The AR_AU_BD2909 Stealer Log Proves Stealer Malware Still Wins

HEROIC analysts identified a stealer log file, labeled AR_AU_BD2909, uploaded to a Telegram channel by an anonymous user. The file is dated November 20, 2021, and contains 51,838 records tied primarily to accounts in the United States. Each record pairs an email address with a plaintext password and the URL of the site or service the login belonged to.

Why This Is Dangerous

Because this data was harvested directly from infected devices rather than pulled from a hashed database, every password in the file is plaintext and immediately usable. With the exact login URL attached to each entry, an attacker can go straight to the right page and try the credentials without any extra work.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs tied to each set of credentials

Why This Matters

With more than 51,000 credential pairs in a single file, this leak gives attackers an enormous pool to mine for reused passwords. Pairs like these get loaded into automated credential stuffing tools and tested at scale against banking sites, email providers, and social media platforms. Anyone whose password appears here and was reused elsewhere faces a serious risk of account takeover, identity theft, or financial fraud.

How a Stealer Log This Size Gets Built

Stealer logs are generated by infostealer malware, which infects a device through a phishing link or malicious download and quietly copies every password saved in the browser along with the web address each one unlocks. A log the size of AR_AU_BD2909, with more than 51,000 entries, typically comes from a wide infection campaign, later packaged and shared on Telegram for other criminals to buy or download.

Check If You Are Affected

Want to know if your email is among the 51,838 records in the AR_AU_BD2909 leak? HEROIC's free breach scanner checks your information against a database of more than 400 billion leaked records. Run a scan now, and change any password you've reused elsewhere if you get a match.