Dark Web Intel: 5,854 Plaintext Credentials From the Suncloud 500 10-9 Leak

HEROIC threat intelligence analysts identified and verified a stealer log file distributed under the name Suncloud 500 10-9, uploaded to Telegram in September 2023. The file contained 5,854 records harvested from compromised endpoints, each entry pairing an email address with a plaintext password and a URL showing exactly which service the victim was signed into. This type of data circulates widely on Telegram before making its way to darker corners of the web, and by the time it is indexed in a breach database, it has often already been used.

Why This Is Dangerous

The Suncloud 500 10-9 file is part of a broader class of stealer log batches distributed by organized threat actors operating on Telegram. The "500" in the name likely refers to a batch size or collection target, suggesting this was one of many files produced by the same campaign.

With nearly 6,000 records containing live, plaintext passwords, this file gives attackers direct access to real accounts. No cracking, no waiting. The URLs included in each record act as a roadmap, telling the attacker exactly which services to target first, whether that's a corporate VPN, an email provider, or a banking portal.

What Was Exposed

• Email Addresses - account identifiers exposed for all 5,854 victims
• Plaintext Passwords - unencrypted passwords, ready to use without any additional steps
• URLs - the specific services and platforms each victim was using at time of compromise

Why This Matters for Real People

Stealer log data from Telegram campaigns is among the most actively traded material on criminal forums. The Suncloud 500 10-9 batch, containing plaintext passwords, is exactly the kind of file that feeds large-scale credential stuffing operations.

Once attackers have a working email and password, they run automated tools against dozens of websites simultaneously. Any site where the victim reused that password is at risk. This leads to account takeovers on shopping sites, streaming services, corporate systems, and financial platforms. Identity theft and financial fraud are the most common and serious outcomes.

Victims typically don't realise their credentials are circulating until they are locked out of an account or notice unauthorised transactions. By that point, the damage may have occured across multiple platforms.

How Telegram Stealer Log Distribution Works

Stealer logs don't start on Telegram. They begin on infected devices, harvested by infostealer malware that quietly runs in the background. The malware captures passwords saved in browsers, session cookies, and credentials entered on login pages, then packages everything into a compressed log file and transmits it to the attacker's collection server.

From there, the operator sorts the logs by volume or quality, packages them into batches, and uploads them to private or public Telegram channels. Some batches are sold. Others, like Suncloud 500 10-9, are shared freely to build reputation or distribute access to other criminal groups. Once posted, the data recieved immediate distribution to everyone watching the channel.

This is why Telegram-sourced stealer logs are so damaging. They move from infection to criminal hands in hours, and they spread fast.

Check If You Were Affected

If you were using online services in mid to late 2023 and your device may have been infected, your credentials could be in this file. HEROIC's breach database contains over 400 billion records, including verified stealer logs from Telegram, dark web forums, and other criminal distribution channels.

Run a free breach scan at HEROIC to see if your email appears in the Suncloud 500 10-9 file or any of the thousands of other breaches in our database.