Sigma rule: Suspicious Package Installed - Linux

Rule

Title

Suspicious Package Installed - Linux

Status

test

Level

medium

Author

Nasreddine Bencherchali (Nextron Systems)

Date

2023-01-03

Modified

2026-01-01

File

rules/linux/process_creation/proc_creation_lnx_install_suspicious_packages.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects installation of suspicious packages using system installation utilities

Log source

product

linux

category

process_creation

Detection

selection_tool_apt:
    Image|endswith:
        - '/apt'
        - '/apt-get'
    CommandLine|contains: 'install'
selection_tool_yum:
    Image|endswith: '/yum'
    CommandLine|contains:
        - 'localinstall'
        - 'install'
selection_tool_rpm:
    Image|endswith: '/rpm'
    CommandLine|contains: '-i'
selection_tool_dpkg:
    Image|endswith: '/dpkg'
    CommandLine|contains:
        - '--install'
        - '-i'
selection_keyword:
    CommandLine|contains:
        # Add more suspicious packages
        - 'nmap'
        - ' nc'
        - 'netcat'
        - 'wireshark'
        - 'tshark'
        - 'openconnect'
        - 'proxychains'
        - 'socat'
condition: 1 of selection_tool_* and selection_keyword

False positives (as the rule lists them)

• Legitimate administration activities

Tags

• attack.defense-impairment
• attack.t1553.004

MITRE ATT&CK ids this rule names

• T1553.004

References

• https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/process_creation/proc_creation_lnx_install_suspicious_packages.yml