通过父进程PID欺骗提升权限编辑

识别用于创建提升的子进程的父进程欺骗。攻击者可能会伪造新进程的父进程标识符 (PPID) 以逃避进程监控防御或提升权限。

规则类型: eql

规则索引:

  • logs-endpoint.events.process-*

严重程度: 高

风险评分: 73

每隔: 5m 运行

: now-9m 搜索索引 (日期数学格式,另请参见 额外回溯时间)

每次执行的最大警报数: 100

参考资料:

标签:

  • 域: 端点
  • 操作系统: Windows
  • 用例: 威胁检测
  • 策略: 权限提升
  • 数据源: Elastic Defend

版本: 7

规则作者:

  • Elastic

规则许可证: Elastic License v2

规则查询编辑

/* This rule is compatible with Elastic Endpoint only */

process where host.os.type == "windows" and event.action == "start" and

 /* process creation via seclogon */
 process.parent.Ext.real.pid > 0 and

 /* PrivEsc to SYSTEM */
 user.id : "S-1-5-18"  and

 /* Common FPs - evasion via hollowing is possible, should be covered by code injection */
 not process.executable : ("?:\\Windows\\System32\\WerFault.exe",
                           "?:\\Windows\\SysWOW64\\WerFault.exe",
                           "?:\\Windows\\System32\\WerFaultSecure.exe",
                           "?:\\Windows\\SysWOW64\\WerFaultSecure.exe",
                           "?:\\Windows\\System32\\Wermgr.exe",
                           "?:\\Windows\\SysWOW64\\Wermgr.exe",
                           "?:\\Windows\\SoftwareDistribution\\Download\\Install\\securityhealthsetup.exe") and
 /* Logon Utilities */
 not (process.parent.executable : "?:\\Windows\\System32\\Utilman.exe" and
     process.executable : ("?:\\Windows\\System32\\osk.exe",
                           "?:\\Windows\\System32\\Narrator.exe",
                           "?:\\Windows\\System32\\Magnify.exe")) and

 not process.parent.executable : "?:\\Windows\\System32\\AtBroker.exe" and

 not (process.code_signature.subject_name in
           ("philandro Software GmbH", "Freedom Scientific Inc.", "TeamViewer Germany GmbH", "Projector.is, Inc.",
            "TeamViewer GmbH", "Cisco WebEx LLC", "Dell Inc") and process.code_signature.trusted == true) and

 /* AM_Delta_Patch Windows Update */
 not (process.executable : ("?:\\Windows\\System32\\MpSigStub.exe", "?:\\Windows\\SysWOW64\\MpSigStub.exe") and
      process.parent.executable : ("?:\\Windows\\System32\\wuauclt.exe",
                                   "?:\\Windows\\SysWOW64\\wuauclt.exe",
                                   "?:\\Windows\\UUS\\Packages\\Preview\\*\\wuaucltcore.exe",
                                   "?:\\Windows\\UUS\\amd64\\wuauclt.exe",
                                   "?:\\Windows\\UUS\\amd64\\wuaucltcore.exe",
                                   "?:\\ProgramData\\Microsoft\\Windows\\UUS\\*\\wuaucltcore.exe")) and
 not (process.executable : ("?:\\Windows\\System32\\MpSigStub.exe", "?:\\Windows\\SysWOW64\\MpSigStub.exe") and process.parent.executable == null) and

 /* Other third party SW */
 not process.parent.executable :
                   ("?:\\Program Files (x86)\\HEAT Software\\HEAT Remote\\HEATRemoteServer.exe",
                    "?:\\Program Files (x86)\\VisualCron\\VisualCronService.exe",
                    "?:\\Program Files\\BinaryDefense\\Vision\\Agent\\bds-vision-agent-app.exe",
                    "?:\\Program Files\\Tablet\\Wacom\\WacomHost.exe",
                    "?:\\Program Files (x86)\\LogMeIn\\x64\\LogMeIn.exe",
                    "?:\\Program Files (x86)\\EMC Captiva\\Captiva Cloud Runtime\\Emc.Captiva.WebCaptureRunner.exe",
                    "?:\\Program Files\\Freedom Scientific\\*.exe",
                    "?:\\Program Files (x86)\\Google\\Chrome Remote Desktop\\*\\remoting_host.exe",
                    "?:\\Program Files (x86)\\GoToAssist Remote Support Customer\\*\\g2ax_comm_customer.exe") and
 not (
    process.code_signature.trusted == true and process.code_signature.subject_name == "Netwrix Corporation" and
    process.name : "adcrcpy.exe" and process.parent.executable : (
      "?:\\Program Files (x86)\\Netwrix Auditor\\Active Directory Auditing\\Netwrix.ADA.EventCollector.exe",
      "?:\\Program Files (x86)\\Netwrix Auditor\\Active Directory Auditing\\Netwrix.ADA.Analyzer.exe",
      "?:\\Netwrix Auditor\\Active Directory Auditing\\Netwrix.ADA.EventCollector.exe"
    )
 )

框架: MITRE ATT&CKTM