APT73
Also known as Eraleig
APT73 is a ransomware group that has publicly identified 12 victims and launched its data leak site on April 25th. The DLS bears a striking resemblance to that of LockBit, likely to leverage LockBit's reputation and attract potential affiliates. The rationale for this design mimicry is unclear, but it may be intended to signal operational parity with LockBit to inspire trust among low-level criminals. APT73 was formed by an alleged former LockBit affiliate following law enforcement's "Operation Cronos" in February 2024.
CVEs in recent coverage
No CVEs named alongside this actor in the last 90 days.
Recent victims
No leak-site posts on record for this group.
Recent activity
- an initial access broker named 'APT73' is advertising live access to a large TV channel group’s internal infrastructure, including Active Directory domamastodon · Oct 29, 2026
References
From the MISP threat-actor galaxy, MITRE ATT&CK and RansomLook (CC BY 4.0). Activity is any post or advisory Watch Floor collected that names the actor or one of its aliases.