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Ransom.Win32.MESPINOZA.D.note

March 16, 2021
 Analysis by: Clive Fuentebella
 ALIASES:

Win64/Filecoder.NYO trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware


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. It may be dropped by other malware.

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

  TECHNICAL DETAILS

File Size:

899 bytes

File Type:

TXT

Memory Resident:

No

Payload:

Displays message/message boxes

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.

It may be dropped by the following malware:

  • MESPINOZA ransomware family

Other Details

This Trojan displays the following images:

This is the Trend Micro detection for:

  • Ransom notes dropped by MESPINOZA ransomware family

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

16.576.07

FIRST VSAPI PATTERN DATE:

05 Mar 2021

VSAPI OPR PATTERN File:

16.577.00

VSAPI OPR PATTERN Date:

06 Mar 2021

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.Win32.MESPINOZA.D.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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