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I came across the Appinit_dlls warning when running MWB's rootkit scanner.


To give some background, I ran the rootkit scan as my computer suddenly slowed down yesterday. Using Task Monitor, I saw that CPU usage for many processes, from programs such as Chrome to system processes, have shot up and CPU usage hovered between 60% to 100%. This had never happened to this computer before. It is just five months old and top of the line. I had not installed new programs or updates in the two days prior.


- Dell Precision M4800

- Win 7 Professional

- 16GB RAM


- Intel Core-i7-4900MQ 2.8GHz


I had performed the following actions:

1) Ran chkdsk. No errors.

2) Ran memory diagnostic. No errors.

3) Uninstalled Avast free antivirus to avoid clashing with MS Essentials.

4) System restored to four days prior. Computer still slow.

5) Ran Malwarebyte Scan. Found and removed 4 instances of spyware.

6) Dell factory reset. Computer still slow. Windows Experience score now 2.9 due to low CPU score, vs. 6 before the slowdown.

7) Ran MS Malware Removal Tool and Malicious Software scan. No problems found.

8) Ran Kaspersky TDSSKiller. No rootkit found.

9) Ran Malwarebytes Rootkit scan twice. Got the Appinit_dlls message both times but scans were successful. No rootkits found.

10) Ran Autoruns. Log file attached.

11) Due to the factory reset, I had to install a lot of Windows updates. Code 8020002B failed to install multiple times. The Windows Updater troubleshooter tried to solve the problem but failed. It also noted that "Service registration is missing or corrupt".


In short, I have no idea what's going on. With all the scans done and the factory reset, I don't think a hard disk error or malware is behind the sudden slowdown. I thought it could be a rootkit infection, but TDSS and MWB both showed it wasn't that either.




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Hello monosierra and :welcome:

Since the likelihood is high that your system is still probably infected and malware removal actions are not permitted in this sub-forum.

I recommend following the advice from the topic: Available Assistance for Possibly Infected Computers and have one of the Malware Removal Experts assist you with your issue.

If, as recommended, you do open a topic in Malware Removal Help, please make reference to this thread.

If you would like to get off to a very fast start, the Malware Removal Experts would appreciate it if you would also Copy and Paste both the FRST.txt and the Addition.txt output diagnostic reports from only Log Set 1 into your new topic.

Thank you. :)

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