Analysis by: Mar Philip Elaurza
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

File Size: 23,160 bytes
File Type: XML
Memory Resident: No
Initial Samples Received Date: 08 Apr 2016

Arrival Details

This Trojan may be hosted on a website and run when a user accesses the said website.

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CURRENT_USER\Console\%SystemRoot%_System32_WindowsPowerShell_v1.0_powershell.exe
WindowPosition = 201329664

HKEY_CURRENT_USER\Console\%SystemRoot%_System32_svchost.exe
WindowPosition = 201329664

HKEY_CURRENT_USER\Console\taskeng.exe
WindowPosition = 201329664

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}fix.info/u/?a={random}&c={random}&r={random}

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 12.462.07
FIRST VSAPI PATTERN DATE: 12 Apr 2016
VSAPI OPR PATTERN File: 12.463.00
VSAPI OPR PATTERN Date: 13 Apr 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

Close all opened browser windows

Step 4

Delete this registry value

[ 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_CURRENT_USER\Console\%SystemRoot%_System32_WindowsPowerShell_v1.0_powershell.exe
    • WindowPosition = 201329664
  • In HKEY_CURRENT_USER\Console\%SystemRoot%_System32_svchost.exe
    • WindowPosition = 201329664
  • In HKEY_CURRENT_USER\Console\taskeng.exe
    • WindowPosition = 201329664

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_DNSCHANGER.POW. 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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