Identifies the creation of a Windows service named "BluetoothService" with a binary path in user-writable directories, particularly %AppData%\Bluetooth. This technique was observed in the Lotus Blossom Chrysalis backdoor campaign, where attackers created a service named "BluetoothService" pointing to a malicious binary (renamed Bitdefender Submission Wizard) in a hidden AppData directory. While legitimate Bluetooth services exist in Windows, they are system services with binaries in System32. Any BluetoothService created with a binary path in user directories (AppData, Temp, Downloads) is highly suspicious and indicates potential malware persistence.

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