Justin Ibarra
59da2da474
* add unit tests to ensure host type and platform are included * add host.os.name 'linux' to all linux rules * add host.os.name macos to mac rules * add host.os.name to windows rules; fix linux dates * update from host.os.name to host.os.type Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com> Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
68 lines
2.1 KiB
TOML
68 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/01/13"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/02/22"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies downloads of executable and archive files via the Windows Background Intelligent Transfer Service (BITS).
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Adversaries could leverage Windows BITS transfer jobs to download remote payloads.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Ingress Transfer via Windows BITS"
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references = ["https://attack.mitre.org/techniques/T1197/"]
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risk_score = 21
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rule_id = "f95972d3-c23b-463b-89a8-796b3f369b49"
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severity = "low"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion", "Command and Control"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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file where host.os.type == "windows" and event.action == "rename" and
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process.name : "svchost.exe" and file.Ext.original.name : "BIT*.tmp" and
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(file.extension :("exe", "zip", "rar", "bat", "dll", "ps1", "vbs", "wsh", "js", "vbe", "pif", "scr", "cmd", "cpl") or file.Ext.header_bytes : "4d5a*") and
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/* noisy paths, for hunting purposes you can use the same query without the following exclusions */
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not file.path : ("?:\\Program Files\\*", "?:\\Program Files (x86)\\*", "?:\\Windows\\*", "?:\\ProgramData\\*\\*") and
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/* lot of third party SW use BITS to download executables with a long file name */
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not length(file.name) > 30
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1105"
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name = "Ingress Tool Transfer"
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reference = "https://attack.mitre.org/techniques/T1105/"
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[rule.threat.tactic]
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id = "TA0011"
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name = "Command and Control"
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reference = "https://attack.mitre.org/tactics/TA0011/"
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1197"
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name = "BITS Jobs"
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reference = "https://attack.mitre.org/techniques/T1197/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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