FREE DOWNLOAD: CyberDudeBivash Wazuh Ransomware Pack v1.1 (Windows + Linux + Active Response)

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Author: CyberDudeBivash • Date: 04 Nov 2025 (IST) • Powered by: CyberDudeBivash

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⬇️ Download — Windows Pack ⬇️ Download — Linux Pack (with AR)

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TL;DR

What you get: Top 10 Windows ransomware rules (Sysmon + Wazuh) and Linux add-on rules (FIM/auditd patterns), plus Active Response (kill process, isolate host) and ready-to-paste ossec.conf snippets.
Why it matters: A default Wazuh install won’t block modern ransomware. These rules and AR wiring close critical gaps fast.
How to use: Import rules → enable AR commands → lab-test with safe simulations → roll out in phases.

What’s Inside (Windows, Linux & Active Response)

Windows (Rules 880100–880109): vssadmin/wbadmin shadow deletion, bcdedit recovery changes, wevtutil clear logs, encoded PowerShell, ransom-note drops, mass-encryption bursts, WMI shadow delete, LOLBin abuse, Defender exclusions.

Linux (Rules 881100–881109): FIM bursts, ransom-note patterns in home dirs, snapshot/backup tampering (btrfs/zfs/timeshift), crypto/archiver misuse, history clearing, bulk chmod/chattr, rclone/mega exfil, LVM snapshot removal, SSH key access bursts.

Active Response (Windows & Linux): kill offending process, optionally isolate host (Windows Firewall/iptables). Ready-to-merge <commands> and <active-response> snippets.

Downloads

⬇️ Windows Rules Pack ⬇️ Linux Rules + Active Response Pack

Note: Both buttons currently route to the same official download page on cyberdudebivash.com.

Installation Guide (5 Minutes)

Copy rules XML: place Windows/Linux XML files into /var/ossec/etc/rules.d/ (or append to local_rules.xml), set perms, restart wazuh-manager.
Place AR scripts: copy kill-process and isolate-host scripts to /var/ossec/active-response/bin/ (Linux scripts must be executable).
Merge config: paste the provided <commands> and <active-response> blocks into /var/ossec/etc/ossec.conf.
Update Manager IP: edit isolation scripts to allow your real Wazuh Manager address.
Restart services: restart Manager and affected Agents.

Active Response Wiring (Quick)

<commands>
  <command><name>cdb-kill-process-win</name><executable>kill-process.ps1</executable><run_on>agent</run_on></command>
  <command><name>cdb-isolate-host-win</name><executable>isolate-host.ps1</executable><run_on>agent</run_on></command>
  <command><name>cdb-kill-process-linux</name><executable>kill-process.sh</executable><run_on>agent</run_on></command>
  <command><name>cdb-isolate-host-linux</name><executable>isolate-host.sh</executable><run_on>agent</run_on></command>
</commands>

<active-response>
  <command>cdb-kill-process-win</command> <location>local</location>
  <rules_id>880100,880101,880102,880103,880104,880105,880106,880107,880108,880109</rules_id>
</active-response>

<active-response>
  <command>cdb-kill-process-linux</command> <location>local</location>
  <rules_id>881100,881101,881102,881103,881104,881105,881106,881107,881108,881109</rules_id>
</active-response>

<!-- Optional higher-confidence isolate -->
<active-response>
  <command>cdb-isolate-host-win</command> <location>local</location>
  <rules_id>880100,880105,880106</rules_id>
</active-response>

<active-response>
  <command>cdb-isolate-host-linux</command> <location>local</location>
  <rules_id>881100,881101,881106</rules_id>
</active-response>

Start with kill-process only. Add isolation after proving detections in a lab to avoid accidental outages.

Safe Testing (Lab)

Windows: create README_RECOVER_FILES.txt on Desktop; run powershell -enc UwBFAFgA; (admin shell) simulate vssadmin delete shadows /all /quiet.
Linux: drop a ransom-note-named file under ~/Documents; simulate controlled FIM bursts; never test destructive commands on production.
Measure: time-to-detect, time-to-kill, files touched before block, false positives.

Tuning & False Positives

Adjust <frequency> / <timeframe> thresholds for mass-encryption heuristics based on workload.
Whitelist known IT automation and backup tools to reduce noise.
Extend FIM to business-critical folders and shared drives; ignore media/cache paths.

Buyer’s Guide (US/EU)

Control	Small Team	Mid-Market	Enterprise
Wazuh SIEM/XDR	Rules + AR	+ EDR	+ SOAR + Threat Intel
Endpoint Protection	Baseline AV	EDR/XDR	EDR + AppControl
Backups	Offline weekly	Immutable daily	Immutable + DR drills

High-CPC topics: ransomware protection for business, XDR vs EDR pricing, immutable backup solutions, SOC as a Service, SIEM for SMB, Windows ransomware recovery services, AI-assisted incident response.

Need Help Now? CyberDudeBivash Services

Wazuh/SIEM Hardening & Ransomware Detections
Sysmon + EDR + Active Response Integration
Incident Response Retainer & Recovery Playbooks

Apps & Products Book a Consultation

FAQ

Will this block all ransomware?

No single pack can. These rules provide strong detections and optional automated kill/isolation. Pair with EDR and immutable backups.

Can I enable isolation in production?

Test in a lab first. Start with kill-process only, then enable isolation for high-confidence rules.

Do I need Sysmon?

For Windows detections, yes — you’ll need Sysmon events forwarded to Wazuh for best coverage.

Hashtags: #CyberDudeBivash #Wazuh #Ransomware #XDR #SIEM #Sysmon #ActiveResponse #MITREATTACK #EDR #IncidentResponse

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