LockBit Ransomware Gang Attacks University Prep School

The LockBit ransomware gang has attacked University Prep School. University Prep School is an elementary school in Denver that focuses on preparing students for college. LockBit posted University Prep School to its data leak site on August 29th but provided no further details.

What is LockBit?

LockBit is a RaaS (Ransomware-as-a-Service) that has been active since 2019 and is enabled with security tool evasion capabilities and an extremely fast encryption speed. LockBit is noted for using a triple extortion model where the victim may also be asked to purchase their sensitive information in addition to paying the ransom demand for decrypting systems. LockBit employs publicly available file sharing services and a custom tool dubbed Stealbit for data exfiltration.

Recent Activities and Capabilities

LockBit was by far the most active attack group in 2022 and continued to be one of the top attack groups in Q1 of 2023, despite being bested in sheer volume by the Clop ransomware gang who surged in Q1. LockBit demanded ransoms in excess of $50 million in 2022. The group continues to improve their RaaS platform and introduced LockBit 3.0 in June of 2022. The latest version incorporates advanced anti-analysis features and is a threat to both Windows and Linux systems. LockBit 3.0 is modular and configured with multiple execution options that direct the behavior of the ransomware on the affected systems.

LockBit employs a custom Salsa20 algorithm to encrypt files. LockBit takes advantage of remote desktop protocol (RDP) exploitation for most infections, and spreads on the network by way of Group Policy Objects and PsExec using the Server Message Block (SMB) protocol.

Target and Affiliate Program

LockBit tends to target larger enterprises across any industry vertical with the ability to pay high ransom demands, but also tends to favor Healthcare targets. LockBit is a very well-run affiliate program and has a great reputation amongst the affiliate (attacker) community for the maturity of the platform as well as for offering high payouts of as much as 75% of the attack proceeds. LockBit is known to employ multiple extortion techniques including data exfiltration to compel payment.