How are malware able to start on boot on windows without administrator rights?
Find a Service which runs an executable which a user can overwrite (Hint: Installed software that has its own updater usually fits the bill.)
bitsadmin (see this example) can run on schedule or on event, and call a handler program, specified by a user.
if a malware doesn't ...
In Windows command line, first nine arguments can be referenced as %1...%9. Even without the quotes, %1 represents the first argument, which from decent browsers will be a URL escaped and quoted full URL. If this was a problem per se, the defaults for e.g. http://, https:// and ftp:// would be vulnerable, the shell\open\command being
Yes, this should be sufficient to prevent malicious websites from executing additional unexpected commands. Chromium both escapes and quotes the url before passing it to the protocol handler, and I expect other browsers do the same, since not doing so would be a major vulnerability.
The syntax of the command is incorrect.
reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe" /v Debugger
This will delete the value. You can do the same for "explorer.exe".
mshta.exe parses web code to run.
GO3sOtu = BN1;
Z0y = new ActiveXObject(WScript.Shell);
Aer53IGv = BY5S;
Quaj7 = Z0y.RegRead(HKCU\\ software\\ najpigann\\ hspi);
RDYKO79Ji = 0x q;
YWy5A0Za = Fl2JV;
At this point, it's simple to piece together the code flow:
Many tools can do that. Regshot, InstallWatch Pro, InCtrl5 are some of them widely used. Get one that fits you well and use it.
From Windows itself, you could use WMIC to track changes using the RegistryKeyChangeEvent class. You would have to create a WqlEventQuery object and use the ManagementEventWatcher to watch over these events. When a change occurs, ...
I recently had a problem like this only yesterday (although the adware was transmitted to mine through a web server). A useful way to get rid of it and find it in the key, that I've personally found helpful, is to download an adware cleaner (like adWcleaner), as they show you where the viruses are being generated from, and also give you the option to remove ...