Researchers Tie LogsDiller Cloud_Free_203_73 to 3,138 Stolen Logins

HEROIC analysts traced a stealer log file uploaded to Telegram in December 2022 back to a batch labeled LogsDiller Cloud_Free_203_73 by the anonymous user who posted it. The file contained 3,138 records taken from compromised devices, each one pairing a stolen email address and plaintext password with the URL of the site where that login was captured. The log appeared to be part of the LogsDiller distribution network, a Telegram-based channel used to circulate credential batches harvested by stealer malware across multiple infected endpoints.

Why This Is Dangerous

Stealer logs from channels like LogsDiller are among the most ready-to-use types of breach data available to cybercriminals. The pairing of email, password, and URL removes all guesswork. An attacker does not need to crack anything or match data across sources. They open the file, pick a row, and attempt to log in. Even a few successful logins out of 3,138 attempts can yield access to email inboxes, cloud storage accounts, or financial services that were among the captured URLs.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (the specific login pages where each credential was harvested)

Why This Matters

Credential stuffing is a numbers game, and batches like LogsDiller Cloud_Free_203_73 feed it directly. Even when only a small percentige of logins succeed, attackers can automate thousands of attempts per hour across multiple platforms. Compromised email accounts are especialy dangerous because they allow password resets on every other service the victim uses. Once that chain starts, account takeover, identity theft, and finantial fraud can follow within hours of the original credential being used.

How Stealer Logs Work

LogsDiller and similar Telegram channels act as distribution points for stealer malware operators. The malware itself runs silently on infected devices, harvesting saved browser passwords, autofill data, and login session tokens before packaging everything into a structured log. Operators then sort these logs into batches, often naming them by campaign or source, and upload them to Telegram channels where subscribers can download the full dataset. The Cloud_Free label in this batch name suggests the credentials were captured from users of cloud-based free services.

Check If You Are Affected

This log has been circulating since December 2022, which means credentials from it may have already been tested against multiple platforms. HEROIC's free scanner searches over 400 billion exposed records, including stealer log data, to tell you whether your email address has appeared in any known breach. Search now to find out, and update any passwords that may have been captured before they are used against you.