The BlackHat_Cloud 377 Dump: 1.1 Million Stolen Login Credentials Hit the Dark Web

HEROIC analysts discovered a stealer log file circulating on Telegram in July 2025, uploaded by an anonymous user operating under the BlackHat_Cloud 377 handle. The file contained 1,124,114 records harvested from infected machines, with each record including an email address, a plaintext password, and the URL of the site or service the credentials belong to. This type of exposure is particularly serious because the data was pulled directly off victims' computers by malicious software, meaning the passwords were captured at the exact moment they were typed or stored.

Why This Stealer Log Puts Real People at Risk

Unlike a standard database breach where passwords might be hashed and difficult to crack, every single password in the BlackHat_Cloud 377 file is in plaintext. That means anyone who downloads this file can see your password directly, no guessing required. Attackers can take an email and password pair, walk straight into your account on any site you reuse that password, and do it at scale using automated tools. With URLs included, they already know exactly which services you were logged into. This is credential stuffing at its most efficient, and your bank, email, and social accounts are all potential targets.

What the BlackHat_Cloud 377 Log Exposed

• Email Addresses
• Plaintext Passwords
• URLs (the specific sites and services the credentials belong to)

Because the data was taken directly from infected endpoints, this is not a single-site breach. The records span hundreds or thousends of different services, meaning exposure could affect your accounts almost anywhere online.

Why a Telegram-Distributed Stealer Log Is Especially Dangerous

Telegram has become a primary distribution channel for stolen credential files because it is fast, largely anonymous, and accessible to anyone. When a file like this is uploaded to a public or semi-private Telegram channel, it can be downloaded by hundreds or thousands of bad actors within hours. There is no central gatekeeper, no takedown mechanism that acts quickly enough. By the time researchers identifyed this file, it had already been in circulation long enough to cause real damage. The people whose credentials are in this file may have no idea their accounts are already being tested.

How Stealer Logs Harvest Credentials From Your Device

Stealer logs are the output of a category of malware called information stealers, or infostealers. These programs run silently on a victim's computer after being installed through a malicious download, a phishing email, a fake software crack, or a compromised website. Once running, they scan the device for saved passwords in browsers, autocomplete data, session cookies, and other stored credentials. All of this is packaged into a structured file and sent to the attacker's server. The victim typically notices nothing. The resulting file, called a stealer log, is then sold, traded, or freely distributed on dark web forums and Telegram channels. The BlackHat_Cloud 377 upload fits this pattern exactly, with records that map directly to real browsing sessions on real devices.

Check If Your Accounts Were Exposed in the BlackHat_Cloud 377 Leak

If your email address appears in this file, your plaintext password for one or more services is already in the hands of threat actors. HEROIC's free breach scanner searches across more than 400 billion records, including stealer log files like this one, and can tell you in seconds whether your email has been compromised. Don't wait for your account to be taken over to find out. Run a free search at heroic.com and take action before somone else does.