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WORM_MORTO.SM10

October 09, 2012
 Analysis by: Rhena Inocencio
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This worm may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

11,776 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

22 Jun 2012

Arrival Details

This worm may be dropped by other malware.

NOTES:

This worm tries to open the file \\TsClient\A\Moto if it is running in rundll32.dll. If successful, it executes the bytes in the file \\TsClient\A\Moto. It then forcefully logs the user off.

If the worm is not executing in rundll32.dll, it reads the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\Wpa
md = "{random values}"

It then executes the returned {random values}.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.204.06

FIRST VSAPI PATTERN DATE:

20 Jun 2012

VSAPI OPR PATTERN File:

9.205.00

VSAPI OPR PATTERN Date:

20 Jun 2012

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

Scan your computer with your Trend Micro product and note files detected as WORM_MORTO.SM10

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as WORM_MORTO.SM10

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_MORTO.SM10. 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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