Novice Cybercriminal Exploits Proton Hosting to Spread Malware via Fake Antivirus Site

A novice cybercriminal known as “Coquettte” is leveraging the Russian bulletproof hosting provider Proton66 to distribute malware through a fraudulent antivirus website. Investigations suggest ties to a larger hacking network, highlighting the risks of unsecured hosting services.

Link: https://ift.tt/ozMtO6H

You Should Know:

1. Identifying Fake Antivirus Sites

• Check domain reputation:

  whois example.com 
  curl -I https://example.com 
  

• Use VirusTotal to scan URLs:

  python3 -m pip install vt-py 
  vt scan url https://example.com --apikey YOUR_API_KEY 
  

2. Investigating Malware-Linked Hosting (Proton66)

• Trace IP associations:

  nslookup malicious-site.com 
  traceroute malicious-site.com 
  

• Block Proton66-related IPs in Linux:

  sudo iptables -A INPUT -s 123.456.789.0/24 -j DROP 
  

3. Analyzing Malware Samples

• Use `strings` and `file` commands:

  strings malware.exe | grep -i "http" 
  file suspicious_download.bin 
  

• Sandbox analysis with Cuckoo:

  cuckoo submit --url https://malicious-site.com/download.exe 
  

4. Securing Systems Against Fake AV Attacks

• Windows: Disable unauthorized scripts via PowerShell:

  Set-ExecutionPolicy Restricted 
  

• Linux: Monitor processes for anomalies:

  ps aux | grep -E "(curl|wget)" 
  

What Undercode Say:

The exploitation of bulletproof hosting like Proton66 underscores the need for proactive threat intelligence. Key takeaways:
– Detect: Use OSINT tools (Maltego, SpiderFoot) to map attacker infrastructure.
– Contain: Isolate infected machines using network segmentation (iptables, firewalld).
– Report: Share IOCs (Indicators of Compromise) with platforms like AbuseIPDB.

Relevant Commands:

• Extract URLs from malware:

  grep -oP 'http[bash]?://[^"]+' malware.log 
  

• Windows forensic analysis:

  Get-WinEvent -FilterHashtable @{LogName="Security"; ID=4688} 
  

Expected Output:

• A structured threat report with IOCs (IPs, domains, hashes).
• Automated alerts for Proton66-linked traffic (Snort/Suricata rules).

URLs:

• VirusTotal
• AbuseIPDB

References:

Reported By: Hendryadrian Proton66 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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