WORM_KOLAB.HY
Symantec: W32.Spybot.Worm
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Worm
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This worm deletes itself after execution.
TECHNICAL DETAILS
6,652,205 bytes
Other
Yes
05 Jan 2011
Installation
This worm drops the following copies of itself into the affected system:
- %Windows%\system\msddll.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
Autostart Technique
This worm registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\msddll
ImagePath = %Windows%\system\msddll.exe
Other System Modifications
This worm adds the following registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\msddll
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Enum\Root\LEGACY_MSDDLL
It also creates the following registry entry(ies) as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%WINDOWS%\system\msddll.exe = %WINDOWS%\system\msddll.exe:*:Microsoft Enabled
Other Details
This worm deletes itself after execution.
SOLUTION
8.900
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 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_LOCAL_MACHINE\System\CurrentControlSet\Services\msddll
- ImagePath = %Windows%\system\msddll.exe
- ImagePath = %Windows%\system\msddll.exe
Step 3
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_LOCAL_MACHINE\System\CurrentControlSet\Services\
- msddll
- msddll
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\Root\
- LEGACY_MSDDLL
- LEGACY_MSDDLL
Step 4
Scan your computer with your Trend Micro product to delete files detected as WORM_KOLAB.HY. 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.
Did this description help? Tell us how we did.