monster team logs part003: Early Installment of the monster team Series

What Happened in the monster team logs part003 Leak

On January 16, 2025, a Telegram user uploaded monster team logs part003, an early installment in the multi-part monster team logs archive. The file contained 12,272 records scraped from infostealer-infected endpoints and was published to a public Telegram channel alongside later parts of the same series. Part 003 sits near the start of what would grow into a long-running archive that also includes part 163 and part 164.

Where Part 003 Sits in the monster team Timeline

• Part 003: early set with 12,272 records (this post)
• Parts 150+: mid-series high-volume drops
• Parts 163 and 164: later same-week uploads in the same channel

Treat part 003 as a historical seed for the monster team operator rather than an isolated event. Data from this early part remains useful to attackers years after the upload.

Data Exposed in the Stealer Log

• 12,272 email addresses
• 12,272 plaintext passwords (no hashing)
• URLs pointing to the exact sites where credentials were captured

How the Breach Happened

Stealer logs are generated by infostealer malware such as RedLine, Raccoon, Vidar, and Lumma on compromised Windows devices. The malware siphons browser-saved credentials, cookies, autofill data, and crypto wallet files, then packages everything into per-victim folders that operators upload to Telegram channels like the monster team feed.

What You Should Do Now

• Change passwords for any account stored in a browser on a potentially infected device in early 2025 or earlier.
• Run a full anti-malware scan to remove residual stealer components.
• Enable multi-factor authentication on email, banking, and corporate SSO.
• Use a password manager to replace reused credentials with unique values.

Check Your Exposure with HEROIC

HEROIC maintains a database of more than 400 billion compromised records, including entries parsed from monster team logs part003 and every other part of the monster team series. Search your email against the HEROIC database to confirm whether your credentials appear in this early dump before attackers weaponize them again.