Clop Ransomware (MOVEit Exploit)

What is CLOP-RANSOMWARE?

Clop Ransomware (MOVEit Exploit) ranks as a critical-severity malware/security issue in our database. Clop is a ransomware family known for pioneering large-scale data extortion campaigns. It famously exploited zero-day vulnerabilities in managed file transfer (MFT) software, such as MOVEit Transfer (CVE-2023-34362), to steal data and demand ransom without initially encrypting systems. It's also often linked to direct exposure of administrative panels to the public internet. The steps below are ordered to resolve this efficiently.

Common Causes

• Unpatched web applications and managed file transfer systems (MOVEit, Accellion)
• Direct exposure of administrative panels to the public internet
• Weak credential management on file hosting servers

Step-by-Step Fix Guide

• 1
  Apply security updates for MFT software immediately

  "Apply security updates for MFT software immediately" handles an edge case some users report with CLOP-RANSOMWARE.

• 2
  Isolate and disable vulnerable application components

  "Isolate and disable vulnerable application components" is the next step worth ruling out for CLOP-RANSOMWARE.

• 3
  Monitor network logs for large outgoing data transfers (data exfiltration)

  Try "Monitor network logs for large outgoing data transfers (data exfiltration)" next if the issue persists — it addresses a secondary cause.

• 4
  Deploy web application firewalls (WAF) to filter malicious payloads

  "Deploy web application firewalls (WAF) to filter malicious payloads" is the next step worth ruling out for CLOP-RANSOMWARE.

Commands & Diagnostics

Frequently Asked Questions