Overview
This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then further propagate the virus. Although many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.
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Minimum DAT
5717 (2009-08-22) Updated DAT5717 (2009-08-22) |
Minimum Engine
5300.2777 File Length11776 |
Description Added
2009-08-22 Description Modified2009-08-22 |
Malware Proliferation
Characteristics
| File Property | Property Value |
|---|---|
| FileName | Unavailable |
| McAfee Artemis | Artemis!fcf997ba0c98 |
| McAfee Detection | W32/WBoy.a |
| Length | 11,776 bytes |
| CRC | 1F232E11 |
| MD5 | FCF997BA0C98146074CECFCC8ED3D5FA |
| SHA1 | 5CB68BDFFF356073D76F372E7A5AE4CEB21CA174 |
Other Common Detection Aliases
| Company Name | Detection Name |
|---|---|
| avast | Win32:Luder [Wrm] |
| AVG (GriSoft) | I-Worm/Luder |
| Avira | W32/Texel.M |
| BitDefender | Win32.Luder.Gen |
| clamav | W32.Luder |
| Dr.Web | Trojan.Starter.171 |
| Eset | Win32/Patched.A virus |
| FortiNet | W32/WBoy.a |
| F-Prot | W32/Heuristic-210!Eldorado (suspicious) |
| Kaspersky | Virus.Win32.Texel.k |
| microsoft | Virus:Win32/Luder.B |
| norman | w32/luder.b |
| panda | W32/Patchlog.L |
| rising | Win32.KLdown.b |
| Sophos | Troj/Luder-A |
| Symantec | W32.Whybo!inf |
| Trend Micro | PE_LUDER.CH |
| vba32 | Virus.Win32.Luder.B |
| V-Buster | Trojan.Starter.AH (mutant) |
| Vet (Computer Associates) | Win32/Fuceb |
Avert® Labs has observed the following system activities:
| Activity | Risk Level |
|---|---|
| Modifies memory of other processes | Critical |
| Enumerates open windows | Medium |
| Enumerates running processes | Medium |
| Uses shared memory of other processes | Low |
This sample can be identified by the following symptoms.
System Changes
These are general defaults for typical path variables. (Although they may differ, these examples are common.):
%WinDir% = \WINDOWS (Windows 9x/ME/XP/Vista), \WINNT (Windows NT/2000)
%SystemDir% = \WINDOWS\SYSTEM (Windows 98/ME), \WINDOWS\SYSTEM32 (Windows XP/Vista), \WINNT\SYSTEM32 (Windows NT/2000)
%ProgramFiles% = \Program Files
The following files were analyzed:
The following files have been added to the system:
The following registry elements have been created:
- logging = 0
- file = c:\windows\system32\wbem\logs\\ntevt.log
- level = 0
- maxfilesize = 4335
- type = file
- file = c:\windows\system32\wbem\logs\\wbemsnmp.log
- level = 0
- maxfilesize = 4335
- type = file
Symptoms
This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.
Method of Infection
Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.
Removal
All Users:
Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:
2.Update to current engine and DAT files for detection and removal.
3.Run a complete system scan.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
1. Please go to the Microsoft Recovery Console and restore a clean MBR.
On windows XP:
Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
On Windows Vista and 7:
Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
Variants