WORM_MORTO.SMB
Worm:Win32/Morto.J (Microsoft); W32/Morto.P!tr (Fortinet); W32/Morto.dll.e (McAfee); Mal/Morto-A (Sophos); a variant of Win32/Morto.Q worm (ESET-NOD32); W32.Morto!gen2 (Symantec); Worm.Win32.Morto.ab (v) (Sunbelt); W32/Morto.F.gen!Eldorado (generic, not disinfectable) (F-Prot); Worm.Win32.Morto (Ikarus);
Windows
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
Arrival Details
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other Details
This worm requires its main component to successfully perform its intended routine.
NOTES:
This worm attempts 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 it is not executing in running in RUNDLL32.DLL, it reads the following registry entry:
md = "{random values}"
It then executes the returned random values.
SOLUTION
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Scan your computer with your Trend Micro product and note files detected as WORM_MORTO.SMB
Step 3
Restart in Safe Mode
Step 4
Search and delete the file detected as WORM_MORTO.SMB
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_MORTO.SMB. 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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