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EggShell Backdoor Execution

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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:

https://github.com/neoneggplant/EggShell

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&CK^TM

Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/
Sub-technique:
- Name: Python
- ID: T1059.006
- Reference URL: https://attack.mitre.org/techniques/T1059/006/

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