Crysis
Crysis is a ransomware family referenced in the provided content as a notable predecessor and point of lineage for later ransomware operations. The content explicitly states that Phobos is a ransomware-as-a-service operation derived from the Crysis ransomware family, and also groups Crysis together with Dharma and Phobos in reporting on ransomware threats observed during holiday periods. Crysis is further cited as one of several ransomware families whose master decryption keys were released after shutdown, alongside TeslaCrypt and Shade. Based on the provided material, high-confidence attributes are that Crysis is ransomware, it is associated by lineage with Phobos, and it is commonly referenced in the combined naming convention Crysis/Dharma/Phobos. The content does not provide specific infection vectors, technical behavior, targeted sectors, platforms, or indicators of compromise for Crysis itself.
Hunt this family in your stack
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
Techniques & procedures
1 distinct technique documented for this family, organized by ATT&CK tactic.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Ransomware family referenced as the lineage/source family from which Phobos is derived.
Ransomware family/lineage referenced via the Crysis/Dharma/Phobos naming cluster as a common holiday-season threat.
Ransomware referenced as an example of a group releasing master decryption keys upon shutdown.
Ransomware referenced as an example where master decryption keys were released upon shutdown.
The version that knows your environment.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.