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Virus Profile: Generic Downloader.jr!9177E32F3E9F

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/8/2012
Date Added: 5/8/2012
Origin: Unknown
Length: 213890
Type: Trojan
Subtype: -
DAT Required: 6705
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 DetectionGeneric Downloader.jr
Length213890 bytes
MD59177e32f3e9fd9e592a335e7bd72b911
SHA11ab1fea07d7f3ce59166b53bca1ea63da5a4b5b6


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin-Trojan/Agent4.Gen
avastWin32:Dropper-GHV
AVG (GriSoft)Agent3.KAY
aviraTR/Spy.Agent.586689
BitDefenderTrojan.Generic.KDV.243816
clamavWorm.Autorun-7724
Dr.WebTrojan.Proxy.19660
FortiNetW32/Agent.SNP!tr
MicrosoftWorm:Win32/Ganelp.gen!A
SymantecW32.Griptolo
EsetWin32/Agent.SRG trojan
normanW32/Ganelp.A
pandaGeneric Worm
risingTrojan.Win32.Fednu.dcy
SophosW32/Autorun-BRT
Trend MicroWORM_GANELP.SMIA
vba32Trojan.Agent.ncik
V-BusterTrojan.Agent!F5zDd6w9iok (trojan)
Vet (Computer Associates)Win32/Ganelp!generic

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


ActivitiesRisk Levels
Modifies Windows firewall settings.Medium
Attempts to add an event to the Windows task scheduler. This could be used to launch programs at pre-defined intervals.Low
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric Downloader.jr
McAfee SupportedGeneric Downloader.jr



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:

1ab1fea07d7f3ce59166b53bca1ea63da5a4b5b6

The following files have been added to the system:

  • %PROGRAMFILES%\746301ae\jusched.exe
  • %WINDIR%\Tasks\Update23.job

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

  • %PROGRAMFILES%\746301ae\746301ae

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\AUTHORIZEDAPPLICATIONS\LIST\%PROGRAMFILES%\746301AE\JUSCHED.EXE = %PROGRAMFILES%\746301ae\jusched.exe:*:Enabled:JavaUpdate23

The applications attempted the following network connection(s):

  • 209.190.85.***:21
  • 209.202.252.**:21
  • 209.190.85.***:21 (irc) : USER b12_8082975

   

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.