TROJ_BEHAV.C

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:

• %System%\{926A036A-1
• %System Root%\pagefile.pif

(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.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other System Modifications

This Trojan deletes the following files:

• %Program Files%\Rising\AntiSpyware\runiep.exe

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

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
DownloadManager

It adds the following registry entries:

HKEY_LOCAL_MACHINE
9-D148B0369C24} = "%System%\{926A036A-1"

Dropping Routine

This Trojan drops the following files:

• %Program Files%\autorun.inf
• %Windows%\Deleteme.bat
• %System%\unlmon.dll
• %System Root%\autorun.inf

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}.75.171/w.jpg

This report is generated via an automated analysis system.