“A Sicarii ransomware represents a nightmare scenario where traditional ransomware response strategies fail entirely,” said Agnidipta Sarkar, chief evangelist at ColorTokens. “As no decryptor can reconstruct the discarded private keys, enterprises will stare at ‘assume total data destruction,’ amplifying financial, operational, and reputational damage.”
Absence of a decryptor-based recovery forces organizations to plan for complete recovery through backups and alternate operational restoration methods, changing the cost-benefit analysis for them. This also heightens the importance of pre-existing, secure backup infrastructure and rapid isolation. Halcyon urged organizations to focus on immediate containment and restoration rather than ransom-based recovery. Affected systems should be isolated, the scope of infection identified, and operations restored only from known-good, offline, or immutable backups.
“Enterprises must invest in proactive zero trust micro-segmentation that is designed to be adopted in hours, leveraging existing EDR, agents, agentless mechanisms to contain threats at the initial access point, preventing encryption from spreading,” Sarkar added.
