容器入口点出站连接

编辑

此规则识别一系列事件,其中名为 entrypoint.sh 的进程在容器中启动,随后尝试建立网络连接。此序列表明容器入口点可能存在出站连接。入口点是在 Dockerfile 中指定并在容器启动时执行的命令或脚本。攻击者可以使用此技术在环境中建立立足点、从容器逃逸到主机或建立持久性。

规则类型: eql

规则索引:

  • logs-endpoint.events.*

严重性: 中等

风险评分: 47

每隔: 5m

搜索索引时间范围: now-9m (日期数学格式,另请参阅 额外回溯时间)

每次执行的最大告警数: 100

参考: 无

标签:

  • 领域:端点
  • 领域:容器
  • 操作系统:Linux
  • 用例:威胁检测
  • 战术:执行
  • 数据源:Elastic Defend

版本: 1

规则作者:

  • Elastic

规则许可证: Elastic License v2

规则查询

编辑
sequence by host.id with maxspan=3s
  [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and
   process.entry_leader.entry_meta.type == "container" and process.name == "entrypoint.sh"] by process.entity_id
  [network where event.type == "start" and event.action == "connection_attempted" and not (
     destination.ip == null or destination.ip == "0.0.0.0" or cidrmatch(
       destination.ip, "10.0.0.0/8", "127.0.0.0/8", "169.254.0.0/16", "172.16.0.0/12", "192.0.0.0/24", "192.0.0.0/29",
       "192.0.0.8/32", "192.0.0.9/32", "192.0.0.10/32", "192.0.0.170/32", "192.0.0.171/32", "192.0.2.0/24",
       "192.31.196.0/24", "192.52.193.0/24", "192.168.0.0/16", "192.88.99.0/24", "224.0.0.0/4", "100.64.0.0/10",
       "192.175.48.0/24","198.18.0.0/15", "198.51.100.0/24", "203.0.113.0/24", "240.0.0.0/4", "::1", "FE80::/10",
       "FF00::/8", "172.31.0.0/16"
       )
    )] by process.parent.entity_id

框架: MITRE ATT&CKTM