{
  "title": "SystemHelpDesk Detection - Spyagent (Advanced Threat) Execution & Triage",
  "id": "c3312507-369e-5fa2-907b-da76bb7b9474",
  "status": "production",
  "description": "Detects execution, defense evasion, and persistence behaviors associated with the Spyagent malware family. Detects proxy execution, reflective DLL loading, and remote command injection associated with modular enterprise backdoors.",
  "references": [
    "https://malware-families-catalog.systemhelpdesk.com/families/spyagent",
    "https://malware-families-catalog.systemhelpdesk.com/defensive/backdoor-rat-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.advanced-threat",
    "author.ricky-jordan",
    "source.systemhelpdesk-mfc",
    "attack.t1113",
    "attack.t1048",
    "attack.t1543_003",
    "attack.t1056_001"
  ],
  "logsource": {
    "category": "process_creation",
    "product": "windows"
  },
  "detection": {
    "selection_process": {
      "Image|endswith": [
        "\\powershell.exe",
        "\\cmd.exe",
        "\\rundll32.exe",
        "\\regsvr32.exe"
      ],
      "CommandLine|contains": [
        "DownloadString",
        "IEX(",
        "/s /n /u /i:",
        "sc create",
        "start-process"
      ]
    },
    "condition": "selection_process"
  },
  "falsepositives": [
    "Legitimate enterprise administrative scripts during approved change windows",
    "Authorized IT software deployment utilities and backup management agents"
  ],
  "level": "high"
}