PE_VIRUT.XL-3
Virus:Win32/Virut.AE (Microsoft); W32/Virut.gen (McAfee); W32.Virut.U (Symantec); Trojan-Downloader.Win32.Boaxxe.ax (Kaspersky); Virus.Win32.Virut.b (v) (Sunbelt); Win32.Virtob.Gen.9 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This file infector 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
18,944 bytes
EXE
No
28 Nov 2011
Arrival Details
This file infector 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 file infector modifies the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Session Manager\SFC
ProgramFilesDir = "%Program Files%"
(Note: The default value data of the said registry entry is %Program Files%.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Session Manager\SFC
CommonFilesDir = "%Program Files%\Common Files"
(Note: The default value data of the said registry entry is %Program Files%\Common Files.)
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\SFC
- From: ProgramFilesDir="%Program Files%"
To: ProgramFilesDir=%Program Files%
- From: ProgramFilesDir="%Program Files%"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\SFC
- From: CommonFilesDir="%Program Files%\Common Files"
To: CommonFilesDir=%Program Files%\Common Files
- From: CommonFilesDir="%Program Files%\Common Files"
Step 3
Scan your computer with your Trend Micro product to clean files detected as PE_VIRUT.XL-3. 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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