Cicada3301 Ransomware Detection

This YARA rule detects the Cicada3301 ransomware by identifying specific byte patterns (signatures) within executable files. The rule looks for distinct code sequences related to enumerating valid drives, recursively collecting files, and encrypting files. It includes multiple parts for file collection and two versions of file encryption routines, indicating a robust detection mechanism for different variants or stages of the ransomware's operation. The presence of these patterns strongly suggests the file is a Cicada3301 ransomware sample.