YARA unknown stable yara

IsPacked [packers]

Entropy Check

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Detection Logic

// MZ signature at offset 0 and ...
		uint16(0) == 0x5A4D and
		// ... PE signature at offset stored in MZ header at 0x3C
		uint32(uint32(0x3C)) == 0x00004550 and
		math.entropy(0, filesize) >= 7.0

Field Validations

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