Please check if this a false positive as I have checked the signature and all, and have found it a legitimate file. The file path is: c:\program files\sandboxie-plus\sbiedll.dll
Hello,
Please use the link below to submit a sample to the Bitdefender Labs. Once confirmed, false alarms are corrected within hours.
https://www.bitdefender.com/consumer/support/answer/29358/
Regards