Threat Database Worms Win32/SillyAutorun.FTW

Win32/SillyAutorun.FTW

By GoldSparrow in Worms

Threat Scorecard

Ranking: 4,504
Threat Level: 10 % (Normal)
Infected Computers: 2,548
First Seen: June 13, 2013
Last Seen: September 20, 2023
OS(es) Affected: Windows

There have been recent reports of a dangerous Autorun worm that is used to infect removable drives in order to spread from one computer to another. This worm, identified as Win32/SillyAutorun.FTW, uses several advanced techniques to infect computers while avoiding detection. Like most worms, Win32/SillyAutorun.FTW copies itself to the targeted drive and then makes changes to the infected computer's settings that allow Win32/SillyAutorun.FTW to run automatically during each start-up. Win32/SillyAutorun.FTW detects whether there are any removable drives connected to the infected computer and then makes a copy of itself on these drives.

The Win32/SillyAutorun.FTW Infection Process

While worms that target removable drives are quite common, Win32/SillyAutorun.FTW uses two simple techniques that allow Win32/SillyAutorun.FTW to trick computer users into ignoring its presence. First, Win32/SillyAutorun.FTW will not copy itself to removable drives connected to the infected computer immediately. Rather, Win32/SillyAutorun.FTW will wait a while before doing this. Win32/SillyAutorun.FTW will also overwrite infected files one by one rather than all at once. Both of these simple techniques mean that a computer user connecting a removable drive to the infected computer will not notice an immediate change, making it more likely that they will not become aware of the Win32/SillyAutorun.FTW worm's presence, which will start the infection process only after the victim's guard is down. Win32/SillyAutorun.FTW hides its files from view, using Windows Explorer's own settings to do this. Once installed, Win32/SillyAutorun.FTW is designed to send out messages through social media and an email containing an attachment with the Win32/SillyAutorun.FTW and a message claiming that the attachment is actually a photo.

Protecting Your Computer from the Win32/SillyAutorun.FTW Worm

Some simple measures can prevent a Win32/SillyAutorun.FTW infection on your computer. First of all, ensure that your file system allows you to see hidden files so that you can observe the contents of all removable drives immediately. Also ensure that all removable drives are fully scanned with a reliable anti-malware program before opening any of their files. Always avoid opening email attachments and embedded links if they are unsolicited, even if they were sent by a friend or acquaintance. Taking these simple measures can prevent Win32/SillyAutorun.FTW from being installed on your computer. These kinds of malware threats can be used to distribute malware used to steal important personal information or to spy on your online activity, so it is extremely important to prevent them from entering your computer.

File System Details

Win32/SillyAutorun.FTW may create the following file(s):
# File Name Detections
1. C:\Documents and Settings\\Application Data\E-73473-3674-74335\msnrsmsn.exe

Registry Details

Win32/SillyAutorun.FTW may create the following registry entry or registry entries:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft3264OSUpdate

URLs

Win32/SillyAutorun.FTW may call the following URLs:

search.mapsrch-site.net

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