sigma-rules/rules_building_block/lateral_movement_at.toml

[metadata]
creation_date = "2023/08/21"
integration = ["endpoint", "windows", "system"]
maturity = "production"
updated_date = "2025/03/20"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
Identifies use of at.exe to interact with the task scheduler on remote hosts. Remote task creations, modifications or
execution could be indicative of adversary lateral movement.
"""
from = "now-119m"
index = [
    "endgame-*",
    "logs-endpoint.events.process-*",
    "logs-system.security*",
    "logs-windows.*",
    "winlogbeat-*",
]
interval = "60m"
language = "eql"
license = "Elastic License v2"
name = "At.exe Command Lateral Movement"
risk_score = 21
rule_id = "b483365c-98a8-40c0-92d8-0458ca25058a"
severity = "low"
tags = [
    "Domain: Endpoint",
    "OS: Windows",
    "Use Case: Threat Detection",
    "Tactic: Lateral Movement",
    "Data Source: Elastic Defend",
    "Rule Type: BBR",
    "Data Source: Elastic Endgame",
    "Data Source: Windows Security Event Logs",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "windows" and event.type == "start" and process.name : "at.exe" and process.args : "\\\\*"
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1021"
name = "Remote Services"
reference = "https://attack.mitre.org/techniques/T1021/"


[rule.threat.tactic]
id = "TA0008"
name = "Lateral Movement"
reference = "https://attack.mitre.org/tactics/TA0008/"
[[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 = "T1053.002"
name = "At"
reference = "https://attack.mitre.org/techniques/T1053/002/"

[[rule.threat.technique.subtechnique]]
id = "T1053.005"
name = "Scheduled Task"
reference = "https://attack.mitre.org/techniques/T1053/005/"



[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"