monster team logs part163: Same-Week Volume From the monster team Channel

What Happened in the monster team logs part163 Leak

On January 16, 2025, a Telegram user uploaded monster team logs part163 to a public stealer log channel. The archive contained 7,441 records scraped from infostealer-infected endpoints and was posted in the same week as its sibling part 164, making the pair a coordinated same-week volume from the monster team operator.

How Part 163 Fits in the Series

• Part 003: early installment in the monster team archive
• Part 163: 7,441 records (this post)
• Part 164: 3,889 records posted the same week as part 163

The monster team archive is numbered sequentially, so part 163 is specifically this 7,441-record set and does not overlap with any other numbered part.

Data Exposed in the Stealer Log

• 7,441 email addresses
• 7,441 plaintext passwords (no hashing)
• URLs covering login endpoints and API hosts

How the Breach Happened

Stealer logs are produced by infostealer malware such as RedLine, Raccoon, Vidar, and Lumma. The malware scrapes browser-saved credentials, session cookies, autofill data, and wallet files from compromised Windows machines, then bundles per-victim folders. Operators post those bundles to Telegram channels like the monster team feed, where part 163 appeared.

What You Should Do Now

• Change passwords on any site whose credentials were stored in a browser on a potentially infected device.
• Run a full anti-malware scan to remove residual infostealer components.
• Turn on multi-factor authentication on email, banking, and SSO accounts.
• Switch to a password manager so every login uses a unique password.

Check Your Exposure with HEROIC

HEROIC maintains a database of more than 400 billion compromised records, including entries parsed from monster team logs part163 and every other part in the series. Run your email through the HEROIC database to confirm whether your credentials surfaced in this same-week volume and respond before attackers do.