title: Microsoft Binary Github Communication
author: Michael Haag (idea), Florian Roth (rule)
date: 2017/08/24
description: Detects an executable in the Windows folder accessing github.com
detection:
    SELECTION_1:
        EventID: 3
    SELECTION_2:
        Initiated: 'true'
    SELECTION_3:
        DestinationHostname: '*.github.com'
    SELECTION_4:
        DestinationHostname: '*.githubusercontent.com'
    SELECTION_5:
        Image: C:\Windows\\*
    condition: (SELECTION_1 and SELECTION_2 and (SELECTION_3 or SELECTION_4) and SELECTION_5)
falsepositives:
- Unknown
- '@subTee in your network'
id: 635dbb88-67b3-4b41-9ea5-a3af2dd88153
level: high
logsource:
    category: network_connection
    product: windows
modified: 2020/08/24
references:
- https://twitter.com/M_haggis/status/900741347035889665
- https://twitter.com/M_haggis/status/1032799638213066752
- https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/data/module_source/exfil/Invoke-ExfilDataToGitHub.ps1
status: experimental
tags:
- attack.lateral_movement
- attack.t1105
- attack.exfiltration
- attack.t1567.001
- attack.t1048
yml_filename: sysmon_win_binary_github_com.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/network_connection