RDN/Ransom!3C1F6587B9​2C

This page shows details and results of our analysis on the malware RDN/Ransom!3C1F6587B92C

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

1716224

Description Added

2013-06-12

Description Modified

2013-06-12

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Ransom
Length1716224 bytes
MD53c1f6587b92c487f9cc96b15f1fedaea
SHA148dbcefee0323686036c9f580ed47fc3de752884


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Variant.Graftor.76858 (B)
avastWin32:Malware-gen
AVG (GriSoft)Generic33.KJK (Trojan horse)
aviraTR/Somhoveran.A.247
KasperskyTrojan-Ransom.Win32.Gimemo.bcdt
BitDefenderGen:Variant.Graftor.76858
Dr.WebTrojan.AVKill.30965
FortiNetW32/LockScreen.ATZ!tr
MicrosoftTrojan:Win32/Somhoveran.A
EsetWin32/LockScreen.ATZ
normanwinpe/Troj_Generic.LVPOT
vba32Hoax.Gimemo

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


ActivitiesRisk Levels
Prevents the use of the default Windows Registry Editor.High
Disables the Windows Task Manager.High
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Adds or modifies winlogon shell registry value. Could be used to launch a program on startup.Medium
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/Ransom
McAfee SupportedRDN/Ransom



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:

48DBCEFEE0323686036C9F580ED47FC3DE752884

The following files have been added to the system:

  • C:\Izobrawenie.jpg

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\UNINSTALL\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\SYSTEM\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\RUN\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NOCLOSE = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NOMANAGEMYCOMPUTERVERB = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLETASKMGR = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\UNINSTALL\NOADDREMOVEPROGRAMS = 1
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\SYSTEM\DISABLECMD = 2
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\SHELL = %TEMP%\48DBCEFEE0323686036C9F580ED47FC3DE752884
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\RUN\ASYNCHRONOUS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\RUN\DLLNAME = windows.dll
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\RUN\IMPERSONATE = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\RUN\LOGON = Executeapi
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NOVIEWONDRIVE = 12
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\WINDOWS = %TEMP%\48DBCEFEE0323686036C9F580ED47FC3DE752884
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SAFEBOOT\ALTERNATESHELL = %TEMP%\48DBCEFEE0323686036C9F580ED47FC3DE752884
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\CDROM\AUTORUN = 0
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\CDROM\START = 0
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\USBSTOR\START = 0

The applications attempted the following network connection(s):

  • 217.199.218.***:80
  • hxxp://rghost.ru/download/46408924/5ece0d637eeb7ade1b04cb7e4bfb6c9a12e24f43/*****

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