Disclaimer: Do not use or modify neither the program or the source code to make software violating the law. - whatever
- Head to https://github.com/cozyplanes/teest and download the latest release
EXE
file. - Windows may warn you with the missing signature. The file is a DEBUG file, so there isn't a publisher signature. You can proceed downloading anyway since it has been virus checked by the developer.
- Type the message you want to display in the textbox.
- Click
Save text
button. - To check the file, click
Cancel
button in the opened popup dialog.
When an MS Excel file (.xlsx
) has been opened, by using TEEST, two files gets opened.
- The original file user opened
- Excel file named
message.txt
with the custom message you have written.
message.txt
excel file will open every single time a person opens a excel file.
In some older versions of Excel, the message may overlap with the user opened file.
When MS Excel program is executed, it is programmed to check the files in the following 2 folders.
C:\Program Files\Microsoft Office\Office[versionnumber]\XLSTART
C:\Users\%username%\AppData\Roaming\Microsoft\Excel\XLSTART
In normal conditions, there is no file in those folders (or the folders doesn't exist at all) but when you use TEEST and click Save text
button, it saves message.txt
file in the folders above. From MS Excel is executed again, it will find out there is a file in the folders above, so it will show those text files in Excel.
There should be a lot of software using this trick, but it is widely known for ransomwares such as GandCrab
and TeslaCrypt
displaying decryption methods in MS Excel by this trick.
- With TEEST
- Open TEEST again.
- Click
Save text
button and clickCancel
in the following popup. - Delete
message.txt
file in the opened explorer.
- Without TEEST TODO
- Head to
C:\Users\%username%\AppData\Roaming\Microsoft\Excel\XLSTART
- Create a text file of any name you like.
- Write something.
- Done.
- When you want to delete it, delete it.
This software is under the MIT License. Refer to the LICENSE
file for more information.
Spam/Ads not allowed. Please only send questions or concerns about the software. It may take up to 48 hours to get a reply.