In November 2023, a telegram user uploaded a stealer log file that exposed 2247 records of endpoints, email, API host and passwords.

Email · Addresses · Plaintext · Password · Urls

We're seeing an uptick in credential dumps linked to cloud service configurations, many surfacing on Telegram channels favored by less sophisticated threat actors. We initially dismissed the TOKYO CLOUD FREE58 leak as another low-impact stealer log. What really struck us wasn't the volume of 1,222 records, but the targeted nature of the compromised endpoints. The logs contained not just typical user credentials, but also API host information, suggesting a potential for broader access to cloud infrastructure. The fact that it was uploaded by a Telegram user also suggested that the threat actor was not particularly sophisticated.

Breach Breakdown: The TOKYO CLOUD FREE58 Stealer Log

A Telegram user uploaded a stealer log file on October 31, 2023, exposing 1,222 records related to a service named TOKYO CLOUD FREE58. The data included email addresses, plaintext passwords, and URLs, alongside API host information. This combination is particularly concerning, as it could allow attackers to gain unauthorized access to sensitive cloud resources and potentially pivot to other systems. The breach caught our attention because of the inclusion of API host information, which is not typically found in standard credential stuffing lists. This suggests that the stealer malware may have been specifically targeting cloud service configurations. This leak matters to enterprises because it highlights the ongoing risk of stealer malware compromising cloud credentials and the potential for attackers to use this information to gain access to sensitive cloud resources. It also underscores the importance of monitoring Telegram channels and other dark web forums for leaked credentials. This incident ties into the broader threat theme of stealer logs being used to compromise cloud environments.

Breach Stats:

* Total records exposed: 1,222
* Types of data included: Email Addresses, Plaintext Passwords, URLs, API host information
* Sensitive content types: Potentially sensitive cloud configuration data
* Source structure: Stealer log file
* Leak location(s): Telegram channel

External Context & Supporting Evidence

While specific news coverage of this particular TOKYO CLOUD FREE58 leak is limited, the broader trend of stealer logs appearing on Telegram and other platforms is well-documented. Security researchers have consistently warned about the dangers of stealer malware and the use of Telegram channels for distributing stolen credentials. For example, BleepingComputer has reported extensively on the rise of stealer logs and their use in credential stuffing attacks. The fact that the passwords were in plaintext suggests that the service provider did not implement proper security measures to protect user credentials. This is a serious security lapse that could have been easily avoided by using a strong hashing algorithm.

Email · Addresses · Plaintext · Password · Urls