shashank-elastic
61 lines
1.8 KiB
TOML
61 lines
1.8 KiB
TOML
[metadata]
|
|
creation_date = "2020/12/21"
|
|
maturity = "production"
|
|
updated_date = "2022/07/26"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Adversaries may modify SSH related binaries for persistence or credential access by patching sensitive functions to
|
|
enable unauthorized access or by logging SSH credentials for exfiltration.
|
|
"""
|
|
false_positives = [
|
|
"Trusted OpenSSH executable updates. It's recommended to verify the integrity of OpenSSH binary changes.",
|
|
]
|
|
from = "now-9m"
|
|
index = ["auditbeat-*", "logs-endpoint.events.*"]
|
|
language = "kuery"
|
|
license = "Elastic License v2"
|
|
name = "Modification of OpenSSH Binaries"
|
|
references = ["https://blog.angelalonso.es/2016/09/anatomy-of-real-linux-intrusion-part-ii.html"]
|
|
risk_score = 47
|
|
rule_id = "0415f22a-2336-45fa-ba07-618a5942e22c"
|
|
severity = "medium"
|
|
tags = ["Elastic", "Host", "Linux", "Threat Detection", "Credential Access", "Persistence"]
|
|
timestamp_override = "event.ingested"
|
|
type = "query"
|
|
|
|
query = '''
|
|
event.category:file and event.type:change and
|
|
process.name:* and
|
|
(file.path:(/usr/sbin/sshd or /usr/bin/ssh or /usr/bin/sftp or /usr/bin/scp) or file.name:libkeyutils.so) and
|
|
not process.name:("dpkg" or "yum" or "dnf" or "dnf-automatic")
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1543"
|
|
name = "Create or Modify System Process"
|
|
reference = "https://attack.mitre.org/techniques/T1543/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0003"
|
|
name = "Persistence"
|
|
reference = "https://attack.mitre.org/tactics/TA0003/"
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1556"
|
|
name = "Modify Authentication Process"
|
|
reference = "https://attack.mitre.org/techniques/T1556/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0006"
|
|
name = "Credential Access"
|
|
reference = "https://attack.mitre.org/tactics/TA0006/"
|
|
|