The KeyCloud Logs #133 Stealer Log Hands Hackers Your Credit Card Data

HEROIC analysts identified the KeyCloud Logs #133 by .boxed.pw stealer log posted to a public Telegram channel on June 10, 2025. The log exposed 7,063 records containing email addresses, usernames, IP addresses, plaintext passwords, homepage URLs, and, critically, credit card data. The inclusion of financial information alongside login credentials makes this log considerably more dangerous than a standard credential dump. Attackers who download this file do not just get the ability to log in as you. They may also have the information needed to make fraudulent purchases or gain access to payment accounts.

What the KeyCloud #133 Log Gives Attackers Across Multiple Attack Types

Most stealer logs focus on credentials. This one includes a broader attack surface. With email addresses and plaintext passwords, attackers can attempt account takeover on any service the victim uses. With IP addresses, they can bypass geographic login alerts. With homepage URLs, they know exactly which services to target first. And with credit card data, they can move directly to financial fraud without needing to compromise a payment account first.

That combination is unusualy potent. An attacker working through this log has multiple independent paths to profit from each victim's data, and those paths do not depend on each other. Even if a victim changes their password quickly, the credit card data in this log remains valid and exploitable until the card is cancelled.

What Was Exposed in the KeyCloud Logs #133

• Email Addresses — Primary login credential for most online accounts and services
• Usernames — Secondary identifiers that help attackers locate accounts across platforms
• IP Addresses — Network location data used to evade geographic security filters
• Credit Card Data — Financial information enabling direct fraudulent transactions
• Plaintext Passwords — Fully readable, immediately usable without any cracking or decryption
• HomePage URLs — Identifies the specific services and sites each victim was actively using

Why This Matters: Financial Fraud, Account Takeover, and Identity Theft

When credit card data enters a stealer log, the risk profile changes significantly. Account takeover is still a major concern, as attackers will test the plaintext passwords against popular services through automated credential stuffing. But financial fraud can happen in parallel, independant of whether the victim catches the login attempts in time.

Identity theft is another serious risk. With an email address, username, IP address, and credit card number, an attacker has enough information to impersonate a victim across multiple contexts, including contacting banks, opening lines of credit, or bypassing account verification processes that rely on partial financial data. The downstream consequenses can take months or years to fully resolve.

How the KeyCloud Stealer Log Was Built and Distributed

Infostealer malware collects everything it finds on an infected device: saved browser passwords, session cookies, autofill data, and in some cases, payment card details stored in browsers or financial apps. The malware bundles this into a structured log file and transmits it to the attacker.

The .boxed.pw operator collects and compiles logs from multiple sources, numbering them sequentially. The #133 designation means this is at least the 133rd batch released through this particular channel, suggesting a long-running, organized operation. Each batch is posted to Telegram, where it is downloaded by other actors, incorporated into combolists, or sold on dark web markets. The credit card data in this log is particularly attractive to financially motivated threat actors and likely accelerated its redistribution.

Run a Free Scan to See If You Were in the KeyCloud #133 Breach

HEROIC's breach scanner checks your email address against more than 400 billion exposed records, including the KeyCloud Logs #133 and the combolists it has been folded into. The scan is free and returns results in under a minute.

If your email appears, act immediately on two fronts. First, change the passwords on all accounts that share the exposed credentials. Second, contact your bank or card issuer to verify your credit card activity and consider requesting a new card number. Enable two-factor authentication on your primary email and financial accounts. Do not wait, because with credit card data in the mix, the window for proactive action is shorter than with credentials alone.