12,112 Passwords From the LuffichCloud 5 Stealer Log Hit the Dark Web

HEROIC security analysts discovered the LuffichCloud 5 breach on May 15, 2023, when a Telegram user uploaded a stealer log file containing 12,112 stolen records. The dataset includes email addresses, plaintext passwords, and URLs collected from devices infected with credential-stealing malware. The "5" in the name marks this as the fifth release in a series, indicating a persistent threat actor who has repeatedly compiled and distributed stolen credentials through the same Telegram channel. Researchers beleive this series-based operation represents a systematic, ongoing criminal enterprise rather than a single opportunistic leak, meaning every victim in this file has been targeted by an actor with demonstrated long-term intent.

Why the LuffichCloud 5 Breach Is Dangerous

The LuffichCloud 5 file carries a compounded threat: not only do its 12,112 plaintext credentials give criminals immediatley usable login data, but the serial nature of the LuffichCloud releases suggests the threat actor behind it has built an established distribution network. Criminal buyers who trust a known supplier are more likely to actively deploy the credentials, not just stockpile them. For anyone in this dataset, that means a higher-than-average chance of active account takeover attempts, not just passive exposure.

What Was Exposed

• Email Addresses: The foundation of each victim's digital identity, connecting every online account they own and making it the primary target criminals pursue after obtaining stolen credentials.
• Plaintext Passwords: Captured in fully readable form with no encryption or hashing, these passwords give criminals direct, immediate access to accounts without any additional technical steps or tools.
• URLs: The specific web addresses captured alongside each login record, revealing exactly which platforms and services each victim was using and allowing attackers to prioritize high-value targets like banking and email first.

Why This Matters

With 12,112 credential sets in circulation for over three years, the LuffichCloud 5 data has had ample time to reach a wide criminal audience. Automated credential stuffing tools allow criminals to test stolen email and password pairs against hundreds of websites simultaneously, and because password reuse is so widespread, a single stolen credential frequently unlocks multiple accounts. Victims whose LuffichCloud 5 passwords are still active anywhere online may find themselves locked out of accounts or facing fraudulent charges with no warning. The damage from account takeovers often occured silently, discovered only after funds are drained or identities are misused.

How Stealer Log Breaches Work

LuffichCloud 5 is a stealer log, a credential dataset produced by malware that infects individual victims' devices rather than attacking a company's servers. The malware harvests every saved password, browser session cookie, and autofill credential stored on the device, then transmits that data to the attacker. Victims typically experience no visible symptoms and recieve no notification during or after the infection. The attacker operating as LuffichCloud then compiles the harvested credentials into numbered releases and distributes them through Telegram, creating a repeatable criminal supply chain for stolen identity data that has now produced at least five documented releases.

Check If You Are Affected

HEROIC's free breach scanner checks your email address against more than 400 billion exposed records, including all known LuffichCloud releases and thousands of other stealer log collections. The scan takes only seconds and costs nothing. Visit heroic.com right now to find out if your credentials are in the LuffichCloud 5 leak and take action before criminals use them against you.