Samirbous
50bb821708
* [Rules Tuning] Add support for Sysmon ImageLoad Events added correct event.category and event.action to rules using library events to support sysmon eventid 7. `event.category == "library"` --> `(event.category == "process" and event.action : "Image loaded*")` `dll.name` --> `file.name` * added Suspicious RDP ActiveX Client Loaded * Delete workspace.xml
53 lines
1.9 KiB
TOML
53 lines
1.9 KiB
TOML
[metadata]
|
|
creation_date = "2020/11/17"
|
|
maturity = "production"
|
|
updated_date = "2022/08/02"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies a suspicious image load (wmiutils.dll) from Microsoft Office processes. This behavior may indicate
|
|
adversarial activity where child processes are spawned via Windows Management Instrumentation (WMI). This technique can
|
|
be used to execute code and evade traditional parent/child processes spawned from Microsoft Office products.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Suspicious WMI Image Load from MS Office"
|
|
note = """## Setup
|
|
|
|
If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
|
|
"""
|
|
references = [
|
|
"https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16",
|
|
]
|
|
risk_score = 21
|
|
rule_id = "891cb88e-441a-4c3e-be2d-120d99fe7b0d"
|
|
severity = "low"
|
|
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Execution"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
any where
|
|
(event.category == "library" or (event.category == "process" and event.action : "Image loaded*")) and
|
|
process.name : ("WINWORD.EXE", "EXCEL.EXE", "POWERPNT.EXE", "MSPUB.EXE", "MSACCESS.EXE") and
|
|
(dll.name : "wmiutils.dll" or file.name : "wmiutils.dll")
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1047"
|
|
name = "Windows Management Instrumentation"
|
|
reference = "https://attack.mitre.org/techniques/T1047/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0002"
|
|
name = "Execution"
|
|
reference = "https://attack.mitre.org/tactics/TA0002/"
|
|
|