In a recent incident response case, Kaspersky researchers discovered a new and notable ransomware family in active use by the attackers, which they named “Ymir”.
The artifact has interesting features for evading detection, including a large set of operations performed in memory with the help of the malloc, memmove and memcmp function calls. In the case the researchers analyzed, the attacker was able to gain access to the system via PowerShell remote control commands. After that, the attacker installed multiple tools for malicious actions, such as Process Hacker and Advanced IP Scanner. Eventually, after reducing system security, the adversary ran Ymir to achieve their goals.
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Source: Kaspersky
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