Analysis by: Clive Fuentebella
ALIASES:

Win32/Filecoder.NWX trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Others

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Others 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: 2,562 bytes
File Type: TXT
Memory Resident: No
Initial Samples Received Date: 16 Oct 2020

Arrival Details

This Others 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:

  • Ransom.Win32.MEGACORTEX

Other Details

This is the Trend Micro detection for:

  • Ransom notes dropped by Ransom.Win32.MEGACORTEX malware family

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 16.290.03
FIRST VSAPI PATTERN DATE: 16 Oct 2020
VSAPI OPR PATTERN File: 16.291.00
VSAPI OPR PATTERN Date: 17 Oct 2020

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.MEGACORTEX.AF.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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