Summary
This program delivers advertising content to the user in a manner or context that may be unexpected and/or unwanted. It is usually annoying but harmless, unless it is combined with spyware or trackware.
Removal
Based on the settings of your F-Secure security product, it may block the file from running, move it to the quarantine where it cannot spread or cause harm, or ask you to select an action.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Cinmus.gen detects multiple variants and components of the Cinmus adware family.
Members of this family attempt to contact remote sites and display pop-up advertisements. The following are examples of possible sites Cinmus adware can connect too:
- https://login.zuoyoukongjuan.com
- https://client.zuoyoukongjian.com
- https://al.zuoyoukongjian.com
Specific variants may differ in details, such as filenames and the remote sites it contacts.
Installation
On infection, an initial driver component is dropped and registered as a driver, usually with the name acpidisk.sys. This driver creates a DLL with a TMP extension in the Windows %temp% folder, and then injects the DLL into a process.
The DLL then downloads the adware's main component from a remote site, usually from the domain chnsystem.com. The main component of Cinmus is a DLL installed as a Browser Helper Object (BHO) in Microsoft Internet Explorer.
The BHO's filename varies widely between variants. The files are usually installed to the %system32% folder. Configuration and/or data files are also dropped to the same folder, with the extensions SRG and AXZ.
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