sigma-rules/rules_building_block/discovery_generic_process_discovery.toml

[metadata]
creation_date = "2023/07/13"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/09/14"
bypass_bbr_timing = true

[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.*"]
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"
        ]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "windows" and event.type == "start" and
  (
    process.name :("PsList.exe", "qprocess.exe") or 
   (process.name : "powershell.exe" and process.args : ("*get-process*", "*Win32_Process*")) or 
   (process.name : "wmic.exe" and process.args : ("process", "*Win32_Process*")) or
   (process.name : "tasklist.exe" and not process.args : ("pid eq*")) or
   (process.name : "query.exe" and process.args : "process")
  ) and not user.id : "S-1-5-18"
'''

[[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/"