What is FreeDownloadmanager TSS?
The Malwarebytes research team has determined that FreeDownloadmanager TSS is a Tech Support Scam. These so-called "Tech Support Scammers" try to trick you into calling their phone number for various reasons, all of which turn out to be fraudulent in the end.
This particular one uses the Winlogon-Shell registry value to lock up the victim's system.
How do I know if my computer is affected by FreeDownloadmanager TSS?
These are the warnings that cover your whole screen after logging on:


And this one if you enter no or an incorrect entry in the field before the "Activate Now" button.

How did FreeDownloadmanager TSS get on my computer?
Tech Support Scammers use different methods for distributing themselves. This particular one was installed by a trojan.
How do I remove FreeDownloadmanager TSS?
Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted application.
But due to the behaviour of the program you will have to reboot into Safe Mode with Networking first.
Alternatively you can enter this number in the field before the "Activate Now" button: 8716098676542789
Then click OK on the resulting prompt:

In both scenarios continue with the instructions below:
- Please download Malwarebytes Anti-Malware to your desktop.
- Double-click mbam-setup-{version}.exe and follow the prompts to install the program.
- At the end, be sure a check-mark is placed next to:
Launch Malwarebytes Anti-Malware - Then click Finish.
- Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
- If an update is available, it will be implemented before the rest of the scanning procedure.
- When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
- Restart your computer when prompted to do so.
- No, Malwarebytes' Anti-Malware removes FreeDownloadmanager TSS completely.
We hope our application and this guide have helped you eradicate this Tech Support Scam.
As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the Tech Supprt Scam.
Technical details for experts
You may see these entries in FRST logs:
Startup: C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FreeDownloadmanager.exe [2016-08-04] ()Alterations made by the installer:
File system details [View: All details] (Selection) --------------------------------------------------- In the existing folder C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup Adds the file FreeDownloadmanager.exe"="8/4/2016 2:26 AM, 535040 bytes, AMalwarebytes Anti-Malware log:
Malwarebytes Anti-Malware www.malwarebytes.org Scan Date: 8/5/2016 Scan Time: 9:12 AM Logfile: mbamFreeDownloadManagerTSS.txt Administrator: Yes Version: 2.2.1.1043 Malware Database: v2016.08.05.03 Rootkit Database: v2016.05.27.01 License: Premium Malware Protection: Disabled Malicious Website Protection: Enabled Self-protection: Enabled OS: Windows 7 Service Pack 1 CPU: x64 File System: NTFS User: {username} Scan Type: Threat Scan Result: Completed Objects Scanned: 316639 Time Elapsed: 7 min, 36 sec Memory: Enabled Startup: Enabled Filesystem: Enabled Archives: Enabled Rootkits: Enabled Heuristics: Enabled PUP: Enabled PUM: Enabled Processes: 0 (No malicious items detected) Modules: 0 (No malicious items detected) Registry Keys: 0 (No malicious items detected) Registry Values: 0 (No malicious items detected) Registry Data: 0 (No malicious items detected) Folders: 0 (No malicious items detected) Files: 2 Ransom.TechSupportScam, C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FreeDownloadmanager.exe, Quarantined, [abcc53f49901082e764c586b39cb6f91], PUP.Optional.FreeDownloadManager, C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FreeDownloadmanager.exe, Quarantined, [1c5bcb7c504ac571f4774e73b054728e], Physical Sectors: 0 (No malicious items detected) (end)As mentioned before the full version of Malwarebytes Anti-Malware could have protected your computer against this threat.
We use different ways of protecting your computer(s):
- Dynamically Blocks Malware Sites & Servers
- Malware Execution Prevention