How SNOWCLOUD Malware Exposed 3,611,167 Stolen Passwords

HEROIC analysts identified a massive stealer log dump known as SNOWCLOUD-VALIDSULP-FROMTRAFFIC, uploaded to a Telegram channel on 08-Jul-2025. The file exposed a staggering 3,611,167 records tied to United States users, including email addresses, plaintext passwords, and the specific URLs those logins were used on.

Why the SNOWCLOUD Stealer Log Is Dangerous

A file of this size turns a single Telegram upload into a criminal shopping list of millions of working logins. Every record pairs an email, a password, and a website address, giving attackers a ready made instruction sheet for breaking into real accounts.

Since the passwords are stored in plaintext, there is no encryption to defeat. Anyone who downloads the SNOWCLOUD file can immediately begin testing logins against email providers, banks, and shopping sites at scale.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the accounts and services accessed

Why This Matters for the 3.6 Million Affected

Files this large are usually run through automated credential stuffing tools within hours of release. Attackers test each email and password combo against dozens of popular sites, betting that at least some victims reused the same password more than once.

The end result is often account takeover, identity theft, or direct financial fraud. When millions of records leak at once, even a small percentage of successful logins can add up to thousands of compromised accounts.

How the SNOWCLOUD Stealer Log Happened

Stealer malware like the strain behind SNOWCLOUD typically spreads through cracked software, fake browser updates, or malicious attachments. Once it infects a device, the malware quitely combs through saved browser passwords, autofill fields, and active session cookies.

Everything it finds is compressed into a single log file and labeled by the seller, in this case as SNOWCLOUD-VALIDSULP-FROMTRAFFIC. These logs are then traded in bulk on Telegram channels and dark web marketplaces, often sold for a fraction of the value they represent to buyers.

Check If You Are Affected by SNOWCLOUD

With over 3.6 million records involved, the odds that your information is included are real. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like this one.

Run a free scan today, and if your data turns up, change the affected password immediately and enable two-factor authentication wherever it's offered.