Inside BabaCloudLogs: How Malware Harvested 35,501 Passwords

Inside BabaCloudLogs: 35,501 Passwords Harvested by Malware

HEROIC analysts found a stealer log file labeled "BabaCloudLogs 501 Cloud Logs" that a Telegram user uploaded on September 20, 2025. The file contained 35,501 records, each pairing an email address with a plaintext password and the URL of the login page it belongs to. This is one of the larger single uploads HEROIC has tracked from this source, and every record in it is ready to use.

Why This Is Dangerous

Because these passwords were exposed in plaintext, there is no encryption for an attacker to break. Anyone who obtains this file can pair each email, password, and URL and log in directly, with no cracking or guesswork required.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the associated login pages

Why This Matters

A dataset of 35,501 records gives attackers substantial raw material for credential stuffing, where automated tools test each stolen email and password pair against other popular sites. Anyone who reused this password elsewhere faces the risk of account takeover, identity theft, or financial fraud.

How Stealer Logs Work

A stealer log like this one comes from infostealer malware that infects a device through a malicious download, cracked software, or a phishing link. Once installed, it quietly harvests saved browser passwords, autofill data, and session details, then bundles everything into a single log file. These files are commonly shared or sold on Telegram channels shortly after collection, which is exactly how BabaCloudLogs went public. The larger the log, the more devices the malware likely reached before being detected.

Check If You Are Affected

Want to know if your login is part of this leak or another one like it? HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records. Run a free scan today and change any password you have reused across accounts.