通过 Outlook 的可疑进程间通信

编辑

检测通过组件对象模型 (Component Object Model) 与 Outlook 进行进程间通信的可疑进程。攻击者可能会通过 API 访问用户电子邮件,以收集敏感信息或代表用户发送电子邮件。

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

搜索索引范围: now-9m ( 日期数学格式,另请参阅 额外回溯时间)

每次执行的最大警报数: 100

参考:

标签:

  • 域: 端点
  • 操作系统: Windows
  • 用例: 威胁检测
  • 战术: 收集
  • 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
sequence with maxspan=1m
[process where host.os.type == "windows" and event.action == "start" and
  (
    process.name : (
      "rundll32.exe", "mshta.exe", "powershell.exe", "pwsh.exe",
      "cmd.exe", "regsvr32.exe", "cscript.exe", "wscript.exe"
    ) or
    (
      (process.code_signature.trusted == false or process.code_signature.exists == false) and
      (process.Ext.relative_file_creation_time <= 500 or process.Ext.relative_file_name_modify_time <= 500)
    )
  )
] by process.entity_id
[process where host.os.type == "windows" and event.action == "start" and process.name : "OUTLOOK.EXE" and
  process.Ext.effective_parent.name != null] by process.Ext.effective_parent.entity_id

框架: MITRE ATT&CKTM