Avast Decryption Tool for BTCWare can unlock BTCWare, a ransomware strain that first appeared in March 2017 and has spawned five known five variants. All the Avast Decryption Tools are available in one zip here.
The variants can be distinguished by encrypted file extension. The ransomware uses two different encryption methods – RC4 and AES 192.
Encrypted file names will have the following format:
foobar.docx.[[email protected]].theva
foobar.docx.[[email protected]].cryptobyte
foobar.bmp.[[email protected]].cryptowin
foobar.bmp.[[email protected]].btcware
foobar.docx.onyon
Furthermore, one of the following files can be found on the PC
Key.dat on %USERPROFILE%\Desktop
1.bmp in %USERPROFILE%\AppData\Roaming
#_README_#.inf or !#_DECRYPT_#!.inf in each folder with at least one encrypted file.
After encrypting your files, the desktop wallpaper is changed, as seen in the screenshot below.
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