  • AYServiceNT.aye
  • AYUpdSrv.aye
  • InjectWinSockServiceV3.exe
  • Nsavsvc.npc
  • nsvmon.npc
  • nvc.npc
  • nvcagent.npc
  • sgrun.exe
  • SgSvc.exe
  • SkyMon.exe
  • SystyemMon.exe
  • V3Light.exe
  • V3LSvc.exe
  • V3LTray.exe

It also terminates the process where it is running if the current directory has the string alyac.

This spyware is normally dropped as %System%\ws2help.dll, with the original %System%\ws2help.dll renamed to %System%\ws2helpxp.dll by the dropper.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.242.06

FIRST VSAPI PATTERN DATE:

08 Jul 2012

VSAPI OPR PATTERN File:

9.243.00

VSAPI OPR PATTERN Date:

08 Jul 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.NKR

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_ONLINEG.NKR. 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 5

Restoring a File to its Original Location

  1. Click Start>Run.
  2. In the text box, type the following:
    command /c copy  %System%\ws2helpxp.dll %System%\ws2help.dll
  3. Press Enter.


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