Cybersecurity researchers have flagged a new ransomware family called Ymir that was deployed in an attack two days after systems were compromised by a stealer malware called RustyStealer."Ymir ransomware introduces a unique combination of technical features and tactics that enhance its effectiveness," Russian cybersecurity vendor Kaspersky said."Threat actors leveraged an unconventional blend of memory management functions – malloc, memmove, and memcmp – to execute malicious code directly in the memory. This approach deviates from the typical sequential execution flow seen in widespread ransomware types, enhancing its stealth capabilities."