Remove KEYHolder - Get Rid of KEYHolder Completely

KEYHolder is quite harmful to your system:

Many computer users have been attacked by KEYHolder as of later which encrypted large number of data on the infected PC. KEYHolder is a new type of crypto-ransomware. The same as other family members like OphionLocker, CryptoLocke, and CryptoWall, KEYHolder is able to encrypt photos, videos, documents and other formats with ppt, txt, pptm, pptx, psd, pst, ptx, r3d, raf, raw, rtf, rwl, srf, srw, as extensions in the target PC.