Inside the ULP 5500000 7 Logs: How Malware Harvested 4.9 Million Passwords

HEROIC analysts discovered the ULP 5500000 7 stealer log while tracking Telegram channels for newly circulated breach archives in April 2026. The dataset contained 4,937,455 records in the standard URL:Login:Password format. Each entry included an email address, a plaintext password, and the URL of the website where that credential was harvested by malware installed on the victim's device. Despite the 5.5 million label in the archive name, the verified record count came to just under 5 million, a substantial dataset that HEROIC has indexed in its DarkHive breach database.

Inside the ULP 5500000 7 Logs: How Malware Harvested Nearly 5 Million Passwords

The ULP format is the direct output of information-stealing malware. When a device is infected, the malware scans the system for stored credentials and packages them into a text file with one record per line: the URL of the site, the login username, and the password. No cracking is needed. The malware captures passwords before they are ever encrypted by the browser.

In a dataset of this size, nearly 5 million infections contributed to the archive. Each infected device represents a real person who unknowingly had their browsing credentials comprimised, most of them through phishing emails, malicious downloads, or fake browser extensions. The resulting log is not a breach of a single service: it is a cross-service snapshot of millions of people's online accounts.

What the ULP 5500000 7 Archive Contained

• Email addresses (primary login identifiers across most online platforms)
• Plaintext passwords (unencrypted, harvested directly from infected browsers)
• URLs (the exact websites where each credential pair was stolen)

Why Nearly 5 Million Stolen Credentials Enable Mass Account Takeover

Credential-stuffing operations rely on large datasets like this one to maximize success rates. Automated tools test each credential pair against dozens of services simultaneously. Banking apps, email providers, retail sites, and subscription platforms are all targeted. The URL field in each record narrows the attack further: rather than testing a password against every possible service, attackers go directly to the site where it was confirmed to work.

Even a fraction of a percent success rate on a nearly 5 million record dataset translates to tens of thousands of successfully hijacked accounts. Each takeover can lead to unauthorized purchases, drained savings, stolen loyalty points, or an email inbox used as a pivot point for further fraud. These outcomes allready affect real victims whose data appeared in logs like this one.

How Large ULP Archives Like This One Circulate on Telegram

Telegram has become the primary distribution platform for stealer log archives. Operators post archives in private or semi-private channels, often using names that advertise the record count to attract buyers. A label like ULP 5500000 7 indicates this is the seventh archive in a series, suggesting an ongoing malware campaign with regular data releases.

Once posted, the archive is downloaded and redistributed by multiple threat actors. Some incorporate the data into larger combolists. Others use it directly for credential-stuffing campaigns. By the time a log is indexed in HEROIC's DarkHive, it has typically been circulating for days or weeks and has been accessed by numerous seperate parties across the threat actor ecosystem.

Check If Your Passwords Were Harvested in the ULP 5500000 7 Log

HEROIC's free breach scanner searches across more than 400 billion records, including stealer log archives like ULP 5500000 7. If your email address appears in this dataset, HEROIC will identify it immediately. Visit HEROIC.com, enter your email, and see your results in seconds. If your credentials were included, change the affected passwords immediately and enable two-factor authentication on every account where it is available.