Linux Package Uninstall

Detects linux package removal using builtin tools such as "yum", "apt", "apt-get" or "dpkg".

Sigma rule (View on GitHub)

 1title: Linux Package Uninstall
 2id: 95d61234-7f56-465c-6f2d-b562c6fedbc4
 3status: test
 4description: Detects linux package removal using builtin tools such as "yum", "apt", "apt-get" or "dpkg".
 5references:
 6    - https://sysdig.com/blog/mitre-defense-evasion-falco
 7    - https://www.tutorialspoint.com/how-to-install-a-software-on-linux-using-yum-command
 8    - https://linuxhint.com/uninstall_yum_package/
 9    - https://linuxhint.com/uninstall-debian-packages/
10author: Tuan Le (NCSGroup), Nasreddine Bencherchali (Nextron Systems)
11date: 2023-03-09
12tags:
13    - attack.defense-evasion
14    - attack.t1070
15logsource:
16    product: linux
17    category: process_creation
18detection:
19    selection_yum:
20        Image|endswith: '/yum'
21        CommandLine|contains:
22            - 'erase'
23            - 'remove'
24    selection_apt:
25        Image|endswith:
26            - '/apt'
27            - '/apt-get'
28        CommandLine|contains:
29            - 'remove'
30            - 'purge'
31    selection_dpkg:
32        Image|endswith: '/dpkg'
33        CommandLine|contains:
34            - '--remove '
35            - ' -r '
36    selection_rpm:
37        Image|endswith: '/rpm'
38        CommandLine|contains: ' -e '
39    condition: 1 of selection_*
40falsepositives:
41    - Administrator or administrator scripts might delete packages for several reasons (debugging, troubleshooting).
42level: low

References

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