Linux Network Service Scanning Tools Execution

calendar Oct 28, 2023 · attack.discovery attack.t1046  ·
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Detects execution of network scanning and reconnaisance tools. These tools can be used for the enumeration of local or remote network services for example.

Sigma rule (View on GitHub)

 1title: Linux Network Service Scanning Tools Execution
 2id: 3e102cd9-a70d-4a7a-9508-403963092f31
 3status: test
 4description: Detects execution of network scanning and reconnaisance tools. These tools can be used for the enumeration of local or remote network services for example.
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md
 7    - https://github.com/projectdiscovery/naabu
 8    - https://github.com/Tib3rius/AutoRecon
 9author: Alejandro Ortuno, oscd.community, Georg Lauenstein (sure[secure])
10date: 2020/10/21
11modified: 2023/10/25
12tags:
13    - attack.discovery
14    - attack.t1046
15logsource:
16    category: process_creation
17    product: linux
18detection:
19    selection_netcat:
20        Image|endswith:
21            - '/nc'
22            - '/ncat'
23            - '/netcat'
24            - '/socat'
25    selection_network_scanning_tools:
26        Image|endswith:
27            - '/autorecon'
28            - '/hping'
29            - '/hping2'
30            - '/hping3'
31            - '/naabu'
32            - '/nmap'
33            - '/nping'
34            - '/telnet' # could be wget, curl, ssh, many things. basically everything that is able to do network connection. consider fine tuning
35    filter_main_netcat_listen_flag:
36        CommandLine|contains:
37            - ' --listen '
38            - ' -l '
39    condition: (selection_netcat and not filter_main_netcat_listen_flag) or selection_network_scanning_tools
40falsepositives:
41    - Legitimate administration activities
42level: low

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