shashank-elastic
68 lines
1.8 KiB
TOML
68 lines
1.8 KiB
TOML
[metadata]
|
|
creation_date = "2023/09/27"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
updated_date = "2024/05/21"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
building_block_type = "default"
|
|
description = """
|
|
Identifies an unsigned Windows Background Intelligent Transfer Service (BITS) client process. Attackers may abuse BITS
|
|
functionality to download or upload data using the BITS service.
|
|
"""
|
|
from = "now-119m"
|
|
index = ["logs-endpoint.events.library-*"]
|
|
interval = "60m"
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Unsigned BITS Service Client Process"
|
|
references = [
|
|
"https://web.archive.org/web/20230531215706/https://blog.menasec.net/2021/05/hunting-for-suspicious-usage-of.html",
|
|
"https://www.elastic.co/blog/hunting-for-persistence-using-elastic-security-part-2",
|
|
]
|
|
risk_score = 21
|
|
rule_id = "9a3884d0-282d-45ea-86ce-b9c81100f026"
|
|
severity = "low"
|
|
tags = [
|
|
"Domain: Endpoint",
|
|
"OS: Windows",
|
|
"Use Case: Threat Detection",
|
|
"Tactic: Defense Evasion",
|
|
"Rule Type: BBR",
|
|
"Data Source: Elastic Defend",
|
|
]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
library where dll.name : "Bitsproxy.dll" and process.executable != null and
|
|
not process.code_signature.trusted == true and
|
|
not process.code_signature.status : ("errorExpired", "errorCode_endpoint*")
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1036"
|
|
name = "Masquerading"
|
|
reference = "https://attack.mitre.org/techniques/T1036/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1036.001"
|
|
name = "Invalid Code Signature"
|
|
reference = "https://attack.mitre.org/techniques/T1036/001/"
|
|
|
|
|
|
[[rule.threat.technique]]
|
|
id = "T1197"
|
|
name = "BITS Jobs"
|
|
reference = "https://attack.mitre.org/techniques/T1197/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|
|
|