Suspicious Package Installed - Linux

 1title: Suspicious Package Installed - Linux
 2id: 700fb7e8-2981-401c-8430-be58e189e741
 3status: test
 4description: Detects installation of suspicious packages using system installation utilities
 5references:
 6    - https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2023-01-03
 9tags:
10    - attack.defense-evasion
11    - attack.t1553.004
12logsource:
13    product: linux
14    category: process_creation
15detection:
16    selection_tool_apt:
17        Image|endswith:
18            - '/apt'
19            - '/apt-get'
20        CommandLine|contains: 'install'
21    selection_tool_yum:
22        Image|endswith: '/yum'
23        CommandLine|contains:
24            - 'localinstall'
25            - 'install'
26    selection_tool_rpm:
27        Image|endswith: '/rpm'
28        CommandLine|contains: '-i'
29    selection_tool_dpkg:
30        Image|endswith: '/dpkg'
31        CommandLine|contains:
32            - '--install'
33            - '-i'
34    selection_keyword:
35        CommandLine|contains:
36            # Add more suspicious packages
37            - 'nmap'
38            - ' nc'
39            - 'netcat'
40            - 'wireshark'
41            - 'tshark'
42            - 'openconnect'
43            - 'proxychains'
44    condition: 1 of selection_tool_* and selection_keyword
45falsepositives:
46    - Legitimate administration activities
47level: medium