CuBitCrack.exe is the CUDA-compiled version of BitCrack, an open-source tool used to brute-force Bitcoin private keys to solve the "Bitcoin Puzzle Transactions". The tool requires an NVIDIA GPU to test specific keyspace ranges against address challenges, with the official project hosted on GitHub. For the tool's source code and releases, visit Releases · brichard19/BitCrack - GitHub 27 Jan 2020 —
Because CubitCrack.exe is frequently shared on untrusted platforms, users face : cubitcrack.exe
I should break down the name. "Cubitcrack" – does "Cubit" refer to something? Maybe like a software name? Maybe a misspelling of "CubeIt"? Or perhaps "Cubit" is part of some company or software name. "Crack" in the name makes me think of crackers, as in software cracking, where people bypass software protection. But "crack" could also be part of an unrelated name. Hmm. CuBitCrack