Ransomware

NetWalker

First seen: 2019-08 • Status: disrupted

Disrupted by Law Enforcement

NetWalker attacked hospitals during COVID-19. The FBI shut it down and arrested people involved, recovering some ransom payments.

Overview

NetWalker was a ransomware-as-a-service that targeted healthcare and education. The FBI disrupted it in 2021 and arrested a Canadian affiliate.

Also Known As

Mailto

How It Spreads

  • Phishing
  • RDP exploitation
  • VPN vulnerabilities

What It Does

  • File encryption
  • Data theft
  • Double extortion

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Target Platforms

Windows

Detection Tips

  • Monitor for NetWalker signatures
  • Watch for fileless techniques

MITRE ATT&CK Techniques

T1486, T1567

If You're Infected

  1. 1.

    Isolate infected systems

  2. 2.

    Report to FBI

Related Malware

Maze, Ryuk

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