sigmamediumHunting

Suspicious Git Clone - Linux

Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious

MITRE ATT&CK

T1593.003

reconnaissance

Detection Query

selection_img:
  Image|endswith: /git
  CommandLine|contains: " clone "
selection_keyword:
  CommandLine|contains:
    - exploit
    - Vulns
    - vulnerability
    - RCE
    - RemoteCodeExecution
    - Invoke-
    - CVE-
    - poc-
    - ProofOfConcept
    - proxyshell
    - log4shell
    - eternalblue
    - eternal-blue
    - MS17-
condition: all of selection_*

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2023-01-03

Data Sources

linuxProcess Creation Events

Platforms

linux

References

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

Tags

attack.reconnaissanceattack.t1593.003

Raw Content

title: Suspicious Git Clone - Linux
id: cfec9d29-64ec-4a0f-9ffe-0fdb856d5446
status: test
description: Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious
references:
    - https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-03
modified: 2023-01-05
tags:
    - attack.reconnaissance
    - attack.t1593.003
logsource:
    category: process_creation
    product: linux
detection:
    selection_img:
        Image|endswith: '/git'
        CommandLine|contains: ' clone '
    selection_keyword:
        CommandLine|contains:
            # Add more suspicious keywords
            - 'exploit'
            - 'Vulns'
            - 'vulnerability'
            - 'RCE'
            - 'RemoteCodeExecution'
            - 'Invoke-'
            - 'CVE-'
            - 'poc-'
            - 'ProofOfConcept'
            # Add more vuln names
            - 'proxyshell'
            - 'log4shell'
            - 'eternalblue'
            - 'eternal-blue'
            - 'MS17-'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium