Inside LuffichCloud: How Malware Harvested 1,766 Passwords

In August 2026, HEROIC's threat intelligence analysts identified a stealer log file uploaded to Telegram by an anonymous user, tracked as "LuffichCloud FREE LOGS uploaded by a Telegram User." The file, offered for free, contains 1,766 records covering endpoints, email addresses, API hosts, and plaintext passwords, along with the login URLs those credentials belong to.

Why This Is Dangerous

Labeling a stealer log "free" is a common way for a seller to build a reputation and attract buyers for future, larger releases. Giving this data away doesn't make it any less usable. It still hands out 1,766 sets of plaintext passwords, matching email addresses, and the exact login URLs and API hosts each credential connects to, all ready for anyone who downloads the file.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each credential pair

Why This Matters

Because this is a stealer log, the credentials likely came from devices actively infected with malware, which means the passwords may still be in use. A free file spreads faster and wider than a paid one, so if your information is among these 1,766 records, more people may have already seen it than with a typical paid leak. Reused passwords turn this exposure into a doorway for account takeover, financial fraud, or identity theft.

How Stealer Logs Work

Stealer logs are produced by malware that infects a device, often through a fake download or cracked software, and then quietly collects saved passwords, cookies, and autofill data from the browser. That data gets bundled into a log file and distributed, sometimes for a price and sometimes for free, as a way to promote the seller's other, less generous offerings on platforms like Telegram.

Check If You Are Affected

A free leak is still a real leak. HEROIC's free breach scanner searches more than 400 billion exposed records, including this leak, so you can find out in seconds if your credentials are part of it and update your passwords before someone else uses them.