WATERCLOUD_INFO – 308 FILES 13.06.2025 – THANKS FOR SUB uploaded by a Telegram User

We noticed a concerning influx of data originating from a Telegram channel on June 13th, 2025. This particular upload, attributed to a user identified as "WATERCLOUD_INFO," contained a stealer log file that immediately raised red flags due to its direct implications for endpoint security and credential exposure. What struck us was the relatively straightforward nature of the exfiltration method, suggesting a potential compromise of endpoint security controls rather than a sophisticated network intrusion. The presence of plaintext passwords alongside email addresses and API host information presents a significant risk for further lateral movement and account takeovers.

The breach, discovered on June 13th, 2025, involved the public dissemination of a stealer log file uploaded to Telegram by a user identified as "WATERCLOUD_INFO." This log contained 17,411 records, each detailing endpoint information, associated email addresses, API hostnames, and critically, plaintext passwords. The data structure suggests a typical infostealer compromise, where malware on end-user devices captures credentials and system details. The primary threat theme here is credential stuffing and account compromise, as attackers can leverage the exposed email addresses and plaintext passwords to attempt access to other services. The source structure points to individual endpoint compromises, likely via malware. The leak location was a public Telegram channel, indicating a deliberate act of data dissemination.

While direct news coverage of this specific "WATERCLOUD_INFO" leak is limited, the methodology aligns with a broader trend of infostealer malware campaigns. Research from firms like Mandiant and CrowdStrike frequently details the tactics, techniques, and procedures (TTPs) employed by these actors, often highlighting the widespread use of Telegram and other illicit forums for distributing stolen data. The exposure of plaintext passwords, in particular, remains a persistent vulnerability, and this incident serves as a stark reminder of the ongoing efficacy of such entry vectors despite widespread awareness.