How To Remove IDM confirmer.vbs VBS:Downloader-KB ?
Contents
This type of infection spreads through removable media like USB key, SD cards, phones, GPS, tablets ..
Any USB device containing free disk space can be contaminated. IDM confirmer.vbs was detected by UsbFix, Anti-Malware Software for USB. The file was submitted to VirusTotal, a service that combines the detection of more than 40 antivirus engines.
Propagation scheme :
In (1) healthy USB support is plugged into an infected PC, where the infection is active. This will automatically create a copy of the malicious code (2) on the healthy USB support. Once the USB support healthy contaminated, it serves as a means of transport to the infection to infect a healthy PC (3).
To understand this type of infection, we invite you to read these Post: USB Virus General Description and
How to remove shortcut virus USB ?
How to remove IDM confirmer.vbs VBS:Downloader-KB ?
UsbFix helps you detect and remove common USB-borne infections (shortcut malware, autorun tricks, script-based threats) and cleans both your PC and connected removable drives.
- Download and run UsbFix (Windows).
- Plug in the infected USB drive(s) or external disk(s).
- Click Clean and let the tool finish.
- Restart the PC if UsbFix asks you to.
Not sure what you’re dealing with? See: USB Shortcut Virus · Autorun.inf · Disable Windows Script Host.
Information for : IDM confirmer.vbs VBS:Downloader-KB
Detection : VBS:Downloader-KB
Size : 89481 bytes.
File Type : text/plain
HASH MD5 : 76c158cec324c4af11e40bc25e4b9d5c
HASH SHA1 : 7e4528520b7691b26c19dc014a99ce7a6a856c19
HASH SHA256 : 968ebcdf5502cf32633d7b5d25a961d4638f0eb25f04d6f4b1b7ec692e5c467b
VirusTotal Analys Report
This malware was submitted to VirusTotal, a service that combines engines of detections over 40 antivirus.
39 detection for 57 antivirus tested.
Associated signature: VBS:Downloader-KB
Yes, this threat can be dangerous depending on its behavior: data theft, unwanted ads,
system slowdowns, or USB reinfection. The most important thing is to act quickly and avoid
plugging the USB drive into multiple computers before cleaning it.
Common signs include: missing files or folders, folders turned into shortcuts,
unknown files (e.g. autorun.inf), pop-ups opening automatically, or error messages when plugging in the device.
Helpful guide:
autorun.inf virus.
Disable AutoPlay/Autorun in Windows. This is one of the most common entry points for USB-based infections.
Follow this guide:
Enable / Disable AutoPlay
.
Some threats use scripts (VBS/JS) to relaunch automatically, spread via USB,
or download additional malware. To reduce this risk, you can disable Windows Script Host:
Disable Windows Script Host
.
The recommended method is to scan both the PC and the USB drive, remove the threat, then fix any changes
(shortcuts, hidden files, settings). Download the official tool here:
Download UsbFix.
Very often, yes. This symptom is typical of the USB Shortcut Virus.
See the full explanation and step-by-step fix here:
USB Shortcut Virus
.
For stronger protection: limit USB ports, control allowed devices, and block suspicious behavior.
Useful guides:
USBGuard
and BadUSB.
Avoid doing that. If the drive is infected, you may contaminate another computer.
First apply the safety steps (disable AutoPlay, scan, clean), then reconnect only when everything is clean.
✅ Useful resources:
Download UsbFix •
autorun.inf •
USB shortcuts •
USBGuard
BadUSB
FAQ – Frequently Asked Questions about: Malware removal: IDM confirmer.vbs ( )
Is Malware removal: IDM confirmer.vbs ( ) dangerous?
How can I tell if my USB drive is infected?
What should I do first to prevent reinfection?
Why do I sometimes see scripts (.vbs / .js) related to this threat?
How can I remove Malware removal: IDM confirmer.vbs ( ) safely (without losing my files)?
If my folders became shortcuts, is it related?
How can I protect myself in the future from USB infections?
Can I plug the USB drive into another PC to test?