BAT_VOBFUS.SM
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
TECHNICAL DETAILS
Arrival Details
This Trojan may be dropped by the following malware:
NOTES:
This is the Trend Micro detection for the batch file component of WORM_VOBFUS malware which is used to delete the initially executed copy of a WORM_VOBFUS variant.
This malicious batch file continuously checks for the presence of the WORM_VOBFUS variant. It deletes the said file when found. However, if the WORM_VOBFUS variant does not exist, this batch file deletes itself after execution.
This batch file contains the following format:
:{letter}
del {WORM_VOBFUS path and file name}
if exist { WORM_VOBFUS path and file name} goto {letter}
del /F {malware path and file name}
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 to delete files detected as BAT_VOBFUS.SM 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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