TROJ_PRARDRUKAT.AE


 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes


  TECHNICAL DETAILS

File Size:

2,340,864 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

08 Dec 2016

Payload:

Drops files, Connects to URLs/IPs

Arrival Details

This Trojan may be downloaded from the following remote sites:

  • http://{BLOCKED}l.{BLOCKED}tantservice.com/install/Setup.exe
  • http://{BLOCKED}e.{BLOCKED}specialists.ru/js/boxun4.exe

Installation

This Trojan drops the following files:

  • %Windows%\CRMSvc.exe - executed as service

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}

It adds the following registry entries:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
DisplayName = Yubby

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
DisplayVesion = 1.6.1.867

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
InstallDate = {mm/dd/yyyy}

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
InstallLocation = %Windows%

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
EstimatedSize = 2286

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
NoModify = 1

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
NoRepair = 1

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
Publisher = CRM Ltd

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
QuietUninstallString = %Windows%\CRMSvc.exe -- uninst

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{D105DFE2-8DF6-4BA0-ABF1-392716658963}
UninstallString = %Windows%\CRMSvc.exe --uninst

Backdoor Routine

This Trojan connects to the following URL(s) to send and receive commands from a remote malicious user:

  • http://{BLOCKED}.{BLOCKED}.8.183
  • http://{BLOCKED}.{BLOCKED}.118.173
  • http://{BLOCKED}.{BLOCKED}.16.230
  • http://{BLOCKED}.{BLOCKED}.58.40

  SOLUTION

Minimum Scan Engine:

9.800

VSAPI OPR PATTERN File:

12.950.00

VSAPI OPR PATTERN Date:

09 Dec 2016

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • {D105DFE2-8DF6-4BA0-ABF1-392716658963}

Step 5

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %Windows%\CRMSvc.exe

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_PRARDRUKAT.AE. 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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