Unusual Linux User Calling the Metadata Service
editUnusual Linux User Calling the Metadata Service
editLooks for anomalous access to the cloud platform metadata service by an unusual user. The metadata service may be targeted in order to harvest credentials or user data scripts containing secrets.
Rule type: machine_learning
Machine learning job: v3_linux_rare_metadata_user
Machine learning anomaly threshold: 75
Severity: low
Risk score: 21
Runs every: 15 minutes
Searches indices from: now-45m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Linux
- Threat Detection
- ML
- Credential Access
Version: 100 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positives
editA newly installed program, or one that runs under a new or rarely used user context, could trigger this detection rule. Manual interrogation of the metadata service during debugging or troubleshooting could trigger this rule. ==== Threat mapping
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Unsecured Credentials
- ID: T1552
- Reference URL: https://attack.mitre.org/techniques/T1552/
Rule version history
edit- Version 100 (8.5.0 release)
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- Formatting only
- Version 5 (8.4.0 release)
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- Formatting only
- Version 4 (8.3.0 release)
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- Formatting only
- Version 3 (7.14.0 release)
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- Formatting only
- Version 2 (7.12.0 release)
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- Formatting only