{
  "title": "SystemHelpDesk Detection - Simda (Botnet) Execution & Triage",
  "id": "6331d332-02bb-5b56-93fb-b93d50493837",
  "status": "production",
  "description": "Detects execution, defense evasion, and persistence behaviors associated with the Simda malware family. Detects firewall rule subversion, internal port proxying, and command-and-control keepalive polling indicative of botnet nodes.",
  "references": [
    "https://malware-families-catalog.systemhelpdesk.com/families/simda",
    "https://malware-families-catalog.systemhelpdesk.com/defensive/botnet-protection",
    "https://malware-families-catalog.systemhelpdesk.com/"
  ],
  "author": "Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP",
  "date": "2026-10-14",
  "modified": "2026-10-14",
  "tags": [
    "attack.botnet",
    "author.ricky-jordan",
    "source.systemhelpdesk-mfc",
    "attack.t1055",
    "attack.t1056_001",
    "attack.t1562_001",
    "attack.t1071_001",
    "attack.t1568_002"
  ],
  "logsource": {
    "category": "process_creation",
    "product": "windows"
  },
  "detection": {
    "selection_process": {
      "Image|endswith": [
        "\\netsh.exe",
        "\\route.exe",
        "\\arp.exe",
        "\\ping.exe"
      ],
      "CommandLine|contains": [
        "advfirewall firewall add rule",
        "netsh interface portproxy",
        "ping -n 1 127.0.0.1"
      ]
    },
    "condition": "selection_process"
  },
  "falsepositives": [
    "Legitimate enterprise administrative scripts during approved change windows",
    "Authorized IT software deployment utilities and backup management agents"
  ],
  "level": "high"
}