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TROJ_EMOTET.WJTG

December 09, 2014
 Analysis by: Homer Pacag
 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 arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

335,456 bytes

File Type:

EXE

Initial Samples Received Date:

05 Dec 2014

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan adds the following registry entries:

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\technetcdn.com\
www
http = 2

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\technetcdn.com\
www
https = 2

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\stocksmarketwatch.com\
www
http = 2

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\stocksmarketwatch.com\
www
https = 2

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\google.com\
docs
http = 2

HKCU\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\google.com\
docs
https = 2

Other Details

This Trojan connects to the following possibly malicious URL:

  • https://www.{BLOCKED}arketwatch.com/exchange/stocks.html
  • http://www.{BLOCKED}cdn.com/exchange/stocks.html

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

11.322.01

FIRST VSAPI PATTERN DATE:

04 Dec 2014

VSAPI OPR PATTERN File:

11.320.00

VSAPI OPR PATTERN Date:

04 Dec 2014

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

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\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\technetcdn.com\www
    • http = 2
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\technetcdn.com\www
    • https = 2
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\stocksmarketwatch.com\www
    • http = 2
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\stocksmarketwatch.com\www
    • https = 2
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\google.com\docs
    • http = 2
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\google.com\docs
    • https = 2

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_EMOTET.WJTG. 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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