PowerShell Web Download

calendar Nov 2, 2023 · attack.command_and_control attack.execution attack.t1059.001 attack.t1105  ·
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Detects suspicious ways to download files or content using PowerShell

Sigma rule (View on GitHub)

 1title: PowerShell Web Download
 2id: 6e897651-f157-4d8f-aaeb-df8151488385
 3status: test
 4description: Detects suspicious ways to download files or content using PowerShell
 5references:
 6    - https://github.com/VirtualAlllocEx/Payload-Download-Cradles/blob/88e8eca34464a547c90d9140d70e9866dcbc6a12/Download-Cradles.cmd
 7author: Florian Roth (Nextron Systems)
 8date: 2022/03/24
 9modified: 2023/01/05
10tags:
11    - attack.command_and_control
12    - attack.execution
13    - attack.t1059.001
14    - attack.t1105
15logsource:
16    product: windows
17    category: process_creation
18detection:
19    selection:
20        CommandLine|contains:
21            - '.DownloadString('
22            - '.DownloadFile('
23            - 'Invoke-WebRequest '
24            - 'iwr '
25    condition: selection
26falsepositives:
27    - Scripts or tools that download files
28level: medium

References

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