SunCloudNew 1294 – 350 LogsFile uploaded by a Telegram User

We noticed a recent data leak originating from a stealer log file uploaded to Telegram on September 22, 2025. This particular incident, identified as SunCloudNew 1294, stands out due to the direct exposure of endpoint information alongside more common credentials. The rapid dissemination of such logs on public platforms presents an immediate risk, bypassing traditional perimeter defenses by leveraging compromised endpoint security. What struck us was the inclusion of API host details, suggesting a potential pivot point for attackers beyond individual user accounts.

The breach breakdown reveals a stealer log file, uploaded by an anonymous Telegram user, containing 15378 records. The leaked data types include email addresses, plaintext passwords, and associated URLs. Crucially, the log also enumerates API hosts, which could facilitate lateral movement within an organization or provide insights into the architecture of targeted systems. The source structure of the leak points to a compromised endpoint from which the stealer exfiltrated this information. The immediate leak location on Telegram indicates a high degree of accessibility for malicious actors.

External Context

While specific news coverage for this particular stealer log upload is limited at this early stage, the broader trend of credential stuffing and API key compromise via stealer malware is well-documented. Security research from firms like Mandiant and CrowdStrike has consistently highlighted the efficacy of such techniques in initial access and persistent threat operations. The use of Telegram as a distribution channel for compromised data is a persistent OSINT finding, often serving as a low-friction marketplace for threat actors.