伪装成浏览器进程的潜在威胁

编辑

识别浏览器进程的可疑实例,例如未签名或使用异常证书签名的进程,这些实例可能表明试图隐藏恶意活动、绕过安全功能(例如允许列表)或诱骗用户执行恶意软件。

规则类型: eql

规则索引:

  • logs-endpoint.events.process-*

严重性: 低

风险评分: 21

运行频率: 5 分钟

搜索索引时间范围: now-9m (日期数学格式,另请参见 额外回溯时间)

每次执行的最大告警数: 100

参考资料: 无

标签:

  • 领域:终端
  • 操作系统:Windows
  • 用例:威胁检测
  • 战术:防御规避
  • 战术:持久性
  • 规则类型:BBR
  • 数据源:Elastic Defend

版本: 5

规则作者:

  • Elastic

规则许可证: Elastic License v2

规则查询

编辑
process where host.os.type == "windows" and event.type == "start" and
  (
    /* Chrome Related Processes */
    (process.name : (
      "chrome.exe", "GoogleUpdate.exe", "GoogleCrashHandler64.exe", "GoogleCrashHandler.exe",
      "GoogleUpdateComRegisterShell64.exe", "GoogleUpdateSetup.exe", "GoogleUpdateOnDemand.exe",
      "chrome_proxy.exe", "remote_assistance_host.exe", "remoting_native_messaging_host.exe",
      "GoogleUpdateBroker.exe"
     ) and not
      (process.code_signature.subject_name : ("Google LLC", "Google Inc") and process.code_signature.trusted == true)
     and not
      (
        process.executable : (
          "?:\\Program Files\\HP\\Sure Click\\servers\\chrome.exe",
          "?:\\Program Files\\HP\\Sure Click\\*\\servers\\chrome.exe"
        ) and
        process.code_signature.subject_name : ("Bromium, Inc.") and process.code_signature.trusted == true
      ) and not
      (
        process.executable : (
          "?:\\Program Files\\dynatrace\\synthetic\\Chrome-bin\\chrome.exe"
        ) and
        process.code_signature.subject_name : ("Dynatrace LLC") and process.code_signature.trusted == true
      ) and
     not (
       process.executable : (
         "?:\\Users\\*\\AppData\\Local\\ms-playwright\\chromium-*\\chrome-win\\chrome.exe",
         "?:\\Users\\*\\AppData\\Local\\Programs\\synthetics-recorder\\resources\\local-browsers\\chromium-*\\chrome-win\\chrome.exe",
         "*\\node_modules\\puppeteer\\.local-chromium\\win64-*\\chrome-win\\chrome.exe",
         "?:\\Program Files (x86)\\Invicti Professional Edition\\chromium\\chrome.exe",
         "?:\\Program Files\\End2End, Inc\\ARMS Html Engine\\chrome.exe",
         "?:\\Users\\*\\AppData\\Local\\*BurpSuitePro\\burpbrowser\\*\\chrome.exe",
         "?:\\Users\\*\\AppData\\Roaming\\*BurpSuite\\burpbrowser\\*\\chrome.exe"
       ) and process.args: (
               "--enable-features=NetworkService,NetworkServiceInProcess",
               "--type=crashpad-handler", "--enable-automation", "--disable-xss-auditor"
             )
     )
    ) or

    /* MS Edge Related Processes */
    (process.name : (
      "msedge.exe", "MicrosoftEdgeUpdate.exe", "identity_helper.exe", "msedgewebview2.exe",
      "MicrosoftEdgeWebview2Setup.exe", "MicrosoftEdge_X*.exe", "msedge_proxy.exe",
      "MicrosoftEdgeUpdateCore.exe", "MicrosoftEdgeUpdateBroker.exe", "MicrosoftEdgeUpdateSetup_X*.exe",
      "MicrosoftEdgeUpdateComRegisterShell64.exe", "msedgerecovery.exe", "MicrosoftEdgeUpdateSetup.exe"
     ) and not
      (process.code_signature.subject_name : "Microsoft Corporation" and process.code_signature.trusted == true)
     and not
      (
        process.name : "msedgewebview2.exe" and
        process.code_signature.subject_name : ("Bromium, Inc.", "Amazon.com Services LLC", "Code Systems Corporation") and process.code_signature.trusted == true
      )
    ) or

    /* Brave Related Processes */
    (process.name : (
      "brave.exe", "BraveUpdate.exe", "BraveCrashHandler64.exe", "BraveCrashHandler.exe",
      "BraveUpdateOnDemand.exe", "brave_vpn_helper.exe", "BraveUpdateSetup*.exe",
      "BraveUpdateComRegisterShell64.exe"
     ) and not
      (process.code_signature.subject_name : "Brave Software, Inc." and process.code_signature.trusted == true)
    ) or

    /* Firefox Related Processes */
    (process.name : (
      "firefox.exe", "pingsender.exe", "default-browser-agent.exe", "maintenanceservice.exe",
      "plugin-container.exe", "maintenanceservice_tmp.exe", "maintenanceservice_installer.exe",
      "minidump-analyzer.exe"
     ) and not
      (process.code_signature.subject_name : "Mozilla Corporation" and process.code_signature.trusted == true)
     and not
      (
        process.name : "default-browser-agent.exe" and
        process.code_signature.subject_name : ("WATERFOX LIMITED") and process.code_signature.trusted == true
      )
    ) or

    /* Island Related Processes */
    (process.name : (
      "Island.exe", "IslandUpdate.exe", "IslandCrashHandler.exe", "IslandCrashHandler64.exe",
      "IslandUpdateBroker.exe", "IslandUpdateOnDemand.exe", "IslandUpdateComRegisterShell64.exe",
      "IslandUpdateSetup.exe"
     ) and not
      (process.code_signature.subject_name : "Island Technology Inc." and process.code_signature.trusted == true)
    ) or

    /* Opera Related Processes */
    (process.name : (
      "opera.exe", "opera_*.exe", "browser_assistant.exe"
     ) and not
      (process.code_signature.subject_name : ("Opera Norway AS", "Opera Software AS") and process.code_signature.trusted == true)
    ) or

    /* Whale Related Processes */
    (process.name : (
      "whale.exe", "whale_update.exe", "wusvc.exe"
     ) and not
      (process.code_signature.subject_name : "NAVER Corp." and process.code_signature.trusted == true)
    ) or

    /* Chromium-based Browsers processes */
    (process.name : (
      "chrmstp.exe", "notification_helper.exe", "elevation_service.exe"
     ) and not
      (process.code_signature.subject_name : (
        "Island Technology Inc.",
        "Citrix Systems, Inc.",
        "Brave Software, Inc.",
        "Google LLC",
        "Google Inc",
        "Microsoft Corporation",
        "NAVER Corp.",
        "AVG Technologies USA, LLC",
        "Avast Software s.r.o.",
        "PIRIFORM SOFTWARE LIMITED",
        "NortonLifeLock Inc.",
        "Opera Norway AS"
       ) and process.code_signature.trusted == true
      )
    )
  )

框架: MITRE ATT&CKTM