Elastic Security Detection Rules

Potential Linux Credential Dumping via Proc Filesystem

Last updated 15 days ago on 2025-03-20
Created 2 years ago on 2023-04-26

About

Identifies the execution of the mimipenguin exploit script which is linux adaptation of Windows tool mimikatz. Mimipenguin exploit script is used to dump clear text passwords from a currently logged-in user. The tool exploits a known vulnerability CVE-2018-20781. Malicious actors can exploit the cleartext credentials in memory by dumping the process and extracting lines that have a high probability of containing cleartext passwords.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: Credential AccessUse Case: VulnerabilityData Source: Elastic DefendData Source: SentinelOneData Source: Elastic EndgameLanguage: eql
Severity
medium
Risk Score
47
MITRE ATT&CK™

Credential Access (TA0006)(opens in a new tab or window)

↳ OS Credential Dumping (T1003)(opens in a new tab or window)

↳ Exploitation for Credential Access (T1212)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
endgame-*logs-endpoint.events.process*logs-sentinel_one_cloud_funnel.*
Related Integrations

endpoint(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

Query
sequence by host.id, process.parent.name with maxspan=1m
  [process where host.os.type == "linux" and process.name == "ps" and event.action in ("exec", "start", "exec_event")
   and process.args in ("-eo", "pid", "command")]
  [process where host.os.type == "linux" and process.name == "strings" and event.action in ("exec", "start", "exec_event")
   and process.args : "/tmp/*"]

Install detection rules in Elastic Security

Detect Potential Linux Credential Dumping via Proc Filesystem in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).