WORM_ONLINEG.EKA

It may arrive via network shares.

It searches the network for shared networks onto which it attempts to drop copies of itself.

It terminates certain processes or services if found running in the affected system's memory.

This worm uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.

As of this writing, the said sites are inaccessible.

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

Arrival Details

This worm may arrive via network shares.

Installation

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

• %Windows%\MsVM_STI.EXE
• %System%\explorer.exe

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %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.)

It uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• afasf

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
MsAudio = %Windows%\MsVM_STI.EXE

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
MsAudio = %System%\explorer.exe

The scheduled task executes the malware every:

• everyday at time of first execution

Propagation

This worm searches the network for the following shared networks onto which it attempts to drop copies of itself:

• admin$

Process Termination

This worm terminates processes or services that contain any of the following strings if found running in the affected system's memory:

• WinHex
• eXpLoRer
• WPEPRO
• VisualSniffer
• TSpyMain
• WinsockExpert
• OWL_Window
• URSoft
• PasswordGuard.exe
• Iparmor.exe
• EGHOST.EXE
• IPARMOR.EXE
• KAVPFW.EXE
• KWatchUI.EXE
• MAILMON.EXE
• Ravmon.exe
• ZoneAlarm

Download Routine

This worm accesses the following websites to download files:

• http://www.{BLOCKED}es.com/sss163/updata.html

It saves the files it downloads using the following names:

• C:\dfface.exe

As of this writing, the said sites are inaccessible.

Information Theft

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

• Legend of Mir2
• YB_OnlineClient
• zhengtu_client

Drop Points

This worm sends the information it gathers to the following email addresses:

• {BLOCKED}in@163.com