The ESET Win32/Filecoder.AE Cleaner is a specialized malware removal and decryption tool developed by ESET to counter the Win32/Filecoder.AE ransomware. This specific ransomware family encrypts personal user files and demands payment—historically using platforms like Onpay.ru—in exchange for a decryption key.
To safely neutralize the threat and attempt file recovery, you must isolate the device and execute the ESET cleaner tool through the Windows Command Prompt. 🛠️ Step 1: Isolate the Infection
Before attempting any cleanup, immediately disconnect the computer from the local network and the internet. This stops the ransomware from spreading to other network drives, shared folders, or cloud backups. 📥 Step 2: Download the Cleaner
Using an uninfected computer, download the standalone ESET Filecoder.AE decryption tool (often named decoder.exe) from the official ESET Knowledgebase. Transfer the file via a clean USB drive and save it directly to the Desktop of the infected computer. 💻 Step 3: Run the ESET Decoder via Command Prompt
Because the ransomware may lock standard application windows, you must run the utility via an elevated Command Prompt:
Click Start, type Command Prompt or cmd, right-click it, and select Run as administrator.
Navigate to your desktop by typing the following exact command and pressing Enter: cd %userprofile%\Desktop Use code with caution. Initialize the tool by executing: decoder.exe Use code with caution.
Read and accept the End-User License Agreement (EULA) when prompted. 🔍 Step 4: Scan and Decrypt Your Drives
Once the tool is initialized, you can target specific folders or entire drives:
Scan a specific folder: Type decoder.exe Encrypted (replace “Encrypted” with your target directory) and press Enter.
Scan an entire drive: Type decoder.exe C: and press Enter. To target secondary drives, replace C: with the appropriate drive letter (e.g., D:).
Verify completion: The process is finished when the command line displays “Decoding 100%” or “Done”. A troubleshooting log (decoder_log.txt) will automatically generate on your Desktop if any errors occur. ⚠️ Critical Post-Recovery Advice
Never pay the ransom: Paying does not guarantee you will get your files back and funds criminal networks.
Run a full system sweep: After using the decoder, boot into ESET SysRescue Live or use an updated premium suite to thoroughly eliminate any remaining ransomware artifacts.
Restore from backups: If some files fail to decrypt, restore them from a clean backup created prior to the infection. If no external backups exist, you can check for leftover Volume Shadow Copies using third-party tools like ShadowExplorer, though modern ransomware frequently targets and deletes these files.
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