Cruloader Malware Detection

This rule detects the Cruloader malware based on specific strings found within its binaries. The first rule, 'Loader_Cruloader_Strings', identifies the malware by looking for an RC4 key, a ROT13 charset, and the string "cruloader" itself. The second rule, 'Loader_Cruloader_Crypto', identifies the malware by looking for specific byte patterns indicative of its cryptographic routines, likely related to its RC4 implementation.