defense_evasion_processes_with_trailing_spaces.toml

[metadata]
creation_date = "2023/08/24"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/08/24"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
Identify instances where adversaries include trailing space characters to mimic regular files, disguising their
activity to evade default file handling mechanisms.
"""
from = "now-119m"
interval = "60m"
index = ["logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Processes with Trailing Spaces"
risk_score = 21
rule_id = "0c093569-dff9-42b6-87b1-0242d9f7d9b4"
severity = "low"
tags = ["Domain: Endpoint", "OS: Linux", "OS: macOS","Use Case: Threat Detection", "Tactic: Defense Evasion", "Rule Type: BBR", "Data Source: Elastic Defend"]
timestamp_override = "event.ingested"
type = "eql"
query = '''
process where  event.type in ("start", "process_started") and process.name : "* "
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1036"
name = "Masquerading"
reference = "https://attack.mitre.org/techniques/T1036/"

[[rule.threat.technique.subtechnique]]
id = "T1036.006"
name = "Space after Filename"
reference = "https://attack.mitre.org/techniques/T1036/006/"


[rule.threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"