MARVEL_PRIME 25.02 Vol 4 Holds More Passwords Than a Small Town Has Residents

MARVEL_PRIME 25.02 volume 4 carries 8,753 plaintext credential records, which is more login pairs than the full resident count of many American small towns. HEROIC threat researchers catalogued this fourth installment after a Telegram operator uploaded it in March 2023, revealing yet another themed stealer log archive carved from info-stealer malware victims.

Putting 8,753 Exposed Logins Into Perspective

Picture a town of 8,753 people where every resident has handed out a working key to their email, their bank, and their favorite streaming service. That is the scale of MARVEL_PRIME 25.02 volume 4. This fourth variant dated February 25 is a separate archive within the MARVEL_PRIME family, meaning attackers now have four distinct credential pools to cross-reference, deduplicate, and stuff against online services.

What MARVEL_PRIME 25.02 Vol 4 Actually Contains

Each of the 8,753 records pairs an email address with a plaintext password and the URL where the credential was captured by stealer malware. The MARVEL_PRIME label signals a tilt toward Marvel, streaming, gaming, and premium subscription accounts, though the underlying infections capture every password saved in a victim's browser, which often includes email, banking, and work platforms alongside the entertainment logins.

How These Logins Got Stolen

Stealer log archives originate from commodity malware families such as RedLine, Raccoon, Vidar, and LummaC2. Victims are usually infected through cracked software, pirated games, fake browser updates, or phishing attachments. Once installed, the malware silently exfiltrates browser-stored passwords, autofill profiles, session cookies, and crypto wallet files, then operators bundle the output into archives and post them to Telegram channels.

Why Plaintext Passwords Are a Worst-Case Scenario

Hashed passwords require attackers to invest time in cracking. Plaintext passwords do not. With MARVEL_PRIME 25.02 volume 4 in hand, an attacker can launch credential-stuffing runs within minutes, walk into accounts on services that never got breached directly, and use the included URL history to craft believable spearphishing. Session cookies packaged with the logs can even let attackers bypass multifactor prompts on still-trusted browsers.

What to Do Right Now

Rotate every password you have reused, starting with email, banking, and any account tied to a payment card. Switch to app-based or hardware-key multifactor authentication and drop SMS codes wherever possible. Run a full anti-malware scan on every device sharing a browser profile with the account. Move password storage into a dedicated password manager so each login is unique and randomly generated.

See If Your Email Is in HEROIC's 400B+ Record Database

HEROIC maintains the world's largest breach intelligence database, with over 400 billion records ingested from breaches, stealer logs, and dark web drops including MARVEL_PRIME 25.02 volume 4. Run a free exposure scan at HEROIC.com to see whether your email, password, or personal data turns up in this archive or across the hundreds of thousands of other incidents we track, then follow the guided steps to lock every affected account down.