Elastic high stable eql

Incoming DCOM Lateral Movement via MSHTA

Identifies the use of Distributed Component Object Model (DCOM) to execute commands from a remote host, which are launched via the HTA Application COM Object. This behavior may indicate an attacker abusing a DCOM application to move laterally while attempting to evade detection.

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Detection Logic

sequence with maxspan=1m
  [process where host.os.type == "windows" and event.type == "start" and
     process.name : "mshta.exe" and process.args : "-Embedding"
  ] by host.id, process.entity_id
  [network where host.os.type == "windows" and event.type == "start" and process.name : "mshta.exe" and
     network.direction : ("incoming", "ingress") and network.transport == "tcp" and
     source.port > 49151 and destination.port > 49151 and source.ip != "127.0.0.1" and source.ip != "::1"
  ] by host.id, process.entity_id

Field Validations

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