7,651 SunCloudPubl passwords stolen in November 2023 stealer log leak

HEROIC analysts identified the SunCloudPubl 490pcs stealer log file while scanning Telegram channels used by threat actors to share stolen credential collections. The upload occured on November 6, 2023, and the file contained 7,651 records stripped from compromised endpoints. Each record included an email address, a plaintext password, and a URL pointing to a service the victim had accessed on their infected device. The combination of all three data points in one file makes this log particularly useful for attackers running automated account takeover campaigns, and the plaintext nature of the passwords removes any barrier that encryption might otherwise create.

Why This Is Dangerous

When passwords are exposed as plaintext, every credential in the file is instantly usable. There is no decryption step, no cracking software needed. An attacker picks up this file and runs the email-password pairs through any major website. If a victim used the same password on their bank, email, or work accounts as they did on the compromised service, those accounts are now open. The URLs in this log make things worse: they tell attackers exactly which services the credentials were linked to, so there is no guesswork about where to try them first. This is a direct, low-effort path from leaked file to stolen account.

What Was Exposed

• Email addresses
• Plaintext passwords (immediately usable, no cracking required)
• Service and API endpoint URLs accessed from victim devices

Why This Matters

Account takeover is one of the most common and damaging outcomes of a credential leak. Once an attacker gets into an email account, they can reset passwords on every other service linked to it. Once inside a financial account, they can transfer funds or make purchases. Seperate from financial damage, identity theft can follow when personal details are harvested from compromised inboxes. For employees whose work credentials were captured, the consequences extend to their organizations: unauthorized access to internal tools, data theft, and network compromise. The SunCloudPubl 490pcs file represents 7,651 individuals who are now exposed to all of these risks until they change their passwords.

How Stealer Logs Work

Infostealer malware is designed to run quietly in the background of an infected device. It typically arrives through a phishing email, a fake game or software download, or a compromised website. Once installed, it combs through the device looking for stored passwords in browsers like Chrome and Firefox, saved credentials in apps, and active login sessions. Everything it finds gets packaged into a log file and sent back to whoever deployed the malware. That operator then distributes the logs on Telegram or dark web markets. The "490pcs" in the name SunCloudPubl 490pcs refers to the number of individual log files bundled together before the credentials were extracted and compiled into this single dump of 7,651 records.

Check If You Are Affected

HEROIC's free breach scanner searches across more than 400 billion records from known data leaks and stealer log collections, including SunCloudPubl 490pcs. Enter your email address to find out instantly whether your credentials appear in this file or any other known breach. No account is required and the search takes seconds. If your data is found, you will see exactly what was exposed and recieve clear guidance on which accounts to secure right away.