sigma-rules/rules_building_block/discovery_generic_process_discovery.toml

[metadata]
bypass_bbr_timing = true
creation_date = "2023/07/13"
integration = ["endpoint", "windows", "system"]
maturity = "production"
updated_date = "2025/12/17"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
This rule identifies the execution of commands that can be used to enumerate running processes. Adversaries may
enumerate processes to identify installed applications and security solutions.
"""
from = "now-9m"
index = [
    "logs-endpoint.events.process-*",
    "logs-system.security*",
    "logs-windows.*",
    "winlogbeat-*",
]
language = "eql"
license = "Elastic License v2"
name = "Process Discovery Using Built-in Tools"
risk_score = 21
rule_id = "4982ac3e-d0ee-4818-b95d-d9522d689259"
severity = "low"
tags = [
    "Domain: Endpoint",
    "OS: Windows",
    "Use Case: Threat Detection",
    "Tactic: Discovery",
    "Rule Type: BBR",
    "Data Source: Elastic Defend",
    "Data Source: Windows Security Event Logs",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "windows" and event.type == "start" and process.args != null and 
  not user.id in ("S-1-5-18", "S-1-5-19", "S-1-5-20") and process.parent.executable != null and
  (
   process.name :("PsList.exe", "qprocess.exe") or

   (process.name : "powershell.exe" and process.args : ("*get-process*", "*Win32_Process*") and not process.parent.name in ("openaev-agent.exe", "cmd.exe", "Miro.exe", "Granola.exe", "Wispr Flow.exe")) or

   (process.name : "wmic.exe" and process.args : ("process", "*Win32_Process*") and not process.parent.name in ("Code.exe", "node.exe", "javaw.exe", "java.exe", "asus_framework.exe", "Evernote.exe", "RingCentral.exe", "Avaya Cloud.exe", "Arduino IDE.exe")) or

   (process.name : "tasklist.exe" and process.args_count == 1 and process.parent.args != "tasklist | findstr consent.exe") or

   (process.name : "query.exe" and process.args : ("process", "imagename*", "csv", "/fi"))
  ) and
  not process.working_directory like ("?:\\Program Files*", "D:\\*", "E:\\*") and
  not process.parent.executable like ("?:\\Program Files (x86)\\*.exe", "?:\\Program Files\\*.exe")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1057"
name = "Process Discovery"
reference = "https://attack.mitre.org/techniques/T1057/"


[rule.threat.tactic]
id = "TA0007"
name = "Discovery"
reference = "https://attack.mitre.org/tactics/TA0007/"