TROJ_JORIK.DZK

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.

Other System Modifications

This Trojan deletes the following files:

• %User Temp%\na-bfh4y.pdb
• %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.212.36328
• %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.212.36343
• %User Profile%\v2.0.50727.42\security.config.cch.212.36531
• %User Temp%\n6ReaW5GMa.ini
• %User Profile%\Application Data\252356.pdb
• %User Temp%\vbc1.tmp
• %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.1724.57390
• %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.1724.57406
• %User Profile%\v2.0.50727.42\security.config.cch.1724.57562

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %Windows% is the Windows folder, which is usually C:\Windows.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Dropping Routine

This Trojan drops the following files:

• %User Profile%\Application Data\system32.exe
• %User Temp%\na-bfh4y.tmp
• %User Temp%\na-bfh4y.0.vb
• %User Temp%\na-bfh4y.cmdline
• %User Temp%\na-bfh4y.out
• %User Temp%\na-bfh4y.err
• %User Profile%\Application Data\252356.exe
• %User Temp%\PigVajIxdW.ini
• %User Temp%\RES2.tmp
• %User Startup%\{malware file name}

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

This report is generated via an automated analysis system.