Cloudflared Tunnel Connections Cleanup

calendar Dec 21, 2023 · attack.command_and_control attack.t1102 attack.t1090 attack.t1572  ·
Share on: linkedin copy

Detects execution of the "cloudflared" tool with the tunnel "cleanup" flag in order to cleanup tunnel connections.

Sigma rule (View on GitHub)

 1title: Cloudflared Tunnel Connections Cleanup
 2id: 7050bba1-1aed-454e-8f73-3f46f09ce56a
 3status: experimental
 4description: Detects execution of the "cloudflared" tool with the tunnel "cleanup" flag in order to cleanup tunnel connections.
 5references:
 6    - https://github.com/cloudflare/cloudflared
 7    - https://developers.cloudflare.com/cloudflare-one/connections/connect-apps
 8author: Nasreddine Bencherchali (Nextron Systems)
 9date: 2023/05/17
10modified: 2023/12/21
11tags:
12    - attack.command_and_control
13    - attack.t1102
14    - attack.t1090
15    - attack.t1572
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection:
21        CommandLine|contains|all:
22            - ' tunnel '
23            - 'cleanup '
24        CommandLine|contains:
25            - '-config '
26            - '-connector-id '
27    condition: selection
28falsepositives:
29    - Legitimate usage of Cloudflared.
30level: medium

References

Related rules

to-top