Virus Profile: Downloader.gen.a!5FC90069ACA4

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 7/9/2014
Date Added: 7/9/2014
Origin: Unknown
Length: 122880
Type: Trojan
Subtype: Generic
DAT Required: 7492
Removal Instructions
   
 
 
   

Description

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.

Indication of Infection

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

Methods 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.

   

Virus Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionDownloader.gen.a
Length122880 bytes
MD55fc90069aca4df7884ddfe836766f725
SHA1aa350e2e393250b60d7b6df3ba90f6689d2b646f


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.GenericKDZ.25403 (B)
avastWin32:Trojan-gen
AVG (GriSoft)Inject2.AMHD
aviraTR/Cabhot.A.3
KasperskyTrojan-Downloader.Win32.Cabby.pmg
BitDefenderTrojan.GenericKDZ.25403
Dr.WebTrojan.DownLoad3.33474
F-ProtW32/Downldr2.IZNL
FortiNetW32/Elenoocka.A!tr.dldr
MicrosoftVirTool:Win32/CeeInject.gen!KK
EsetWin32/TrojanDownloader.Elenoocka.A
normanElenoocka.E
pandaTrj/Genetic.gen
SophosTroj/DwnLdr-LRR
Trend MicroSuspicious_GEN.F47V0701

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


ActivitiesRisk Levels
Attempts to write to a memory location of a previously loaded process.Medium
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
Attempts to write to a memory location of an unknown processLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaDownloader.gen.a
McAfee SupportedDownloader.gen.a



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:

AA350E2E393250B60D7B6DF3BA90F6689D2B646F

The following files have been added to the system:

  • %APPDATA%\Microsoft\Office\Recent\AA350E2E393250B60D7B6DF3BA90F6689D2B.doc.LNK
  • %TEMP%\~$350E2E393250B60D7B6DF3BA90F6689D2B.doc
  • %TEMP%\~DF4452.tmp
  • %APPDATA%\Microsoft\Templates\~$Normal.dot
  • %TEMP%\AA350E2E393250B60D7B6DF3BA90F6689D2B.doc
  • %APPDATA%\Microsoft\Office\Recent\Temp.LNK
  • %TEMP%\temp_cab_204984.cab

The following files have been changed:

  • %APPDATA%\Microsoft\Office\Recent\index.dat

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\REVIEWCYCLE\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\MDI WRITER\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\32DB9\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\BASESUITE\1EBDE4BC9A514630B5412561FA45CCC5 = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\INSTALLROOT\UE\{901[private subnet]-11D3-8CFE-0150048383C9} = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\REVIEWCYCLE\REVIEWTOKEN = {910C5E0C-5090-49D1-B5CB-DD9542187798}
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\MDI WRITER\REGVERSION = 3
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\32DB9\32DC9 = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\],
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\I*
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\COMMON\ASSISTANT\CURRASSTSTATE = 38
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\PRODUCTFILES = [private subnet]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\WORDFILES = [private subnet]

The applications attempted the following network connection(s):

  • hxxp://windowsupdate.microsoft.com/

   

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: https://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

   

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