{
  "author": "_ext-sigma-7a14fbc3-54d9-4b4d-8700-61eddada04f0[bulk][segment]",
  "cat": "Usage Of Web Request Commands And Cmdlets",
  "detect": {
    "event": {
      "BASE_ADDRESS": 140699432779776,
      "COMMAND_LINE": "\"C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe\" --extensions_timeout=10 --config_refresh=60 --force=true --pidfile=osquery\\osquery.pid --events_expiry=1 --logger_event_type=false --config_plugin=osq_config --disable_tables=carves,curl --pack_delimiter=_ --extensions_socket=\\\\.\\pipe\\elastic\\osquery\\f8564f1b-c6a5-4de8-ae17-d8d5f8514234 --flagfile=osquery\\osquery.flags --database_path=osquery\\osquery.db --disable_watchdog=true --extensions_interval=3 --logger_plugin=osq_logger --utc=true --extensions_autoload=osquery\\osquery.autoload",
      "FILE_IS_SIGNED": 1,
      "FILE_PATH": "C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe",
      "HASH": "9ccbc1a4b6de9bd781f054746f30eedcb38299a4adad384cac844b417dce611d",
      "MEMORY_USAGE": 18313216,
      "PARENT": {
        "BASE_ADDRESS": 18874368,
        "COMMAND_LINE": "\"C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\agentbeat.exe\" osquerybeat -E setup.ilm.enabled=false -E setup.template.enabled=false -E management.enabled=true -E management.restart_on_output_change=true -E logging.level=info -E logging.to_stderr=true -E gc_percent=${OSQUERYBEAT_GOGC:100} -E logging.event_data.to_stderr=true -E logging.event_data.to_files=false -E http.enabled=true -E http.host=npipe:///Tes-KQnqbUcPQg8uDyx7wTKw8gZCUxhT.sock -E \"path.data=C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\run\\osquery-so-manager_logstash\"",
        "FILE_IS_SIGNED": 1,
        "FILE_PATH": "C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\agentbeat.exe",
        "MEMORY_USAGE": 107372544,
        "PARENT_ATOM": "e15b9a784f794b787959896369bf04db",
        "PARENT_PROCESS_ID": 2644,
        "PROCESS_ID": 5472,
        "THIS_ATOM": "321673ff2defe712d03fe95a69bf04e6",
        "THREADS": 12,
        "TIMESTAMP": 1774126301278,
        "USER_NAME": "NT AUTHORITY\\SYSTEM"
      },
      "PARENT_PROCESS_ID": 5472,
      "PROCESS_ID": 7352,
      "THREADS": 21,
      "USER_NAME": "NT AUTHORITY\\SYSTEM"
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "bb232d96-3794-4dac-9bc5-a0b1138e3525",
      "event_time": 1774126308539,
      "event_type": "NEW_PROCESS",
      "ext_ip": "67.60.122.240",
      "hostname": "df-labsdc01.dflabs.local",
      "iid": "47501359-645e-4049-906e-e6195da7afcf",
      "int_ip": "192.168.45.129",
      "latency": 5147,
      "moduleid": 2,
      "oid": "ad19afae-3759-4207-b06e-8648b225c455",
      "parent": "321673ff2defe712d03fe95a69bf04e6",
      "plat": 268435456,
      "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
      "tags": [
        "domain-controller",
        "fusion-soc-alert",
        "fusion-soc-case",
        "fusion-soc-pulled",
        "fusion-soc-triage"
      ],
      "this": "aab6cea36cade2c781dd965169bf04e9"
    }
  },
  "detect_id": "af8639d8-7860-4eac-8bb3-239069bf04e9",
  "detect_mtd": {
    "author": "James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger",
    "description": "Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via CommandLine",
    "falsepositives": [
      "Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer."
    ],
    "level": "medium",
    "references": [
      "https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/",
      "https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell",
      "https://learn.microsoft.com/en-us/powershell/module/bitstransfer/add-bitsfile?view=windowsserver2019-ps"
    ],
    "tags": [
      "attack.execution",
      "attack.t1059.001"
    ]
  },
  "gen_time": 1774126313697,
  "link": "https://app.limacharlie.io/orgs/ad19afae-3759-4207-b06e-8648b225c455/sensors/e4a1c62d-4d1f-4472-bae4-43291246b4d4/timeline?time=1774126308\u0026selected=aab6cea36cade2c781dd965169bf04e9",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "bb232d96-3794-4dac-9bc5-a0b1138e3525",
    "event_time": 1774126308539,
    "event_type": "NEW_PROCESS",
    "ext_ip": "67.60.122.240",
    "hostname": "df-labsdc01.dflabs.local",
    "iid": "47501359-645e-4049-906e-e6195da7afcf",
    "int_ip": "192.168.45.129",
    "latency": 5147,
    "moduleid": 2,
    "oid": "ad19afae-3759-4207-b06e-8648b225c455",
    "parent": "321673ff2defe712d03fe95a69bf04e6",
    "plat": 268435456,
    "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
    "tags": [
      "domain-controller",
      "fusion-soc-alert",
      "fusion-soc-case",
      "fusion-soc-pulled",
      "fusion-soc-triage"
    ],
    "this": "aab6cea36cade2c781dd965169bf04e9"
  },
  "rule_tags": [
    "ext:ext-sigma",
    "attack.execution",
    "attack.t1059.001"
  ],
  "source": "ad19afae-3759-4207-b06e-8648b225c455.47501359-645e-4049-906e-e6195da7afcf.e4a1c62d-4d1f-4472-bae4-43291246b4d4.10000000.2",
  "source_rule": "service.windows_process_creation/proc_creation_win_susp_web_request_cmd_and_cmdlets",
  "ts": 1774126313000
}

{
  "virustotal": {
    "malicious": false,
    "provider": "virustotal",
    "reputation": 0,
    "stats": {
      "confirmed-timeout": 0,
      "failure": 0,
      "harmless": 0,
      "malicious": 0,
      "suspicious": 0,
      "timeout": 2,
      "type-unsupported": 4,
      "undetected": 70
    }
  }
}

{
  "confidence": 0.95,
  "false_positive_reason": "Legitimate security software (Elastic Agent) component triggered a broad detection rule based on command-line string matching (\u0027curl\u0027).",
  "investigation_questions": [
    "Is Elastic Agent version 8.18.8 the standard version deployed in your organization?",
    "Were there any other detections on this host around the same time?"
