Renamed Third Party Administrator Tools


Description

Identifies third party administrative tools commonly used by adversaries but running with unexpected file names.

Query · eql

process where event.action == "start" and
  (
   (process.pe.original_file_name : "procdump" and 
    process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*procdump*.exe") or
   (process.pe.original_file_name : "psexec.c" and process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*psexec*.exe") or
   (process.pe.original_file_name : "sdelete.exe" and process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*sdelete*")
  ) and
  not process.executable :
    ("?:\\Windows\\System32\\*.exe", 
	 "?:\\Windows\\SysWOW64\\*.exe", 
	 "?:\\Program Files (x86)\\*.exe", 
	 "?:\\Program Files\\*.exe")
Raw source Renamed Third Party Administrator Tools · Elastic TOML
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Published by elastic/protections-artifacts ↗, licensed under Elastic License 2.0 ↗. Reproduced here unmodified.
[rule]
description = "Identifies third party administrative tools commonly used by adversaries but running with unexpected file names."
id = "b707de5c-8e4d-4d2c-be22-b09a7e82b73f"
license = "Elastic License v2"
name = "Renamed Third Party Administrator Tools"
os_list = ["windows"]
version = "1.0.33"

query = '''
process where event.action == "start" and
  (
   (process.pe.original_file_name : "procdump" and 
    process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*procdump*.exe") or
   (process.pe.original_file_name : "psexec.c" and process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*psexec*.exe") or
   (process.pe.original_file_name : "sdelete.exe" and process.code_signature.subject_name == "Microsoft Corporation" and not process.name : "*sdelete*")
  ) and
  not process.executable :
    ("?:\\Windows\\System32\\*.exe", 
	 "?:\\Windows\\SysWOW64\\*.exe", 
	 "?:\\Program Files (x86)\\*.exe", 
	 "?:\\Program Files\\*.exe")
'''

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

[[optional_actions]]
action = "rollback"
field = "process.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1036"
name = "Masquerading"
reference = "https://attack.mitre.org/techniques/T1036/"
[[threat.technique.subtechnique]]
id = "T1036.003"
name = "Rename Legitimate Utilities"
reference = "https://attack.mitre.org/techniques/T1036/003/"



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

[internal]
min_endpoint_version = "7.15.0"

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