Jonhnathan
5004ff115c
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
71 lines
2.3 KiB
TOML
71 lines
2.3 KiB
TOML
[metadata]
|
|
creation_date = "2023/09/27"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2024/04/08"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies the execution of a hosted XSL script using the Microsoft.XMLDOM COM interface via Microsoft Office processes.
|
|
This behavior may indicate adversarial activity to execute malicious JScript or VBScript on the system.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.process-*", "logs-endpoint.events.library-*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Remote XSL Script Execution via COM"
|
|
risk_score = 21
|
|
rule_id = "48f657ee-de4f-477c-aa99-ed88ee7af97a"
|
|
severity = "low"
|
|
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Initial Access", "Tactic: Defense Evasion", "Data Source: Elastic Defend"]
|
|
type = "eql"
|
|
|
|
query = '''
|
|
sequence with maxspan=1m
|
|
[library where host.os.type == "windows" and dll.name : "msxml3.dll" and
|
|
process.name : ("winword.exe", "excel.exe", "powerpnt.exe", "mspub.exe")] by process.entity_id
|
|
[process where host.os.type == "windows" and event.action == "start" and
|
|
process.parent.name : ("winword.exe", "excel.exe", "powerpnt.exe", "mspub.exe") and
|
|
not process.executable :
|
|
("?:\\Windows\\System32\\WerFault.exe",
|
|
"?:\\Windows\\SysWoW64\\WerFault.exe",
|
|
"?:\\windows\\splwow64.exe",
|
|
"?:\\Windows\\System32\\conhost.exe",
|
|
"?:\\Program Files\\*.exe",
|
|
"?:\\Program Files (x86)\\*exe")] by process.parent.entity_id
|
|
'''
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1566"
|
|
name = "Phishing"
|
|
reference = "https://attack.mitre.org/techniques/T1566/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1566.002"
|
|
name = "Spearphishing Link"
|
|
reference = "https://attack.mitre.org/techniques/T1566/002/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0001"
|
|
name = "Initial Access"
|
|
reference = "https://attack.mitre.org/tactics/TA0001/"
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1220"
|
|
name = "XSL Script Processing"
|
|
reference = "https://attack.mitre.org/techniques/T1220/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|