Inside the Telegram alien ULP P855: How Stealer Logs Become Mass Leaks

HEROIC found 13,191,129 unique records in the Telegram alien ULP P855 by alien leak on March 18, 2025, exposing email addresses, plaintext passwords, and homepage URLs pulled from stealer malware logs. The file TXT_ALIEN - 855 circulated on a Telegram channel with roughly 64.7 million total lines, sitting in the slipstream of previous alien drops like P854.

Why This Stealer Log Is Dangerous

Every row reads URL, email, and plaintext password in sequence. That format lets attackers paste records into automated bots and test logins against the exact sites listed, hitting a verified match far faster than traditional credential stuffing. Victims range from home users to corporate employees whose infected devices silently leaked saved passwords.

What Was Exposed in the Telegram alien ULP P855

• 13,191,129 unique email addresses
• Plaintext passwords captured by infostealer malware
• Homepage URLs showing each login target
• URL:LOGIN:PASS triples ready for automated stuffing

Why This Matters

Plaintext credentials produce immediate account takeover, credential stuffing, and identity theft. Because URLs identify banking, cloud, gaming, and corporate SSO sites, initial access brokers sell these records to ransomware affiliates who break into businesses before encrypting them. Personal victims face email hijack, crypto wallet drain, and tax or payroll portal fraud.

How a Stealer Log Dump Works

Infostealer malware such as RedLine, Vidar, Lumma, and StealC spreads through cracked software, malvertising, and phishing. Once installed it extracts saved browser credentials, cookies, crypto wallet files, and autofill data, then uploads the data to a collector. Operators aggregate many victim logs into a ULP file and push it through Telegram channels where resellers and stuffers grab fresh material daily.

Check If You Are Affected

Rotate any password you saved in a browser, enable multi-factor authentication on banking, email, and work accounts, and scan your machine for infostealer activity. You can search the HEROIC scanner, which tracks more than 400 billion breached records, to see whether your email appears in the Telegram alien ULP P855 or connected leaks.