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Babylockerkz ransomware group

Babylockerkz is one of the extortion operations we watch continuously. This page covers what is known about the group and the current state of its leak site.

Leak site statusOfflinenot answering
Tracked sinceno dated record
Last activitynothing recorded
Sectors observednone stated

Who they are

BabyLockerKZ is a variant of MedusaLocker ransomware, first observed in late 2023. It operates under a double‑extortion model, combining file encryption with data exfiltration and extortion. Technically, it reuses MedusaLocker’s AES + RSA‑2048 hybrid encryption, appends the .hazard file extension to encrypted files, and includes a unique autorun registry key (“BabyLockerKZ”) alongside dedicated public/private key data inserted into registry values. Initial access is achieved through opportunistic methods like RDP compromises, with lateral movement facilitated by compromised credentials and tools such as Mimikatz. The variant employs a custom toolkit codenamed paid_memes, which includes tools like "Checker" for scanning credentials, facilitating automation, and bridging toolsets for further exploitation. Starting late 2022, its operators have compromised over 100 organizations per month, initially targeting European victims before shifting toward Latin America in 2023.

Descriptions are compiled from public reporting and vendor research. They describe how a group has historically operated and can lag its current behaviour; the status and timings above are our own.

Current status

Babylockerkz's leak site is not answering. Sites go dark for infrastructure trouble, a deliberate quiet period, or a takedown, and a good number return weeks later under the same name, so the entry stays on the list either way.

Which organisations this group has named, and when, is part of the SINON platform rather than this page. Create an account to search it, or to be told automatically if a name you care about turns up.

Sectors targeted

Industries this group has been observed going after, most common first.

This group does not state an industry on its site, so we have nothing reliable to report. Most crews are opportunistic rather than sector-specific in any case — they hit what they can reach.

Watching for your name

If Babylockerkz posts your company, a supplier or a subsidiary, you want to hear it from us rather than from a journalist. SINON checks these sites continuously and alerts on the names you give it.

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