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使用重复令牌创建的进程

编辑

使用重复令牌创建的进程

编辑

识别模仿其他用户登录会话令牌创建进程的行为。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: 中

风险评分: 47

运行频率: 5分钟

搜索索引起始时间: now-9m (日期数学格式，另请参见 额外回溯时间)

每次执行的最大警报数: 100

参考:

https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createprocesswithtokenw

标签:

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: 3

规则作者:

Elastic

规则许可: 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

 user.id : ("S-1-5-21-*", "S-1-12-1-*") and

 (process.Ext.effective_parent.executable regex~ """[C-Z]:\\Windows\\(System32|SysWOW64)\\[a-zA-Z0-9\-\_\.]+\.exe""" or
  process.Ext.effective_parent.executable : "?:\\Windows\\explorer.exe") and

 (
  process.name : ("powershell.exe", "cmd.exe", "rundll32.exe", "notepad.exe", "net.exe", "ntdsutil.exe",
                  "tasklist.exe", "reg.exe", "certutil.exe", "bitsadmin.exe", "msbuild.exe", "esentutl.exe") or

  ((process.Ext.relative_file_creation_time <= 900 or process.Ext.relative_file_name_modify_time <= 900) and
   not process.code_signature.status : ("trusted", "errorExpired", "errorCode_endpoint*") and
   not process.executable : ("?:\\Program Files\\*", "?:\\Program Files (x86)\\*"))
 ) and
 not (process.name : "rundll32.exe" and
      process.command_line : ("*davclnt.dll,DavSetCookie*", "*?:\\Program Files*",
                              "*\\Windows\\System32\\winethc.dll*", "*\\Windows\\SYSTEM32\\EDGEHTML.dll*",
                              "*shell32.dll,SHCreateLocalServerRunDll*")) and
 not startswith~(process.Ext.effective_parent.name, process.parent.name) and
 not (process.name : "powershell.exe" and process.parent.name : "wmiprvse.exe" and process.Ext.effective_parent.executable : "?:\\Windows\\System32\\wsmprovhost.exe") and
 not (process.Ext.effective_parent.executable : "?:\\Windows\\System32\\RuntimeBroker.exe" and process.parent.executable : "?:\\Windows\\System32\\sihost.exe") and
 not (process.Ext.effective_parent.executable : "?:\\Windows\\System32\\sethc.exe" and process.parent.executable : "?:\\Windows\\System32\\svchost.exe") and
 not (process.Ext.effective_parent.executable : "?:\\Windows\\explorer.exe" and
      process.parent.executable : ("?:\\Windows\\System32\\svchost.exe", "?:\\Windows\\System32\\msiexec.exe", "?:\\Windows\\twain_32\\*.exe"))

框架: MITRE ATT&CK^TM

战术
- 名称: 权限提升
- ID: TA0004
- 参考 URL: https://attack.mitre.org/tactics/TA0004/
技术
- 名称: 访问令牌操纵
- ID: T1134
- 参考 URL: https://attack.mitre.org/techniques/T1134/
子技术
- 名称: 令牌模拟/窃取
- ID: T1134.001
- 参考 URL: https://attack.mitre.org/techniques/T1134/001/
子技术
- 名称: 使用令牌创建进程
- ID: T1134.002
- 参考 URL: https://attack.mitre.org/techniques/T1134/002/

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