collection_linux_suspicious_clipboard_activity.toml

[metadata]
creation_date = "2023/07/27"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
min_stack_version = "8.6.0"
updated_date = "2023/07/27"

[rule]
author = ["Elastic"]
description = """
This rule monitors for the usage of the most common clipboard utilities on unix systems by an uncommon process group 
leader. Adversaries may collect data stored in the clipboard from users copying information within or between 
applications. 
"""
from = "now-119m"
interval = "60m"
index = ["logs-endpoint.events.*"]
language = "kuery"
license = "Elastic License v2"
name = "Potential Suspicious Clipboard Activity Detected"
risk_score = 21
rule_id = "884e87cc-c67b-4c90-a4ed-e1e24a940c82"
severity = "low"
tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Collection", "Rule Type: BBR", "Data Source: Elastic Defend"]
type = "new_terms"
building_block_type = "default"
query = '''
event.category:process and host.os.type:"linux" and event.action:"exec" and event.type:"start" and 
process.name:("xclip" or "xsel" or "wl-clipboard" or "clipman" or "copyq")
'''

[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1115"
name = "Clipboard Data"
reference = "https://attack.mitre.org/techniques/T1115/"

[rule.threat.tactic]
id = "TA0009"
name = "Collection"
reference = "https://attack.mitre.org/tactics/TA0009/"

[rule.new_terms]
field = "new_terms_fields"
value = ["host.id", "process.group_leader.executable"]

[[rule.new_terms.history_window_start]]
field = "history_window_start"
value = "now-7d"