Generic VB.aaal!0688BFE06D1E

This page shows details and results of our analysis on the malware Generic VB.aaal!0688BFE06D1E

Overview

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum DAT

7055 (2013-04-24)

Updated DAT

7055 (2013-04-24)

Minimum Engine

5400.1158

File Length

73964

Description Added

2013-04-25

Description Modified

2013-04-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric VB.aaal
Length73964 bytes
MD50688bfe06d1e995d4263c3af8b33a765
SHA1088024984342f1311b87b8abd9004b91fce08222


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.Generic.6761191 (B)
ahnlabTrojan/Win32.Vilsel
avastWin32:VB-AEMS
AVG (GriSoft)Win32/DH{ZEM} (suspicious)
aviraTR/Regdis.73728.2
KasperskyTrojan.Win32.Vilsel.aly
BitDefenderTrojan.Generic.6761191
clamavTrojan.VB-55934
Dr.WebTrojan.Siggen2.50583
eSafe (Alladin)Win32.Trojan
F-ProtW32/Vilsel.AG
FortiNetW32/Vilsel.ALY!tr
MicrosoftTrojanDropper:Win32/Lamechi.B
SymantecTrojan Horse
normanVilsel.CE
risingTrojan.Win32.Fednu.fua
SophosTroj/VB-EUH
Trend MicroTROJ_VILSEL.AI
vba32Trojan.Vilsel
V-BusterTrojan.Vilsel!j/caUescIyw (trojan)
Vet (Computer Associates)Win32/Vilsel.BV

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Prevents the use of the default Windows Registry Editor.High
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Modifies Windows explorer file browser's Advanced settings. Sometimes used by malware to make executable files look like documents.Medium
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric VB.aaal
McAfee SupportedGeneric VB.aaal



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

088024984342F1311B87B8ABD9004B91FCE08222

The following files have been added to the system:

  • %TEMP%\088024984342F1311B87B8ABD9004B91FCE08222.zip
  • %TEMP%\Backup.exe
  • %TEMP%\~DFF70A.tmp
  • C:\backup.exe
  • %TEMP%\088024984342F1311B87B8ABD9004B91FCE08222.exe

The following files were temporarily written to disk then later removed:

  • %TEMP%\scsF.tmp
  • %TEMP%\temp.zip
  • %TEMP%\088024984342F1311B87B8ABD9004B91FCE08222.dat
  • %TEMP%\scsE.tmp

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\HIDDEN = 2
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\HIDEFILEEXT = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\CABINETSTATE\FULLPATH = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NOFOLDEROPTIONS = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NOFOLDEROPTIONS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Removal

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

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