Potentially Suspicious Named Pipe Created Via Mkfifo

 1title: Potentially Suspicious Named Pipe Created Via Mkfifo
 2id: 999c3b12-0a8c-40b6-8e13-dd7d62b75c7a
 3related:
 4    - id: 9d779ce8-5256-4b13-8b6f-b91c602b43f4
 5      type: derived
 6status: test
 7description: Detects the creation of a new named pipe using the "mkfifo" utility in a potentially suspicious location
 8references:
 9    - https://dev.to/0xbf/use-mkfifo-to-create-named-pipe-linux-tips-5bbk
10    - https://www.mandiant.com/resources/blog/barracuda-esg-exploited-globally
11author: Nasreddine Bencherchali (Nextron Systems)
12date: 2023/06/16
13tags:
14    - attack.execution
15logsource:
16    category: process_creation
17    product: linux
18detection:
19    selection:
20        Image|endswith: '/mkfifo'
21        # Note: Add more potentially suspicious locations
22        CommandLine|contains: ' /tmp/'
23    condition: selection
24falsepositives:
25    - Unknown
26level: medium

References

• Use `mkfifo` to create named pipe - Linux Tips

  

  We can use mkfifo or mknod command to create a named pipe. A pipe is a structure which one end can se...

  
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• Barracuda ESG Zero-Day Vulnerability (CVE-2023-2868) Exploited Globally by Aggressive and Skilled Actor, Suspected Links to China | Mandiant

  

  On May 23, 2023, Barracuda announced that a zero-day vulnerability (CVE-2023-2868) in the Barracuda Email Security Gateway (ESG) had been exploited in-the-wild as early as October 2022 and that the...

  
  Read More

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