216 PCS – 03.01.2023 CLOUDCOSMIC uploaded by a Telegram User

We've been tracking a noticeable uptick in stealer log dumps on Telegram channels over the past few months. These logs, often the byproduct of infostealer malware like RedLine Stealer or Vidar, are a readily available source of compromised credentials and sensitive system information. What really struck us about this particular dump, however, wasn't the volume of records, but rather the apparent targeting of a specific, albeit smaller, organization. The consistency of the domain names and associated API hosts within the logs suggested a focused attack, rather than a widespread campaign. This highlights the increasing risk of targeted credential harvesting, even against smaller entities.

Breach Breakdown: 216 PCS – 03.01.2023 CLOUDCOSMIC Stealer Log

In early January 2023, a Telegram user uploaded a stealer log file named 216 PCS – 03.01.2023 CLOUDCOSMIC. This log contained 3,655 records harvested from compromised endpoints. We discovered this log while monitoring known Telegram channels frequented by cybercriminals trading in stolen data. The specificity of the filenames and internal references within the log immediately raised a red flag, suggesting a targeted operation. This incident underscores the persistent threat posed by stealer malware and the ease with which compromised data can be disseminated through underground channels.

• Total records exposed: 3,655
• Types of data included: Email Addresses, Plaintext Passwords, URLs
• Source structure: Stealer log file
• Leak location(s): Telegram
• Date of first appearance: 03-Jan-2023

The data within the log points to compromised credentials and system information potentially associated with a single organization, or a small group of affiliated entities. The inclusion of plaintext passwords is particularly concerning, as it allows for immediate account takeover if the credentials haven't been changed. The URLs included in the log may also reveal sensitive internal resources or API endpoints.

External Context & Supporting Evidence

The use of Telegram as a primary distribution channel for stealer logs is well-documented. Cybersecurity researchers have observed a thriving ecosystem of individuals and groups trading in stolen data on the platform. Many threat actors leverage automated tools to parse and analyze these logs, enabling them to quickly identify valuable credentials and sensitive information. For example, a recent report by Group-IB details the increasing prevalence of infostealer malware and the associated marketplaces where stolen data is bought and sold. The report highlights Telegram as a key platform for this activity. While we do not have specific attribution details for this particular breach, the tactics and techniques align with the broader trend of credential harvesting and the exploitation of stealer logs.