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Website Blocked Pop up - 255.255.255.255

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I'm getting a repeating popup saying "Website Blocked" that is pointing to Dropbox.exe. This just started today and I have not installed any new software. One of the popups, but just one, also said "achost" or something like that. All the rest say dropbox.exe about every 30 seconds. I'm running a Surface 4 with Windows 10 Pro. 

I see other posts about this subject, but they say the help is for that specific person so would someone please help me?

Thanks!

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I am having the same problem. Here's the exported report:

Malwarebytes
www.malwarebytes.com

-Log Details-
Protection Event Date: 11/20/17
Protection Event Time: 1:43 PM
Log File: 09c9aa18-ce2b-11e7-a463-d050997bf55a.json
Administrator: Yes

-Software Information-
Version: 3.3.1.2183
Components Version: 1.0.236
Update Package Version: 1.0.3304
License: Premium

-System Information-
OS: Windows 10 (Build 16299.64)
CPU: x64
File System: NTFS
User: System

-Blocked Website Details-
Malicious Website: 1
, , Blocked, [-1], [-1],0.0.0

-Website Data-
Domain:
IP Address: 255.255.255.255
Port: [17500]
Type: Outbound
File: C:\Program Files (x86)\Dropbox\Client\Dropbox.exe

 

(end)

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Mine just started as well.  Except for an occasional port change it is all the same...I did manage to stop the incessant reporting by going into Dropbox and hitting "pause sync." 

insane.png

Edited by LMM

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Same reason I'm here, the Website Blocked popup is jumping up and down like a jack russell terrier, telling me Dropbox is trying to use an outgoing connection at IP 255.255.255.255. I did try telling MB to check for updates. Log attached.

Edit: Thanks LMM, I should have thought to pause syncing to make the popup stop annoying me.

mb_dropbox_warning.txt

Edited by Lynn_C-H

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Thank you, David. Here's the report:

Malwarebytes
www.malwarebytes.com

-Log Details-
Protection Event Date: 11/20/17
Protection Event Time: 11:28 AM
Log File: 00686998-ce29-11e7-9ddd-bc838500650c.json
Administrator: Yes

-Software Information-
Version: 3.3.1.2183
Components Version: 1.0.236
Update Package Version: 1.0.3304
License: Premium

-System Information-
OS: Windows 10 (Build 16299.64)
CPU: x64
File System: NTFS
User: System

-Blocked Website Details-
Malicious Website: 1
, , Blocked, [-1], [-1],0.0.0

-Website Data-
Domain: 
IP Address: 255.255.255.255
Port: [17500]
Type: Outbound
File: C:\Program Files (x86)\Dropbox\Client\Dropbox.exe

(end)

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For everyone: you can stop the notifications by going into your Dropbox acct and hitting "Pause sync." You are receiving the spamming thing because of this.

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I have the exact same issue, Website blocked popup message appearing every 20 seconds. Started today, about an hour ago.

IP Address: 255.255.255.255
Port: [17500]
Type: Outbound
File: C:\Program Files (x86)\Dropbox\Client\Dropbox.exe

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Thanks LMM! That works to stop the popups. Thanks Zynthesist. Will there be a notification when it's fixed? As LMM said, we can stop syncing Dropbox for now, but we'll need to know when we can sync again.

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Thanks Zynthesist. It didn't show an update available, so I ran the scan which checked for updates. I eliminated the exclusion of 255.255.255.255 but the pop up still comes up, so I don't think it worked. I'm going to put the exclusion back in, but that just gets us back where we started.

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Same here - I updated, but removing the exclusion had the warning popup back in seconds.

MB version 3.2.2.2029, pkg version 1.0.212, update pkg version 1.0.3305

Edit: Restarting had no effect.

Edit 2: Appears to have worked the second time. Thanks Zynthesist! 

mb_dropbox_warning2.txt

Edited by Lynn_C-H
add information

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I killed the exclusion, quit MBAM and restarted it. I've probably waited 3 minutes and don't have the pop-up now. It would have come up already before this update so I think I'm good now! Thank you, Zynthesist!

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I removed the exclusion for 255.255.255.255, updated Malwarebytes and after the restart popup stopped appearing (before restart it just started popping up again like it was before address exclusion). Thanks Zynthesist.

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I get the same warning, and i can't surface the internet anymore.

Warning :

Outbound connection 

ip: 255.255.255.255

port 68 

File: system32/svchost.exe

 

Here's how it got down:

 

Opens PC 

opens browser. (mzl)

acceses some w/e website.

err: no internet connection

-> warning

(check network: connected. Network is up and running)

-> warning

--/>  wtf

tries other 2 browsers. (chrm, ie)

-> warningz

--/>   Panick even more

closes all browsers

meanwhile scans C: (windows partition)

...

-> warning

--/> w  t  F 

airplane mode

> hope for the best

>> please help

Edited by b101

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