Avast says my computer has a rootkit or a trojan called Blackbeard

Its also constantly blocking websites, for example hxxp://forteen-meters7.me/task/3038/ from svchost.exe

Any help would be appreciated.

Follow instructions https://forum.avast.com/index.php?topic=53253.0

http://blog.avast.com/2014/01/15/win3264blackbeard-pigeon-stealthiness-techniques-in-64-bit-windows-part-1/

Once you’ve run the programs requested and attached your logs, a certified malware removal expert will be brought in to assist you. Not something the average user can clean or remove themselves. First three programs listed are needed.

Here are the logs for the three programs. I should mention that after I ran the scan with rootkit detection selected for MalwareBytes and was prompted to apply actions my computer was stuck in an endless reboot cycle until I used the built in Microsoft repair tool that it offers in the F8 menu on startup.

Hello,

https://sites.google.com/site/cannedfixes/combofix/51a5bf3d99e8a-ComboFixlogo16.png
Scan with ComboFix

This is a very powerful tool that should be used only if advised by Malware Analyst.
Do not run ComboFix on your own!

Referring to this instruction, please download ComboFix by sUBs and save it to your desktop.
Temporary disable your AntiVirus and AntiSpyware protection - instructions here.

[*]Right-click on
https://sites.google.com/site/cannedfixes/combofix/51a5bf3d99e8a-ComboFixlogo16.png
icon and select
https://sites.google.com/site/cannedfixes/home/hosted-images-tools/RunAsAdmin.jpg
Run as Administrator to start the tool.
[*]Accept the disclaimer and agree if prompted to install Recovery Console.
[*]Do not take any actions while ComboFix goes through your System - it may cause it to stall!
[]This scan may take some time!
[
]When finished - it will display a logfile (located also on your main drive, usually C:\ComboFix.txt).

Include that log in your next reply.

http://forum.programosy.pl/images/smilies/icon_idea.gif
If you’ll encounter any issues with internet connection after running ComboFix, please visit this link.

http://forum.programosy.pl/images/smilies/icon_idea.gif
If an error about operation on the key marked for deletion will appear after running the tool, please reboot your machine.

Here’s the log from ComboFix.

Looks clean, how is the situation now?

Sorry, I fell asleep. I am still getting constant messages from avast saying that svchost is trying to launch websites, so somethings still broke.

Okay, let’s make more scans:

https://sites.google.com/site/cannedfixes/farbar-recovery-scan-tool/FRST.gif
Scan with Farbar Recovery Scan Tool

Please re-run Farbar Recovery Scan Tool to give me a fresh look at your system.

[*]Right-click on
https://sites.google.com/site/cannedfixes/farbar-recovery-scan-tool/FRST.gif
icon and select
https://sites.google.com/site/cannedfixes/home/hosted-images-tools/RunAsAdmin.jpg
Run as Administrator to start the tool.
(XP users click run after receipt of Windows Security Warning - Open File).
[*]Make sure that Addition option is checked.
[*]Press Scan button and wait.
[*]The tool will produce two logfiles on your desktop: FRST.txt and Addition.txt.

Please include their content into your next reply.

Ok heres the new logs.

Once again we shall use FRST for additional checks. Re-run FRST/FRST64 by double-clicking:

[*]Type rpcss.dll into the Search: field in FRST then click the Search Files button.
[*]FRST will search your computer for files and when finished it will produce a log Search.txt in the same directory the tool is run.
[*]Please attach it to your reply.

Search log

1. Open notepad and copy/paste the text present inside the code box below.
To do this highlight the contents of the box and right click on it. Paste this into the open notepad.
NOTICE: This script was written specifically for this user, for use on that particular machine. Running this on another machine may cause damage to the operating system

Replace: C:\Windows\winsxs\x86_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7601.17514_none_6bd245e79c221747\rpcss.dll C:\Windows\System32\rpcss.dll

2. Save notepad as fixlist.txt to your Desktop.
NOTE: => It’s important that both files, FRST and fixlist.txt are in the same location or the fix will not work.

3. Run FRST/FRST64 and press the Fix button just once and wait.
If the tool needed a restart please make sure you let the system to restart normally and let the tool completes its run after restart.

The tool will make a log on the Desktop (Fixlog.txt). Please attach it to your reply.
Note: If the tool warned you about the outdated version please download and run the updated version.

Fixlog

Good, is it fixed now?

After that fix was run it was still doing the same thing with the pop ups and whatnot. However after I restarted it it seems fine, and a malwarebytes scan with the rootkit detection selection didn’t turn up anything like it had been, so I think we might have fixed it. Thank you for the help. Now I just have to teach my sister-in-law how to use the internet properly so this doesn’t happen again.