Files with locklock file extension can be encountered as renamed files affected by the LockLock ransomware.
LOCKLOCK file extension - LockLock ransomware affected data
What is locklock file? How to open locklock files?
File type specification:
The locklock file extension seems to be recently related to a ransomware type targeting users through e-mail and Skype spam campaigns.
It looks like the affected files are encrypted using AES-256 algorithm.