sigmamediumHunting

Potential COM Objects Download Cradles Usage - PS Script

Detects usage of COM objects that can be abused to download files in PowerShell by CLSID

MITRE ATT&CK

command-and-control

Detection Query

selection_1:
  ScriptBlockText|contains: "[Type]::GetTypeFromCLSID("
selection_2:
  ScriptBlockText|contains:
    - 0002DF01-0000-0000-C000-000000000046
    - F6D90F16-9C73-11D3-B32E-00C04F990BB4
    - F5078F35-C551-11D3-89B9-0000F81FE221
    - 88d96a0a-f192-11d4-a65f-0040963251e5
    - AFBA6B42-5692-48EA-8141-DC517DCF0EF1
    - AFB40FFD-B609-40A3-9828-F88BBE11E4E3
    - 88d96a0b-f192-11d4-a65f-0040963251e5
    - 2087c2f4-2cef-4953-a8ab-66779b670495
    - 000209FF-0000-0000-C000-000000000046
    - 00024500-0000-0000-C000-000000000046
condition: all of selection_*

Author

frack113

Created

2022-12-25

Data Sources

windowsps_script

Platforms

windows

References

Tags

attack.command-and-controlattack.t1105

Raw Content

title: Potential COM Objects Download Cradles Usage - PS Script
id: 3c7d1587-3b13-439f-9941-7d14313dbdfe
related:
    - id: 02b64f1b-3f33-4e67-aede-ef3b0a5a8fcf
      type: similar
status: test
description: Detects usage of COM objects that can be abused to download files in PowerShell by CLSID
references:
    - https://learn.microsoft.com/en-us/dotnet/api/system.type.gettypefromclsid?view=net-7.0
    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=57
author: frack113
date: 2022-12-25
tags:
    - attack.command-and-control
    - attack.t1105
logsource:
    product: windows
    category: ps_script
    definition: Script Block Logging must be enable
detection:
    selection_1:
        ScriptBlockText|contains: '[Type]::GetTypeFromCLSID('
    selection_2:
        ScriptBlockText|contains:
            - '0002DF01-0000-0000-C000-000000000046'
            - 'F6D90F16-9C73-11D3-B32E-00C04F990BB4'
            - 'F5078F35-C551-11D3-89B9-0000F81FE221'
            - '88d96a0a-f192-11d4-a65f-0040963251e5'
            - 'AFBA6B42-5692-48EA-8141-DC517DCF0EF1'
            - 'AFB40FFD-B609-40A3-9828-F88BBE11E4E3'
            - '88d96a0b-f192-11d4-a65f-0040963251e5'
            - '2087c2f4-2cef-4953-a8ab-66779b670495'
            - '000209FF-0000-0000-C000-000000000046'
            - '00024500-0000-0000-C000-000000000046'
    condition: all of selection_*
falsepositives:
    - Legitimate use of the library
level: medium