  ],
  "ioc_analysis": "The FILE_PATH \u0027C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe\u0027 is a standard and expected location for Elastic Agent components. The file is digitally signed (FILE_IS_SIGNED: 1). The SHA256 hash \u00279ccbc1a4b6de9bd781f054746f30eedcb38299a4adad384cac844b417dce611d\u0027 was verified against VirusTotal and showed 0 malicious or suspicious detections from 70 engines, confirming its legitimacy.",
  "iocs_extracted": [
    "9ccbc1a4b6de9bd781f054746f30eedcb38299a4adad384cac844b417dce611d",
    "C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe"
  ],
  "mitre_techniques": [
    "T1059"
  ],
  "recommended_actions": [
    "Close case as false positive (unanimous AI verdict)",
    "Whitelist the Elastic Agent osqueryd.exe component in the \u0027proc_creation_win_susp_web_request_cmd_and_cmdlets\u0027 detection rule",
    "Close this alert as a False Positive",
    "Ensure Elastic Agent versions are kept up to date across the environment"
  ],
  "risk_score": 8,
  "severity": "low",
  "summary": "**Vote: UNANIMOUS (3/3 -\u003e FALSE POSITIVE)**\n\n### \u264a gemini-cli Analysis (Primary)\n**Verdict:** false_positive | **Confidence:** 1.0\nThis detection is a false positive. The process \u0027osqueryd.exe\u0027 is a legitimate component of the Elastic Agent security suite, running from its expected installation directory and signed by a trusted vendor. The detection rule \u0027proc_creation_win_susp_web_request_cmd_and_cmdlets\u0027 was likely triggered by the string \u0027curl\u0027 within the \u0027--disable_tables=carves,curl\u0027 command-line argument, which is a standard configuration parameter for this version of Elastic Agent.\n\n**IOC Analysis:** The FILE_PATH \u0027C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe\u0027 is a standard and expected location for Elastic Agent components. The file is digitally signed (FILE_IS_SIGNED: 1). The SHA256 hash \u00279ccbc1a4b6de9bd781f054746f30eedcb38299a4adad384cac844b417dce611d\u0027 was verified against VirusTotal and showed 0 malicious or suspicious detections from 70 engines, confirming its legitimacy.\n\n---\n\n### \ud83e\udd16 qwen3.5:4b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.95\nThis detection is a false positive because osqueryd.exe is a legitimate component of the Elastic Agent running from its expected directory and is signed by Microsoft.\n\n**IOC Analysis:** The process path C:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-8.18.8-bb58d0\\components\\osqueryd.exe matches known-good software locations, and the file is properly signed (FILE_IS_SIGNED: 1). The parent process agentbeat.exe also runs from the same legitimate directory. This is a standard Elastic Agent deployment pattern where osqueryd executes queries for security monitoring.\n\n---\n\n### \ud83e\udd16 deepseek-r1:8b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.9\nThe process creation of osqueryd.exe, a legitimate monitoring tool from Elastic, is likely a false positive due to its location in C:\\Program Files\\, signed binary status, and historical analyst feedback indicating false positives for similar events.\n\n**IOC Analysis:** FILE_PATH is located in C:\\Program Files\\, a legitimate directory for installed software, and the binary is signed, indicating it\u0027s from a trusted vendor. The command line flags are typical for osqueryd configuration and do not show malicious activity. The process is spawned by a legitimate parent process (agentbeat.exe) and runs with SYSTEM privileges, which is common for system services.",
  "verdict": "false_positive",
  "voting": {
    "auto_action": "auto_close_fp",
    "mode": "unanimous",
    "total_models": 3,
    "vote_summary": [
      "gemini-cli: false_positive (low, 100% confidence)",
      "qwen3.5:4b: false_positive (low, 95% confidence)",
      "deepseek-r1:8b: false_positive (low, 90% confidence)"
    ],
    "votes": [
      {
        "confidence": 1.0,
        "model": "gemini-cli",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.95,
        "model": "qwen3.5:4b",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.9,
        "model": "deepseek-r1:8b",
        "verdict": "false_positive"
      }
    ],
    "winning_count": 3,
    "winning_verdict": "false_positive"
  }
}