The 273037_BR_177.128.89.238 Stealer Log Leaked in June 2023. Is Your Data Still Out There?

In June 2023, HEROIC analysts catalogued a stealer log shared on Telegram as 273037_BR_177.128.89.238_08-06-23. The file exposed 45 records containing email addresses, plaintext passwords, and URLs collected from compromised endpoints. The data was released on 25 June 2023, and the IP pattern suggests Brazil-based systems were among those targeted by the underlying malware.

Why the 273037_BR_177.128.89.238 Stealer Log Is Dangerous

Stealer logs contain ready-to-use attack data. Each entry in this file pairs an email address with a plaintext password and the specific URL it belongs to. Anyone who obtained this file two years ago can still use those credentials today, because passwords rarely get changed after a breach that most victims never hear about. The window of exposure does not close on its own.

What Was Exposed in 273037_BR_177.128.89.238_08-06-23

• Email Addresses
• Plaintext Passwords
• URLs (website and application endpoints)

Why This Matters

Data from 2023 breaches continues to be actively used in credential stuffing and account takeover campaigns today. Criminals purchase and trade these logs for months or years after the initial leak. If you have not changed your passwords since June 2023, any credentials that appeared in this log may still be valid and in use by attackers targeting your accounts, email, or financial services.

How Stealer Log Breaches Like 273037_BR_177.128.89.238 Work

Infostealers are a category of malware specifically designed to pull browser-saved passwords, cookies, and autofill data from infected devices. Once installed, the malware operates silently, often for days or weeks, before transmitting all gathered data to the attacker as a structured log file. These files are then uploaded to private Telegram channels and dark web forums, where they circulate freely or are sold to credential stuffers and identity fraudsters.

Check If You Are Affected

HEROIC's free breach scanner searches over 400 billion exposed records, including stealer logs and Telegram leaks like this one. Enter your email to find out if your credentials from 273037_BR_177.128.89.238_08-06-23 or any other breach are still circulating, and get steps to close those security gaps now.