Jonhnathan
79 lines
2.6 KiB
TOML
79 lines
2.6 KiB
TOML
[metadata]
|
|
creation_date = "2020/12/15"
|
|
integration = ["endpoint", "windows"]
|
|
maturity = "production"
|
|
updated_date = "2024/10/15"
|
|
min_stack_version = "8.14.0"
|
|
min_stack_comments = "Breaking change at 8.14.0 for the Windows Integration."
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies the PowerShell process loading the Task Scheduler COM DLL followed by an outbound RPC network connection
|
|
within a short time period. This may indicate lateral movement or remote discovery via scheduled tasks.
|
|
"""
|
|
false_positives = ["Legitimate scheduled tasks may be created during installation of new software."]
|
|
from = "now-9m"
|
|
index = [
|
|
"winlogbeat-*",
|
|
"logs-endpoint.events.library-*",
|
|
"logs-endpoint.events.network-*",
|
|
"logs-windows.sysmon_operational-*",
|
|
]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Outbound Scheduled Task Activity via PowerShell"
|
|
references = [
|
|
"https://www.volexity.com/blog/2020/12/14/dark-halo-leverages-solarwinds-compromise-to-breach-organizations/",
|
|
"https://www.elastic.co/security-labs/hunting-for-lateral-movement-using-event-query-language",
|
|
]
|
|
risk_score = 47
|
|
rule_id = "5cd55388-a19c-47c7-8ec4-f41656c2fded"
|
|
severity = "medium"
|
|
tags = [
|
|
"Domain: Endpoint",
|
|
"OS: Windows",
|
|
"Use Case: Threat Detection",
|
|
"Tactic: Execution",
|
|
"Data Source: Elastic Defend",
|
|
"Data Source: Sysmon",
|
|
]
|
|
type = "eql"
|
|
|
|
query = '''
|
|
sequence by host.id, process.entity_id with maxspan = 5s
|
|
[any where host.os.type == "windows" and (event.category == "library" or (event.category == "process" and event.action : "Image loaded*")) and
|
|
(?dll.name : "taskschd.dll" or file.name : "taskschd.dll") and process.name : ("powershell.exe", "pwsh.exe", "powershell_ise.exe")]
|
|
[network where host.os.type == "windows" and process.name : ("powershell.exe", "pwsh.exe", "powershell_ise.exe") and destination.port == 135 and not destination.address in ("127.0.0.1", "::1")]
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1053"
|
|
name = "Scheduled Task/Job"
|
|
reference = "https://attack.mitre.org/techniques/T1053/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1053.005"
|
|
name = "Scheduled Task"
|
|
reference = "https://attack.mitre.org/techniques/T1053/005/"
|
|
|
|
|
|
[[rule.threat.technique]]
|
|
id = "T1059"
|
|
name = "Command and Scripting Interpreter"
|
|
reference = "https://attack.mitre.org/techniques/T1059/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1059.001"
|
|
name = "PowerShell"
|
|
reference = "https://attack.mitre.org/techniques/T1059/001/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0002"
|
|
name = "Execution"
|
|
reference = "https://attack.mitre.org/tactics/TA0002/"
|
|
|