Fivehands ransomware group
Fivehands 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.
Who they are
FiveHands is a ransomware family first observed in January 2021, believed to be a successor to the HelloKitty ransomware variant. It operates under a Ransomware-as-a-Service (RaaS) model and uses the double-extortion tactic, encrypting files while threatening to leak stolen data via a Tor-based site. FiveHands is written in C# and leverages the NTRUEncrypt algorithm for file encryption alongside Curve25519 for key exchange. The ransomware is commonly deployed via Malwarebytes SombRAT or Cobalt Strike beacons after initial compromise, often gained through exploitation of vulnerable VPNs, phishing, or compromised credentials. FiveHands has targeted organizations in healthcare, finance, and manufacturing across North America, Europe, and Asia.
Current status
Fivehands'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
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 Fivehands 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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