Data Recovery Case File · Honest Limits & Ransomware · The Free Answer

The other face of the ransom genre: a broken family, a researcher-published decryptor, the members imaged before anything ran — and a photo archive unlocked without a penny reaching the attackers

His enquiry paired principle with priorities. The victim: his home two-bay Synology NAS — "all my files… were infected with the '0xxx' ransomware virus." The note he attached followed the genre's template: files renamed, a unique victim ID to quote, a three-figure sum in Bitcoin, three test files decrypted free as proof. His position: "I am not willing to pay the ransom." His question: "Is it possible for you to decrypt these files — mainly my photos, as I have my family photo archive there — and if so, what's your best possible cost?" The neighbouring case file in this volume gives this genre's hard answer — sound families don't fall, and firms guaranteeing otherwise usually pay the criminals for you. This page exists because the genre has a second face: families do get broken — flawed implementations cracked by researchers, keys released when operations fold — and when a victim's family is one of them, an honest laboratory's whole duty changes shape: identify precisely, protect the evidence, tell him the decryptor is free, and charge only for the careful work around it.

The decode: why some families break, and what honesty costs when they do

The two populations: ransomware families divide cleanly. The competent ones use sound cryptography soundly, and stay sealed until their keys leak — the neighbouring page's territory. The rest cut corners: flawed key generation, reused secrets, implementation blunders — and the security-research community, working with European police programmes, hunts exactly those flaws and publishes free decryptors when they find them. His family sat in the second population. Which means the honest market truth this page exists to put in writing: a firm could have taken his "best possible cost" question, named a handsome figure, run the free public tool behind closed doors, and pocketed the difference. The test of any recovery firm in this genre is whether they tell you which population you're in before they tell you a price.

Why procedure still matters when the answer is yes: a free decryptor is not a licence for improvisation. Decryptors are run against copies, never sole originals — a crash, a version mismatch, or a mis-identified family variant mid-run against the only copy converts good news into tragedy. And identification must be exact: families share renaming habits, and the wrong tool applied confidently does real harm. So the sequence held to the archive's oldest shape: image every member first, identify against the registries with the note and file samples, verify the decryptor's provenance and variant match — then unlock, on the images, with the originals untouched throughout.

The vector, closed: home NAS units meet this genre through internet-exposed services and stale firmware. His unit's remote access was found reachable from the world — the likely door — and the report closed it: services off or behind proper access, firmware current, and the archive's standing rule restated: a NAS is not a backup, and after ransomware, an offline copy is the only kind the next infection can't reach.

The recovery: unlocked on the copies, photos first

Both members were imaged write-blocked; the family and variant were confirmed against the registries; and the vetted researcher-published decryptor ran against the images — his stated priority honoured in the verification order: the family photograph archive decrypted first and checked the only way photographs should be, by opening them, years of them, before the rest of the estate followed. Everything came back; the renamed husks were retired; and the originals on the NAS were never asked to survive an experiment.

On the bench

Even a free cure is administered on copies. The NAS members were imaged individually on the Atola TaskForce 2, the array logic reassembled from the images, and the vetted public decryptor for this strain executed only against that reconstruction — the originals untouched in case the tool misbehaved. It didn't: the recovered keys unwound the encryption cleanly, and OSForensics closed the loop with hash-level verification across the decrypted estate, confirming file integrity before delivery. The invoice's most important line remained the one this page exists for: the decryptor itself, free, as it was to anyone.

The outcome

The photo archive and the full estate delivered decrypted and verified, on new media plus a fresh offline copy — with the honest cost structure his question deserved: the decryptor itself cost nothing, and was named as costing nothing; the fixed written figure, including VAT, covered the imaging, identification, safe decryption and verification work actually performed, under no-recovery-no-fee. Not a penny to the attackers, exactly as he'd resolved — and the ransom note filed where it belongs, in this archive, annotated.

Our case files are drawn from genuine enquiries received by our laboratory over the past ten years, anonymised to protect client confidentiality. Each one describes the diagnostic and recovery procedure our engineers apply to that fault, using the equipment listed.