sigmaDRL-1.1from SigmaHQ/sigma

Nginx Core Dump

Detects a core dump of a crashing Nginx worker process, which could be a signal of a serious problem or exploitation attempts.

Quality

100

FP risk

—

Forks

Views

ATT&CK techniques

T1499.004

Rule sourcerules/web/product/nginx/web_nginx_core_dump.yml

title: Nginx Core Dump
id: 59ec40bb-322e-40ab-808d-84fa690d7e56
status: test
description: Detects a core dump of a crashing Nginx worker process, which could be a signal of a serious problem or exploitation attempts.
references:
    - https://docs.nginx.com/nginx/admin-guide/monitoring/debugging/#enabling-core-dumps
    - https://www.x41-dsec.de/lab/advisories/x41-2021-002-nginx-resolver-copy/
author: Florian Roth (Nextron Systems)
date: 2021-05-31
modified: 2023-05-08
tags:
    - attack.impact
    - attack.t1499.004
logsource:
    service: nginx
detection:
    keywords:
        - 'exited on signal 6 (core dumped)'
    condition: keywords
falsepositives:
    - Serious issues with a configuration or plugin
level: high