: The .7z.001 extension indicates this is the first segment of a larger 7-Zip archive. These archives are split into smaller chunks (e.g., .001 , .002 , .003 ) to bypass file size limits on cloud storage services or to make downloading large batches more manageable.
Because files with these naming conventions often originate from unverified third-party sources or peer-to-peer networks, they carry a high risk of containing malware. It is strongly recommended to: B2BB13-1.7z.001
While there is no formal "article" specifically written about this individual file fragment, here is an analysis of what it represents and how it is typically used: What is this file? B2BB13-1.7z.001