The MARVEL_CLOUD Dump: 3,226 Stolen Email and Password Pairs Hit Telegram

The MARVEL_CLOUD Stealer Log: What Was Taken and Who Is at Risk

In July 2023, HEROIC analysts indexed a stealer log batch posted to Telegram under the name MARVEL_CLOUD. The file contained 3,226 records stripped from compromised endpoints, each including an email address, a plaintext password, and a URL captured during an active browsing session. The MARVEL_CLOUD branding follows a pattern of cloud-branded Telegram channels that distribute stolen credentials as a service to criminal subscribers.

What Attackers Do With This Kind of Data

A file pairing 3,226 email addresses with plaintext passwords and URLs is a ready-made attack toolkit. Credential stuffing tools can process this list in minutes, automatically testing each combination against popular platforms. The URL data eliminates guesswork. Attackers already know which email provider you use, which bank's login page appeared in your session history, and which subscription services you access regularly. That context turns a simple password list into a targeted attack plan.

What Was Exposed in the MARVEL_CLOUD File

• Email addresses linked to compromised device sessions
• Plaintext passwords captured directly from browser credential stores
• URLs from active sessions showing which platforms and services each victim used

The MARVEL_CLOUD Leak: Why Scale and Plaintext Matter Together

Three thousand two hundred and twenty-six records is not a trivial number. Each one represents a person whose device was infected by infostealer malware. Each plaintext password in the file requires zero additional work from an attacker. There is no hash to crack, no encryption to break. The credential is immediately usable.

When victims reuse passwords across multiple platforms, a single entry in this file can unlock email, social media, cloud storage, and financial accounts simultaneously. Recieve an account takeover notification on one platform and there is a good chance the same credentials are being tested on a dozen others at the same moment.

The MARVEL_CLOUD Leak: How Telegram Cloud Channels Operate

Cloud-branded Telegram channels like MARVEL_CLOUD typically aggregate stealer logs from multiple infostealer campaigns. The operator collects log files from infected machines or buys them from malware operators, then distributes them to subscribers who use the data for credential stuffing, account takeover, and identity fraud. The channel branding creates a recognizable identity in criminal communities, which attracts subscribers and builds a reliable distribution network.

Seperate channels sometimes cross-post the same batches, meaning a file like MARVEL_CLOUD may have appeared on multiple Telegram channels simultaneously. The wider the distribution, the more threat actors who had access to these 3,226 records. Each new subscriber is another potential attacker testing your credentials. The URL data stored in these logs occured during real sessions and reflects real account activity from real people.

Check If the MARVEL_CLOUD Leak Exposed Your Email

HEROIC's breach database covers over 400 billion records including Telegram stealer log distributions like the MARVEL_CLOUD batch. If your email adress appeared in this file or any associated cloud channel posting, HEROIC's free scanner will find it. Scan now and understand exactly what credentials of yours have been circulating since July 2023.