Ransom.HTML.TRIGONA.YXDEV.note

May 29, 2023
 Analysis by: Francesca Villasanta
 ALIASES:

Win32/Filecoder.OLC trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This Ransomware may be dropped by other malware.

This is the Trend Micro detection for files that exhibit certain behaviors.

  TECHNICAL DETAILS

File Size:

12,700 bytes

File Type:

HTML, HTM

Memory Resident:

No

Initial Samples Received Date:

25 May 2023

Arrival Details

This Ransomware may be dropped by the following malware:

  • TRIGONA ransomware family

Other Details

This is the Trend Micro detection for:

  • Ransom note dropped by TRIGONA ransomware family.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.464.08

FIRST VSAPI PATTERN DATE:

24 May 2023

VSAPI OPR PATTERN File:

18.465.00

VSAPI OPR PATTERN Date:

25 May 2023

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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 Ransom.HTML.TRIGONA.YXDEV.note. 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 the following Trend Micro Support pages for more information:


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