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Potential Memory Seeking Activity

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Potential Memory Seeking Activity

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Monitors for the execution of Unix utilities that may be leveraged as memory address seekers. Attackers may leverage built-in utilities to seek specific memory addresses, allowing for potential future manipulation/exploitation.

Rule type: eql

Rule indices:

logs-endpoint.events.*
endgame-*

Severity: low

Risk score: 21

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/arget13/DDexec

Tags:

Domain: Endpoint
OS: Linux
Use Case: Threat Detection
Tactic: Discovery
Rule Type: BBR
Data Source: Elastic Defend
Data Source: Elastic Endgame

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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process where host.os.type == "linux" and event.action in ("exec", "exec_event") and event.type == "start" and (
  (process.name == "tail" and process.args == "-c") or
  (process.name == "cmp" and process.args == "-i") or
  (process.name in ("hexdump", "xxd") and process.args == "-s") or
  (process.name == "dd" and process.args : ("skip*", "seek*"))
)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
Technique:
- Name: Process Discovery
- ID: T1057
- Reference URL: https://attack.mitre.org/techniques/T1057/

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