使用提升的令牌创建进程

编辑

识别以 SYSTEM 身份运行并模拟 Windows 核心二进制文件权限的进程的创建。攻击者可能会使用不同的令牌创建新进程以提升权限并绕过访问控制。

规则类型: eql

规则索引:

  • logs-endpoint.events.process-*

严重性: 高

风险评分: 73

: 5 分钟运行一次

搜索索引自: now-9m (日期数学格式,另见 额外回溯时间)

每次执行的最大告警数: 100

参考资料:

标签:

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

版本: 6

规则作者:

  • Elastic

规则许可证: Elastic License v2

规则查询

编辑
/* This rule is only compatible with Elastic Endpoint 8.4+ */

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

 /* CreateProcessWithToken and effective parent is a privileged MS native binary used as a target for token theft */
 user.id : "S-1-5-18"  and

 /* Token Theft target process usually running as service are located in one of the following paths */
 process.Ext.effective_parent.executable :
                ("?:\\Windows\\*.exe",
                 "?:\\Program Files\\*.exe",
                 "?:\\Program Files (x86)\\*.exe",
                 "?:\\ProgramData\\*") and

/* Ignores Utility Manager in Windows running in debug mode */
 not (process.Ext.effective_parent.executable : "?:\\Windows\\System32\\Utilman.exe" and
      process.parent.executable : "?:\\Windows\\System32\\Utilman.exe" and process.parent.args : "/debug") and

/* Ignores Windows print spooler service with correlation to Access Intelligent Form */
not (process.parent.executable : "?\\Windows\\System32\\spoolsv.exe" and
     process.executable: "?:\\Program Files*\\Access\\Intelligent Form\\*\\LaunchCreate.exe") and

/* Ignores Windows error reporting executables */
 not process.executable : ("?:\\Windows\\System32\\WerFault.exe",
                           "?:\\Windows\\SysWOW64\\WerFault.exe",
                           "?:\\Windows\\System32\\WerFaultSecure.exe",
                           "?:\\Windows\\SysWOW64\\WerFaultSecure.exe",
                           "?:\\windows\\system32\\WerMgr.exe",
                           "?:\\Windows\\SoftwareDistribution\\Download\\Install\\securityhealthsetup.exe")  and

 /* Ignores Windows updates from TiWorker.exe that runs with elevated privileges */
 not (process.parent.executable : "?:\\Windows\\WinSxS\\*\\TiWorker.exe" and
      process.executable : ("?:\\Windows\\Microsoft.NET\\Framework*.exe",
                            "?:\\Windows\\WinSxS\\*.exe",
                            "?:\\Windows\\System32\\inetsrv\\iissetup.exe",
                            "?:\\Windows\\SysWOW64\\inetsrv\\iissetup.exe",
                            "?:\\Windows\\System32\\inetsrv\\aspnetca.exe",
                            "?:\\Windows\\SysWOW64\\inetsrv\\aspnetca.exe",
                            "?:\\Windows\\System32\\lodctr.exe",
                            "?:\\Windows\\SysWOW64\\lodctr.exe",
                            "?:\\Windows\\System32\\netcfg.exe",
                            "?:\\Windows\\Microsoft.NET\\Framework*\\*\\ngen.exe",
                            "?:\\Windows\\Microsoft.NET\\Framework*\\*\\aspnet_regiis.exe")) and


/* Ignores additional parent executables that run with elevated privileges */
 not process.parent.executable :
               ("?:\\Windows\\System32\\AtBroker.exe",
                "?:\\Windows\\system32\\svchost.exe",
                "?:\\Program Files (x86)\\*.exe",
                "?:\\Program Files\\*.exe",
                "?:\\Windows\\System32\\msiexec.exe",
                "?:\\Windows\\System32\\DriverStore\\*") and

/* Ignores Windows binaries with a trusted signature and specific signature name */
 not (process.code_signature.trusted == true and
      process.code_signature.subject_name :
                ("philandro Software GmbH",
                 "Freedom Scientific Inc.",
                 "TeamViewer Germany GmbH",
                 "Projector.is, Inc.",
                 "TeamViewer GmbH",
                 "Cisco WebEx LLC",
                 "Dell Inc"))

框架: MITRE ATT&CKTM