BreachForums 27Kk ULP by WLFR Joins a Long Line of Stealer Log Drops

On December 12, 2024, HEROIC's dark web monitoring detected the BreachForums 27Kk ULP by WLFR stealer log posted to the forum. The raw dataset contains approximately 28 million lines and deduplicates to 3,377,522 unique records, each with an email address, a plaintext password, and the homepage URL where the credential was originally captured.

Why This Stealer Log Is Dangerous

WLFR is a recurring poster on BreachForums, and the 27Kk label signals a bulk ULP (URL:login:password) drop intended for credential stuffing. Because every record includes the exact target URL, attackers do not need to guess which sites the login works on. They can simply filter, stuff, and sort successful hits into account resale queues.

What Was Exposed in BreachForums 27Kk ULP by WLFR

• Email addresses
• Plaintext passwords
• Homepage URLs tied to each login

Why This Matters

BreachForums has functioned as the dominant Western-facing credential market since the shutdown of RaidForums in 2022. Drops like this one from WLFR are part of a near-daily cadence that keeps criminal combolists fresh. Each new ULP release compounds the exposure of victims whose credentials were captured months or years earlier by infostealer malware.

How Stealer Log Breaches Work

Infostealer families such as RedLine, Lumma, Vidar, and StealC reach victims through pirated software, cracked game clients, malvertising, and phishing attachments. Once active, the malware harvests browser-saved passwords, cookies, autofill data, and crypto wallet files, then transmits the log to the attacker. Operators bundle thousands of victim logs into branded releases like 27Kk ULP and post them to BreachForums for sale or free distribution.

Check If You Are Affected

HEROIC monitors over 400 billion compromised records across stealer logs, breaches, and dark web leaks. Run a free scan to check if your email appears in the BreachForums 27Kk ULP by WLFR stealer log, and receive clear remediation steps.