Introduction
CryLock is a ransomware variant that emerged around April 2020, evolving from the Cryakl (Fantomas) ransomware family. It follows a semi-affiliate model, offering customizable options for partners—such as variable encryption routines, network scanning for lateral movement, shadow copy deletion, and process termination—and flexible delivery methods. During encryption, CryLock renames files to include the developer email, a unique victim ID, and a randomized three-letter extension. Victims typically encounter a countdown timer in a pop-up ransom message that warns about escalating ransom costs and potential loss of decryption capabilities.
Activities and Tactics
Information pending cataloguing.
Notable Campaigns
Information pending cataloguing.
Tactics, Techniques, and Procedures (TTPs)
Information pending cataloguing.
Notable Indicators of Compromise (IOCs)
No curated IOCs are currently published for this actor. This section will be updated when stable, attributable indicators are available.
Malware and Tools
Information pending cataloguing.
Attribution and Evidence
Information pending cataloguing.
References
References pending cataloguing.