EggShell Backdoor Execution

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Identifies the execution of and EggShell Backdoor. EggShell is a known post exploitation tool for macOS and Linux.

Rule type: query

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Endpoint
  • OS: Linux
  • OS: macOS
  • Use Case: Threat Detection
  • Tactic: Execution
  • Data Source: Elastic Defend

Version: 103

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:(process_started or start) and process.name:espl and process.args:eyJkZWJ1ZyI6*

Framework: MITRE ATT&CKTM