Threat Encyclopedia

TROJ_DIGMINEIN.A

Publish date: January 16, 2018

ALIASES:

Trojan.GenericKD.12694003 (BitDefender); W32/Autoit.CGO!tr (Fortinet); Trojan:Win32/Tiggre!rfn (Microsoft)

PLATFORM:

Windows

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW

Infection Channel:

Downloaded from the Internet

This cryptomining bot was seen spreading through Facebook Messenger and was first observed in South Korea. The malware is sent to victims posing as a video file but in reality is an AutoIt script.

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.

As of this writing, the said sites are inaccessible.

It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible.

TECHNICAL DETAILS

SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.858.02

FIRST VSAPI PATTERN DATE:

22 Dec 2017

VSAPI OPR PATTERN File:

13.859.00

VSAPI OPR PATTERN Date:

23 Dec 2017

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.858.02

FIRST VSAPI PATTERN DATE:

22 Dec 2017

VSAPI OPR PATTERN File:

13.859.00

VSAPI OPR PATTERN Date:

23 Dec 2017

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 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\Run
    • Google Updater = %Application Data%\{User name}\cherry.exe
  • In HKEY_CURRENT_USER\Software\Codec
    • Installed = Yes

Step 5

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\{User name}

Step 6

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