WORM_AUTORUN.FNC
Worm:Win32/Dashvolex.A (Microsoft); W32/Autorun.worm.aba (McAfee); W32.SillyFDC (Symantec); Worm.Win32.VB.cat, Worm.Win32.VB.cat (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Worm.Generic.227719 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
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.
TECHNICAL DETAILS
45,056 bytes
EXE
No
09 May 2012
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 System Modifications
This worm modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\Windows
load = "%System Root%\fcSRV.exe"
Dropping Routine
This worm drops the following files:
- %System Root%\1.VBE
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows
- load = "%System Root%\fcSRV.exe"
Step 3
Search and delete this file
- %System Root%\1.VBE
Step 4
Scan your computer with your Trend Micro product to delete files detected as WORM_AUTORUN.FNC. 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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