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BKDR_REDOSDRU.LC

January 21, 2015
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware


This backdoor may be dropped by other malware.

It connects to a website to send and receive information.

It gathers certain information on the affected computer.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

37871195 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

15 Jan 2015

Payload:

Connects to URLs/IPs, Steals information

Arrival Details

This backdoor may be dropped by other malware.

Backdoor Routine

This backdoor connects to the following websites to send and receive information:

  • lovetweitter.{BLOCKED}t.com:6002

Information Theft

This backdoor gathers the following information on the affected computer:

  • Computer name
  • Processor speed (in MHz)
  • Operating system version
  • Number of processors
  • Total amount of memory (in MB)
  • Scan drives

Other Details

This backdoor requires its main component to successfully perform its intended routine.

NOTES:

This backdoor is registered as a service by a component malware to allow automatic execution upon system startup.

It is capable of the following:

  • Download and execute files
  • Record audio
  • Terminate process

It checks the following anti-malware related processes and adds them to the gathered information:

  • 360sd.exe
  • ACAEGMgr.exe
  • AvastSvc.exe
  • avcenter.exe
  • avgwdsvc.exe
  • avp.exe
  • ccsvchst.exe
  • coreServiceShell.exe
  • dwengine.exe
  • egui.exe
  • fsav32.exe
  • knsdtray.exe
  • KvMonXP.exe
  • kxetray.exe
  • Mcshield.exe
  • msmpeng.exe
  • ntrtscan.exe
  • ofcservice.exe
  • oND.eXe
  • PavPrScv.exe
  • rAy.Exe
  • rtvscan.exe
  • savservice.exe

  SOLUTION

Minimum Scan Engine:

9.700

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as BKDR_REDOSDRU.LC. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_REDOSDRU.LC. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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