PUA - NPS Tunneling Tool Execution

 1title: PUA - NPS Tunneling Tool Execution
 2id: 68d37776-61db-42f5-bf54-27e87072d17e
 3status: test
 4description: Detects the use of NPS, a port forwarding and intranet penetration proxy server
 5references:
 6    - https://github.com/ehang-io/nps
 7author: Florian Roth (Nextron Systems)
 8date: 2022-10-08
 9modified: 2023-02-04
10tags:
11    - attack.command-and-control
12    - attack.t1090
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_img:
18        Image|endswith: '\npc.exe'
19    selection_cli_1:
20        CommandLine|contains|all:
21            - ' -server='
22            - ' -vkey='
23            - ' -password='
24    selection_cli_2:
25        CommandLine|contains: ' -config=npc'
26    selection_hashes:
27        # v0.26.10
28        - Hashes|contains:
29              - "MD5=AE8ACF66BFE3A44148964048B826D005"
30              - "SHA1=CEA49E9B9B67F3A13AD0BE1C2655293EA3C18181"
31              - "SHA256=5A456283392FFCEEEACA3D3426C306EB470304637520D72FED1CC1FEBBBD6856"
32        - md5: 'ae8acf66bfe3a44148964048b826d005'
33        - sha1: 'cea49e9b9b67f3a13ad0be1c2655293ea3c18181'
34        - sha256: '5a456283392ffceeeaca3d3426c306eb470304637520d72fed1cc1febbbd6856'
35    condition: 1 of selection_*
36falsepositives:
37    - Legitimate use
38level: high