Hidden inside those files was , Vidar , or Raccoon Stealer —types of malware known as "infostealers." Once executed, the malware silently swept through the victims' computers, harvesting: Saved passwords from Chrome, Firefox, and Edge.
As the world prepared for New Year’s Eve, the file was uploaded to . The "4ca1" suffix likely served as a unique hash or internal identifier for that specific batch.
Every few minutes, the stolen data was bundled into small text files and "exfiltrated" to a Command and Control (C2) server managed by a "traff" (a cybercriminal specializing in traffic generation). LOGS 30.12.22_[@leakbase.cc]_4ca1.rar
Once posted, the file was downloaded by several types of actors:
Who look for high-value targets, such as accounts with linked credit cards or administrative privileges at corporations. Hidden inside those files was , Vidar ,
Who use automated tools to test the stolen usernames and passwords against sites like Netflix, Amazon, or banking portals.
By late December 2022, the operator of this particular operation had amassed thousands of these individual folders. To monetize them, they packaged them into a single archive. The tag [@leakbase.cc] was added as a digital watermark to build the reputation of the forum or the uploader within the underground community. The Release: December 30, 2022 Every few minutes, the stolen data was bundled
In the world of cyber threat intelligence, a file like this isn't just data—it represents a snapshot of thousands of compromised digital lives. Here is the story of how such a file comes to exist and the trail it leaves behind. The Origin: The Infection