title: Linux Network Service Scanning - Auditd
id: 3761e026-f259-44e6-8826-719ed8079408
related:
- id: 3e102cd9-a70d-4a7a-9508-403963092f31
type: derived
status: test
description: Detects enumeration of local or remote network services.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md
author: Alejandro Ortuno, oscd.community
date: 2020-10-21
modified: 2023-09-26
tags:
- attack.discovery
- attack.t1046
logsource:
product: linux
service: auditd
definition: 'Configure these rules https://github.com/Neo23x0/auditd/blob/e181243a7c708e9d579557d6f80e0ed3d3483b89/audit.rules#L182-L183'
detection:
selection:
type: 'SYSCALL'
exe|endswith:
- '/telnet'
- '/nmap'
- '/netcat'
- '/nc'
- '/ncat'
- '/nc.openbsd'
key: 'network_connect_4'
condition: selection
falsepositives:
- Legitimate administration activities
level: low