Userinit exe download microsoft

Some Simda variants might make the following changes to the registry as part of the installation process:. If you are logged in as an administrator, it might add a scheduled task to run itself with administrator privileges each time you start your PC. After the malware has successfully installed itself, it deletes its own original malware file. Simda checks to see if it's running in a virtual machine, or sandbox, and if it is, it deletes itself.

When it runs, Simda might inject itself into the following processes if it finds them running on your PC, in an effort to hinder detection and removal:. As part of its installation process, Simda might check to see if any of the following processes are running, and if found, won't complete its installation process:. Similarly, some Simda variants checks for the following registry keys, and if found, won't complete its installation process:. It also hooks the following Windows system APIs to help it capture sensitive data, for example, online banking and shopping, email credentials and network information:.

Lets a hacker access and control your PC. In the wild, we've observed Simda targeting Internet banking systems that contain these strings:. It opens a port to let a hacker remotely access your PC by creating the following registry entry:. Using this backdoor, a hacker can do a number of actions on your PC.

For example, a hacker might be able to do any of the following actions:. Steals sensitive information. Some Simda variants collect your personal information, including but not limited to the following:. Some variants also go through your Internet Explorer and Opera history files looking for secure sites you have visited, and might:. Downloads and runs files. Simda's backdoor components might connect to a remote server to provide information about newly-infected PCs.

Once connected to the remote server, Simda receives the configuration information on where to download additional files, and other locations from which to download additional configuration files. These files might include additional malware. In the wild, we have observed the following servers being contacted for this purpose:. Tries to log in as administrator. Avoid placing applications in the RunOnce key on a recurring basis because it delays Explorer Initialization.

Investigating specific issues during Explorer Initialization is beyond the scope of this document. Skip to main content. This browser is no longer supported.

Download Microsoft Edge More info. Contents Exit focus mode. This is a useful feature when you are debugging a dedicated application. This lets users shut down the system without first logging on. The following key value controls whether this button is included.

It runs in the newly logged-on user's context and on the application desktop. Its purpose is to set up the user's environment, including restoring network uses, establishing profile settings such as fonts and screen colors, and running logon scripts. After completing those tasks, Userinit. The shell programs inherit the environment that Userinit. The specific shell programs that Userinit. The Shell key value can contain a comma-separated list of programs to be executed. Windows Explorer is the default shell program and will be executed if the Shell key value is null or not present.

By default, Windows Explorer is listed. When logged on, if a user enters a secure attention sequence SAS , the user is presented with a security options screen. Among the options listed are:.