Dropper-FAX!BB889A612​93B!BB889A61293B

This page shows details and results of our analysis on the malware Dropper-FAX!BB889A61293B!BB889A61293B

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

98752

Description Added

2013-04-25

Description Modified

2013-04-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionDropper-FAX!BB889A61293B
Length98752 bytes
MD5bb889a61293b402ba0d8a6860d2c2e26
SHA117b89e1854630b42232e2332d83e9a96871b3de5


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Bjlog
avastWin32:Zegost-I
AVG (GriSoft)Generic22.ABKF (Trojan horse)
aviraTR/Tiarev.A
BitDefenderGen:Variant.Kazy.22089
clamavPUA.Win32.Packer.Nspack-24
Dr.WebTrojan.DownLoader1.26310
F-ProtW32/Downloader.AT.gen!Eldorado
FortiNetW32/Genome.AFT!tr
MicrosoftTrojanDropper:Win32/Zegost.B
SymantecBackdoor.Trojan
normanBjlog.B
risingTrojan.Win32.KillAV.cyd
SophosMal/PWS-FY
vba32SScope.Adware.Baidu.01015
V-BusterPacked/NSPack (sequence)
Vet (Computer Associates)Win32/Zegost.RS!genus

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow


McAfee ScansScan Detections
McAfee BetaDropper-FAX!BB889A61293B
McAfee SupportedDropper-FAX!BB889A61293B



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:

17B89E1854630B42232E2332D83E9A96871B3DE5

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\f5859b27.rdb
  • %USERPROFILE%\Local Settings\dktyioeycb
  • %ALLUSERSPROFILE%\Application Data\Storm\update\%SESSIONNAME%\vnqqg.cc3

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

  • C:\hqhvfscor

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCOR\
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\PARAMETERS\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCOR\MODULE = c:\docume~1\admini~1.vmg\locals~1\dktyioeycb
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCOR\SERVICEDLL = %ALLUSERSPROFILE%\Application Data\Storm\update\%SESSIONNAME%\vnqqg.cc3
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCOR\SERVICEMAIN = BuildTrusteeWithSidA
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\DEPENDONSERVICE = RpcSs
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\DESCRIPTION = Enables generic input access to Human Interface Devices (HID), which activates and maintains the use of predefined hot buttons on keyboards, remote controls, and other multimedia devices. If this service is stopped, hot buttons controlled by this service will no longer function. If this service is disabled, any services that explicitly depend on it will fail to start.
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\DISPLAYNAME = Human Interface Device Access
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\ERRORCONTROL = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\FAILUREACTIONS = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\IMAGEPATH = %SystemRoot%\SYSTEM32\svchost.exe -k netsvcs
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\OBJECTNAME = LocalSystem
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\START = 4
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\TYPE = 32
  • HKEY_LOCAL_MACHINE\SOFTWARE\HQHVFSCORU\PARAMETERS\SERVICEDLL = %SystemRoot%\SYSTEM32\hidserv.dll

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