Recently, the Igvm offline key was added to the EmsiSoft server, so now you can decrypt .Igvm files. Only files encrypted with an offline key can be decrypted for now. The type of key with which the files were encrypted can be easily determined by looking at the Personal ID, which can be found in the “_readme.txt” file. If the ID ends with “t1”, then the files are encrypted with an offline key.
We tried to decrypt files using Igvm File Decrypt Tool (STOP Djvu decryptor). All encrypted files have been successfully decrypted. More information about Igvm virus in the following article: Remove Igvm virus (.igvm file extension) Igvm File Recovery.