How Malware Led to 11,083 Stolen Logins in NEO3690 Dump

HEROIC analysts traced a stealer log file labeled "HQ MIX COMBO NEO3690" to a Telegram channel where it was uploaded in February 2025. The dump exposes 11,083 records containing email addresses, plaintext passwords, and the URLs where each credential was captured. Every record in this dataset was harvested by infostealer malware operating covertly on compromised devices.

The name "HQ MIX COMBO" indicates this is a curated compilation, likely assembled from multiple infected machines and organized for maximum utility by threat actors seeking fresh, working credentials.

Why Unencrypted Passwords Leave Victims Defenseless

Every password in the NEO3690 dump is stored in plaintext, which means there is no cryptographic protection standing between attackers and your accounts. Unlike hashed password databases that require time and computing power to crack, plaintext credentials can be weaponized instantly.

An attacker downloading this file gains immediate access to 11,083 working login combinations. Automated tools can cycle through each one against popular services within minutes, attempting logins on email providers, banks, social networks, and e-commerce platforms.

The absence of any encryption layer means that the window for victims to protect themselves effectively closed the moment this file appeared on Telegram.

What Was Exposed in the NEO3690 Dump

• Email Addresses — Full email addresses associated with each compromised login, providing attackers with verified identifiers for phishing and credential stuffing operations.
• Plaintext Passwords — Raw, unencrypted passwords captured directly from user input, eliminating any need for cracking before exploitation.
• URLs — The exact web addresses where stolen credentials were entered, allowing attackers to target the same services with the matching login pairs.

Why 11,083 Compromised Logins Multiply Quickly

Password reuse transforms a single breach into a multi-platform threat. Security research indicates that more than half of all internet users maintain identical or nearly identical passwords across multiple services. When 11,083 credential pairs leak, the actual number of vulnerable accounts can be many times larger.

Credential stuffing attacks exploit this reality at scale. Attackers feed the stolen email and password combinations into automated tools that attempt logins across hundreds of websites simultaneously. A successful match on one platform often leads to a domino effect of compromised accounts.

For anyone in this dump, the risk extends far beyond the single site where the password was originally captured. Every account sharing that same credential is now a target.

How Stealer Logs Move From Infected Devices to Telegram

The infection chain begins with a seemingly harmless action: clicking a phishing link, installing pirated software, or downloading a malicious attachment. Once the infostealer malware takes hold, it runs invisibly in the background, capturing credentials from web browsers, email clients, and other applications.

The malware extracts saved passwords, active session tokens, and browser autofill data, then packages everything into a structured log file. These logs are uploaded to command-and-control servers before being distributed through Telegram channels, hacking forums, and dark web marketplaces.

The NEO3690 dump exemplifies this lifecycle. Its organized format, grouping credentials by URL and email, reflects the systematic data extraction that modern infostealer malware performs across thousands of infected endpoints.

Check If Your Credentials Were Exposed

HEROIC's free breach scanner indexes more than 400 billion compromised records, including stealer log data like the NEO3690 dump. Enter your email address to discover whether your credentials have surfaced in this leak or any other breach in the database.

If you find your data has been exposed, immediately update the compromised password on every service where you used it. Activate two-factor authentication on all critical accounts, and adopt a password manager to ensure every future login uses a unique, strong credential.