How to remove the ddayy.dll malware

Most antivirus programs classify ddayy.dll as a harmful extension to Internet Explorer: such as not-a-virus:AdWare.Win32.Virtumonde.dq (detected by Kaspersky), and Trojan:Win32/Vundo.K (detected by Microsoft). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated ddayy.dll software, it's no surprise. In most cases, this kind of adware is installed on the side when you install a freeware product like a Youtube Downloader or a PDF Converter. In the following selection, you can read more about ddayy.dll and how to get rid of it.

Click here to automatically remove the ddayy.dll malware

Ddayy.dll file information

The process has no vendor information.

Description: Ddayy.dll is not essential for Windows and will often cause problems. The ddayy.dll file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 692,276 bytes (13% of all occurrences), 573,492 bytes and 24 more variants. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 67F5CF1D-2967-412C-8AF2-C2D6FEFEE36A or 6D33B121-5C4C-4450-9D1F-7B67085CC199 or 41 more variants. There is no information about the author of the file. The program has no visible window. The service has no detailed description. Ddayy.dll is not a Windows core file. The ddayy.dll file is an unknown file in the Windows folder. It is able to monitor web browsers. Ddayy.dll is able to monitor applications, manipulate other programs and record keyboard and mouse inputs. Therefore the technical security rating is 93% dangerous, however you should also read the user reviews.

Recommended: Identify ddayy.dll related errors

Important: You should check the ddayy.dll process on your PC to see if it is a threat. If ddayy.dll has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

Black Worm - Hijacks Browser
  Steve CA  
Ist gefährlich, aber Achtung wer sie einmal hat wird sie nur durch ein neues Aufsetzten von Windows wieder los. Habe sie gelöscht, und danach hat alles Verrücktgespielt, plötzlich hatte ich ein PW in der Benutzeranmeldung, selbst der Abgesicherte Modus war kaputt ( keine Taskleiste ).Auch eine Reperratur bringt nichts,wollte SP 2 installieren, hatte auf einmal 1500 Prozesse von der "nvsvc32.exe" zu Laufen und 5GB zugesicherte Speicherauslastung. Also wer Diese Datei in seinem Windows\System32 Ordner findet... Sichert all Eure Datein und Formatiert Eure Platte und setzt Windows neu auf.

Summary: Average user rating of ddayy.dll: based on 2 votes with 2 user comments. 2 users think ddayy.dll is dangerous and recommend removing it.

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Best practices for resolving ddayy issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active ddayy process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the ddayy.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

ddayy.dll [all]