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Suspicious FromBase64String Usage On Gzip Archive - Process Creation (d75d6b6b-adb9-48f7-824b-ac2e786efe1f)

Detects attempts of decoding a base64 Gzip archive via PowerShell. This technique is often used as a method to load malicious content into memory afterward.

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Cluster A	Galaxy A	Cluster B	Galaxy B	Level
	Clear Attack Pattern Sigma-Rules		Clear Attack Pattern	Clear 1 2
Suspicious FromBase64String Usage On Gzip Archive - Process Creation (d75d6b6b-adb9-48f7-824b-ac2e786efe1f)	Sigma-Rules	Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	1
Data Encoding - T1132 (cc7b8c4e-9be0-47ca-b0bb-83915ec3ee2f)	Attack Pattern	Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	2