TROJ_AGENT_023760.TOMB
Trojan:Win32/Comisproc (Microsoft); Trojan.Gen (Symantec); PAK:PE_Patch.PECompact, PAK:PecBundle, PAK:PECompact, Trojan-Dropper.Win32.Demp.biv (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan.Generic.KDV.271215 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
It deletes itself after execution.
TECHNICAL DETAILS
91,154 bytes
EXE
No
08 Jul 2012
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 creates the following folders:
- %User Profile%\Application Data\44765
(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Direct3D\MostRecentApplication
HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Direct3D\MostRecentApplication
Name = "{malware file name}"
HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia
Path = "%User Profile%\Application Data\44765"
Dropping Routine
This Trojan drops the following files:
- %User Temp%\Macromedia_config.tmp
- %User Profile%\44765\add.dat
- %System%\d3d9caps.dat
(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.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %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.)
Other Details
This Trojan deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Direct3D
- MostRecentApplication
- In HKEY_LOCAL_MACHINE\SOFTWARE
- Macromedia
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Direct3D\MostRecentApplication
- Name = "{malware file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia
- Path = "%User Profile%\Application Data\44765"
Step 4
Search and delete these files
- %User Temp%\Macromedia_config.tmp
- %User Profile%\44765\add.dat
- %System%\d3d9caps.dat
Step 5
Search and delete this folder
- %User Profile%\Application Data\44765
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT_023760.TOMB. 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.
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