Samirbous
82 lines
2.6 KiB
TOML
82 lines
2.6 KiB
TOML
[metadata]
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creation_date = "2020/11/04"
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maturity = "production"
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updated_date = "2021/03/09"
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[rule]
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author = ["Elastic"]
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description = """
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Adversaries may implement command and control communications that use common web services in order to hide their
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activity. This attack technique is typically targeted to an organization and uses web services common to the victim
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network which allows the adversary to blend into legitimate traffic. activity. These popular services are typically
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targeted since they have most likely been used before a compromise and allow adversaries to blend in the network.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Connection to Commonly Abused Web Services"
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risk_score = 21
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rule_id = "66883649-f908-4a5b-a1e0-54090a1d3a32"
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severity = "low"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "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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network where network.protocol == "dns" and
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process.name != null and user.id not in ("S-1-5-19", "S-1-5-20") and
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/* Add new WebSvc domains here */
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dns.question.name :
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(
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"raw.githubusercontent.*",
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"*.pastebin.*",
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"*drive.google.*",
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"*docs.live.*",
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"*api.dropboxapi.*",
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"*dropboxusercontent.*",
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"*onedrive.*",
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"*4shared.*",
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"*.file.io",
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"*filebin.net",
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"*slack-files.com",
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"*ghostbin.*",
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"*ngrok.*",
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"*portmap.*",
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"*serveo.net",
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"*localtunnel.me",
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"*pagekite.me",
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"*localxpose.io",
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"*notabug.org"
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) and
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/* Insert noisy false positives here */
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not process.executable :
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(
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"C:\\Program Files\\*.exe",
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"C:\\Program Files (x86)\\*.exe",
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"C:\\Windows\\System32\\WWAHost.exe",
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"C:\\Windows\\System32\\smartscreen.exe",
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"C:\\Windows\\System32\\MicrosoftEdgeCP.exe",
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"C:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\*\\MsMpEng.exe",
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"C:\\Users\\*\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe",
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"C:\\Users\\*\\AppData\\Local\\Programs\\Fiddler\\Fiddler.exe",
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"C:\\Users\\*\\AppData\\Local\\Programs\\Microsoft VS Code\\Code.exe",
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"C:\\Users\\*\\AppData\\Local\\Microsoft\\OneDrive\\OneDrive.exe"
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)
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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 = "T1102"
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name = "Web Service"
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reference = "https://attack.mitre.org/techniques/T1102/"
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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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