RDN/Generic Dropper!rp!A8D208BD11​05

This page shows details and results of our analysis on the malware RDN/Generic Dropper!rp!A8D208BD1105

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 Engine

5600.1067

File Length

335888

Description Added

2013-09-29

Description Modified

2013-09-29

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic Dropper!rp
Length335888 bytes
MD5a8d208bd11051bdfa9e9cd3f27b4f135
SHA16ed3aae9044332c5e6b8bfc12b679622fb7e0387


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.Generic.5049591 (B)
ahnlabDropper/Win32.Mudrop
avastWin32:Malware-gen
AVG (GriSoft)Dropper.Generic2.BRUO
aviraTR/Dropper.Gen
KasperskyTrojan-Dropper.Win32.Mudrop.lfw
BitDefenderTrojan.Generic.5049591
clamavWin.Trojan.Mudrop-37
Dr.WebTrojan.PWS.Siggen.26287
F-ProtW32/BadBHO.AE.gen!Eldorado
FortiNetW32/Mudrop.MBC!tr
MicrosoftTrojan:Win32/BHO.DZ
SymantecTrojan.Gen
EsetWin32/Phobiq.A
normanwinpe/Mudrop.EJW
SophosTroj/Inject-OS
Trend MicroTROJ_AG.FA40CEB2
vba32TrojanDropper.Mudrop
V-BusterTrojan.DR.Mudrop!MXM7OpqNQ9A (trojan)
Vet (Computer Associates)Win32/SillyBHO.GMF

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Enumerates process listLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


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



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:

6ED3AAE9044332C5E6B8BFC12B679622FB7E0387

The following files have been added to the system:

  • %COMMONPROGRAMFILES%\System\msadc\msjdaa.sys
  • %COMMONPROGRAMFILES%\System\ado\msicqx.dat
  • %COMMONPROGRAMFILES%\System\msadc\msjdaa.dat
  • %COMMONPROGRAMFILES%\System\msadc\pp_data0
  • %COMMONPROGRAMFILES%\System\ado\msicqx.dll

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

  • %COMMONPROGRAMFILES%\System\msadc\msmfsx.dll
  • %COMMONPROGRAMFILES%\System\msadc\msqofu.exe
  • %COMMONPROGRAMFILES%\System\msadc\mstphs.exe

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\BHOLDR\
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPHOST\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\HOOKOSR
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\OSRLDR
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\PPINST = 2
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\PPNAME
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\PPPATH
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\REDDRV = msjdaa.dat
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPINT = 2
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\BHOLDR\CLSID = {6C877222-D875-4ABA-9798-648E8BEBCD3C}
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\BHOLDR\PATH = %COMMONPROGRAMFILES%\System\ado\msicqx.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\BHODEP = %COMMONPROGRAMFILES%\System\ado\msicqx.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\BHOVER = 101102
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\EXEVER = 1
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\INIURL = http://u.youheme.com/updater.ini
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPDATER\SYSVER = 1
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPHOST\CALC.EXE = %WINDIR%\SYSTEM32\calc.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\PHO\UPHOST\NOTEPAD.EXE = %WINDIR%\SYSTEM32\notepad.exe

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

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


1. Disable Windows System Restore. For instructions, please refer to: http://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.

Variants