TROJ_OLGAME.ITW

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

Arrival Details

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

• %Program Files%\Common Files\sfbsbvy\coiome.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

It creates the following folders:

• %Program Files%\Common Files\sfbsbvy

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Autostart Technique

This Trojan modifies the following registry entries to ensure it automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Shell = "Explorer.exe"

(Note: The default value data of the said registry entry is Explorer.exe.)

Other System Modifications

This Trojan deletes the following files:

• %Program Files%\Common Files\sfbsbvy\coiome.exe
• %Program Files%\YFC.hta
• %System%\tccj.dll
• %Windows%\QQSAFER.EXE
• %Program Files%\common files\Microsoft Shared\MSInfo\iejore.exe
• %Windows%\Qedie\conime.exe
• %Windows%\°Ù¶ÈÒ»ÏÂ.url
• %Desktop%\°Ù¶ÈÒ»ÏÂ.url
• %Desktop%\hao123.url
• %Desktop%\360°²È«ä¯ÀÀÆ÷.lnk
• %Windows%\ModFan\mone.dll
• %Windows%\UoDo\game.dll
• \w3wp.exe
• \pagefile.exe
• \vdswho.dll
• \vdswho.nls
• %System Root%\autorun.inf
• d:\autorun.inf
• e:\autorun.inf
• f:\autorun.inf
• %System Root%\w3wp.exe
• d:\w3wp.exe
• e:\w3wp.exe
• f:\w3wp.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Dropping Routine

This Trojan drops the following files:

• %Program Files%\GHO.hta
• %Desktop%\2345ÍøÖ·µ¼º½.url

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://t.{BLOCKED}0.com/b.jpg

This report is generated via an automated analysis system.