Powershell IEX Download In Base64
powershell IEX((new-object net.webclient).downloadstring( string in base64 form
Sigma rule (View on GitHub)
1title: Powershell IEX Download In Base64
2status: experimental
3description: powershell IEX((new-object net.webclient).downloadstring( string in base64 form
4author: Joe Security
5date: 2019-10-23
6id: 200009
7threatname:
8behaviorgroup: 1
9classification: 8
10mitreattack:
11
12logsource:
13 category: process_creation
14 product: windows
15detection:
16 selection:
17 CommandLine:
18 - '*powershell*SUVYKChuZXctb2JqZWN0IG5ldC53ZWJjbGllbnQpLmRvd25sb2Fkc3RyaW5nK*'
19 condition: selection
20level: critical