Auditctl Disabled via Shell Process

[rule]
description = """
Detects when auditctl is executed with the `-e 0` option to disable auditing via a shell process. Malware is seen to
disable auditing to avoid detection and to cover its tracks.
"""
id = "36a8d397-7fef-4bdf-9152-71c750168580"
license = "Elastic License v2"
name = "Auditctl Disabled via Shell Process"
os_list = ["linux"]
version = "1.0.4"

query = '''
process where event.type == "start" and event.action == "exec" and
process.name in ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish") and process.args == "-c" and
process.command_line like "*auditctl *-e*0*" and not (
  process.parent.name == "sudo" or
  (process.parent.name like ("python3*", "platform-python3*") and process.args like "declare*")
)
'''

min_endpoint_version = "7.15.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[actions]]
action = "kill_process"
field = "process.parent.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1562"
name = "Impair Defenses"
reference = "https://attack.mitre.org/techniques/T1562/"
[[threat.technique.subtechnique]]
id = "T1562.001"
name = "Disable or Modify Tools"
reference = "https://attack.mitre.org/techniques/T1562/001/"



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

[internal]
min_endpoint_version = "7.15.0"