For Consumer

Virus Profile: RDN/Downloader.a!ry!BA17DE0AC887

Threat Search
Print
   
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 7/12/2014
Date Added: 7/12/2014
Origin: Unknown
Length: 124178
Type: Trojan
Subtype: -
DAT Required: 7497
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 DetectionRDN/Downloader.a!ry
Length124178 bytes
MD5ba17de0ac887201aed8e6bc890e38506
SHA1a73167863d31a690bb14961722d4944fa006b089


Other Common Detection Aliases

Company NamesDetection Names
ahnlabDropper/Win32.Necurs
avastWin32:Rootkit-gen [Rtk]
aviraTR/Dropper.VB.14220
KasperskyTrojan.Win32.Inject.nzvc
FortiNetW32/Inject.BHRB!tr
MicrosoftTrojanDownloader:Win32/Recslurp.A
EsetWin32/Injector.BHRB
Trend MicroBKDR_RBOT.SMNT

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


ActivitiesRisk Levels
Attempts to write to a memory location of a Windows system processHigh
Attempts to write to a memory location of a previously loaded process.Medium
Modifies Windows firewall settings.Medium
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
Attempts to write to a memory location of an unknown processLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Downloader.a!ry
McAfee SupportedRDN/Downloader.a!ry



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:

A73167863D31A690BB14961722D4944FA006B089

The following files have been added to the system:

  • %APPDATA%\csrss.exe
  • %APPDATA%\SYSTEM32\rundll32.exe
  • %APPDATA%\SYSTEM32\svchost.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\0 = .{RM#"'$H/::l N : #/rML5/U/2 :^o+1)
  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\1 = .{RM#"'$H/::l N : #/rML5/U_8!=H,}{P3''I-"z~o71H
  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\2 = .{RM#"'$H/::l N : #/rML5/U_8!=H,}{P2$*E.==b$*,
  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\D
  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\F = 339
  • HKEY_CURRENT_USER\SOFTWARE\BC CLIENTS\S = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\CLIENT SERVER RUNTIME PROCESS = %APPDATA%\csrss.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\HOST-PROCESS WINDOWS (RUNDLL32.EXE) = %APPDATA%\csrss.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\SERVICE HOST PROCESS FOR WINDOWS = %APPDATA%\SYSTEM32\svchost.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\CLIENT SERVER RUNTIME PROCESS = %APPDATA%\csrss.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\HOST-PROCESS WINDOWS (RUNDLL32.EXE) = %APPDATA%\SYSTEM32\rundll32.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\SERVICE HOST PROCESS FOR WINDOWS = %APPDATA%\SYSTEM32\svchost.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\AUTHORIZEDAPPLICATIONS\LIST\CLIENT SERVER RUNTIME PROCESS = %APPDATA%\csrss.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\AUTHORIZEDAPPLICATIONS\LIST\HOST-PROCESS WINDOWS (RUNDLL32.EXE) = %APPDATA%\csrss.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\AUTHORIZEDAPPLICATIONS\LIST\SERVICE HOST PROCESS FOR WINDOWS = %APPDATA%\SYSTEM32\svchost.exe

The applications attempted the following network connection(s):

  • 0.0.0.*:7000
  • 217.23.3.***:4500
  • 217.23.3.***:7000
  • 65.55.176.***:25

   

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.

   

PC Infected? Get Expert Help

McAfee
Virus Removal Service

Connect to one of our Security Experts by phone. Have your PC fixed remotely - while you watch!

$89.95