sigma-rules/rules/windows/persistence_via_bits_job_notify_command.toml

[metadata]
creation_date = "2021/12/04"
integration = ["endpoint", "windows"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/03/06"

[rule]
author = ["Elastic"]
description = """
An adversary can use the Background Intelligent Transfer Service (BITS) SetNotifyCmdLine method to execute a program
that runs after a job finishes transferring data or after a job enters a specified state in order to persist on a
system.
"""
from = "now-9m"
index = ["logs-endpoint.events.*", "winlogbeat-*", "logs-windows.*", "endgame-*"]
language = "eql"
license = "Elastic License v2"
name = "Persistence via BITS Job Notify Cmdline"
note = """## Setup

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
"""
references = [
    "https://pentestlab.blog/2019/10/30/persistence-bits-jobs/",
    "https://docs.microsoft.com/en-us/windows/win32/api/bits1_5/nf-bits1_5-ibackgroundcopyjob2-setnotifycmdline",
    "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/bitsadmin-setnotifycmdline",
    "https://www.elastic.co/blog/hunting-for-persistence-using-elastic-security-part-2",
]
risk_score = 47
rule_id = "c3b915e0-22f3-4bf7-991d-b643513c722f"
severity = "medium"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence", "Elastic Endgame"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "windows" and event.type == "start" and
  process.parent.name : "svchost.exe" and process.parent.args : "BITS" and
  not process.executable :
              ("?:\\Windows\\System32\\WerFaultSecure.exe",
               "?:\\Windows\\System32\\WerFault.exe",
               "?:\\Windows\\System32\\wermgr.exe",
               "?:\\WINDOWS\\system32\\directxdatabaseupdater.exe")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1197"
name = "BITS Jobs"
reference = "https://attack.mitre.org/techniques/T1197/"


[rule.threat.tactic]
id = "TA0003"
name = "Persistence"
reference = "https://attack.mitre.org/tactics/TA0003/"