Virus Profile: Downloader-CMZ!B71D448AD3E1

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 12/26/2011
Date Added: 12/26/2011
Origin: Unknown
Length: 66560
Type: Trojan
Subtype: Downloader
DAT Required: 6570
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-CMZ
Length66560 bytes
MD5b71d448ad3e16ae8500223683d0effc8
SHA105f7abb2f3295f474f45c778b53f078f85efce82


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareWin32.SuspectCrc!ik
ahnlabTrojan/Win32.Menti
avastWin32:MalOb-HP
AVG (GriSoft)Generic23.BRBT (Trojan horse)
aviraTR/Karagany.abad
KasperskyTrojan.Win32.Jorik.Xtoober.gm
BitDefenderTrojan.Generic.6325133
Dr.WebTrojan.Siggen2.25270
FortiNetW32/Xtoober.EDG!tr
MicrosoftTrojanDownloader:Win32/Karagany.A
SymantecTrojan.Gen
EsetWin32/Kryptik.QNK trojan (variant)
normanW32/Karagany.AA
pandaGeneric Trojan
risingTrojan.Win32.Fednu.sts
SophosMal/EncPk-ZQ
Trend MicroBKDR_KARAGANY.SM
vba32Trojan.Karagany
V-BusterTrojan.DL.Karagany.Gen!Pac.2 (mutant)
Vet (Computer Associates)Win32/Karagany.E!generic

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


ActivitiesRisk Levels
Attempts to connect to a high risk domain that may pose a security risk.High
Enumerates many system files and directories.Low
Attempts to send data or commands via HTTPLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaDownloader-CMZ
McAfee SupportedDownloader-CMZ



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:

9b88.exe

The following files have been added to the system:

  • %APPDATA%\Adobe\plugs\mmc126.exe
  • %APPDATA%\Adobe\plugs\mmc171.exe
  • %APPDATA%\Adobe\plugs\mmc2608515.txt

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

  • %APPDATA%\Adobe\shed\thr1.chm

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\DOWNLOADMANAGER\

The applications attempted the following network connection(s):

  • 95.163.73.***:80
  • hxxp://adobe.com/geo/*****

   

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.

   

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