RDN/Generic Dropper!3BFF233E8EBD

This page shows details and results of our analysis on the malware RDN/Generic Dropper!3BFF233E8EBD

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

7146 (2013-07-24)

Updated DAT

7146 (2013-07-24)

Minimum Engine

5400.1158

File Length

1222400

Description Added

2013-07-25

Description Modified

2013-07-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic Dropper
Length1222400 bytes
MD53bff233e8ebdb7ef7cf142ee0b6435bf
SHA1fb95681becab771f713eb10e43c7f3baba3556e9


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Variant.Symmi.24439 (B)
avastWin32:Malware-gen
AVG (GriSoft)Crypt2.HEN (Trojan horse)
aviraTR/Drop.Vunop
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderGen:Variant.Symmi.24439
Dr.WebTrojan.DownLoader9.52664
FortiNetW32/Ponmocup.GA!tr
MicrosoftTrojanDropper:Win32/Vunop
SymantecTrojan.ADH
EsetWin32/Kryptik.BCIS trojan (variant)
normanTroj_Generic.NCECM
pandaTrj/Genetic.gen
SophosMal/Generic-S
Trend MicroTROJ_GEN.R0CBB01GK13
V-BusterTrojan.Kryptik!Ge7Unu0FpqM (trojan)

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


ActivitiesRisk Levels
Attempts to connect to a medium risk domain that may pose a minor security risk.Medium
Enumerates many system files and directories.Low
Enumerates process listLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Generic Dropper
McAfee SupportedRDN/Generic Dropper



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:

FB95681BECAB771F713EB[private subnet]BABA3556E9

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\sigverifc.exe

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

  • %TEMP%\~unins4349.bat

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\XFFNHFHAM\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\
  • HKEY_LOCAL_MACHINE\SOFTWARE\XFFNHFHAM\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\6 = 767149322
  • HKEY_CURRENT_USER\SOFTWARE\XFFNHFHAM\DFO = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\6 = 767149322
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\YBRD = %WINDIR%\SYSTEM32\sigverifc.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\XFFNHFHAM\DFO = [binary data]
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\FB95681BECAB771F713EB[private subnet]BABA3556E9

The applications attempted the following network connection(s):

  • 93.115.88.***:80

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