Blockandsurf Description

Blockandsurf is a Web browser add-on that is classified as a Potentially Unwanted Program by PC security researchers. Although Blockandsurf is advertised as a way of avoiding unwanted content when browsing the Web, the fact is that Blockandsurf may expose the affected Web browser to plenty of unwanted content. Because of this, PC security analysts consider that using Blockandsurf is not worth the trouble of dealing with its various unwanted outcomes, regardless of any supposed services or benefits that Blockandsurf is marketed as having. Security analysts advise removing Blockandsurf entirely from the affected computer. Because Blockandsurf is often designed to prevent easy removal and may also expose the affected computer to potentially harmful online content, PC security researchers advise computer users to get the intervention of a reliable security product to examine the affected computer after uninstalling Blockandsurf and as part of the removal procedure.

How to Avoid the Installation of PUPs such as Blockandsurf

In most cases, Blockandsurf is installed automatically. A common way of distributing programs like Blockandsurf is by bundling them with freeware downloaded from a dubious source. Typically, the computer user may have the option of opting out of installing the PUP. However, in many cases, the computer user may overlook this option or it may be hidden from view. To prevent PUPs like Blockandsurf from being installed automatically, it is important to observe the installation method of any new software attentively and to use custom installation to make sure that the components being installed are the ones you want.

Stopping Unwanted Problems Caused by an Unwanted Tool

Malware analysts have received reports of various problems linked to Blockandsurf. Some symptoms associated with Blockandsurf may include Web browser redirects, pop-ups and new tabs. Blockandsurf may also make changes to the affected Web browser's settings, such as creating a new default home page or default search engine automatically. Blockandsurf may cause performance problems on affected computers. Some typical performance issues may include general slowness, problems connecting to the Internet, freezing and frequent crashes on the affected computer.

Infected with Blockandsurf? Scan Your PC for Free

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Security Doesn't Let You Download SpyHunter or Access the Internet?

Solutions: Your computer may have malware hiding in memory that prevents any program, including SpyHunter, from executing on your computer. Follow to download SpyHunter and gain access to the Internet:
  • Use an alternative browser. Malware may disable your browser. If you're using IE, for example, and having problems downloading SpyHunter, you should open Firefox, Chrome or Safari browser instead.
  • Use a removable media. Download SpyHunter on another clean computer, burn it to a USB flash drive, DVD/CD, or any preferred removable media, then install it on your infected computer and run SpyHunter's malware scanner.
  • Start Windows in Safe Mode. If you can not access your Window's desktop, reboot your computer in 'Safe Mode with Networking' and install SpyHunter in Safe Mode.
  • IE Users: Disable proxy server for Internet Explorer to browse the web with Internet Explorer or update your anti-spyware program. Malware modifies your Windows settings to use a proxy server to prevent you from browsing the web with IE.

If you still can't install SpyHunter? View other possible causes of installation issues.

Technical Information

File System Details

Blockandsurf creates the following file(s):
# File Name Size MD5 Detection Count
1 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurf157.exe 196,096 ff24d17e2f012a04adfdbe6b3eaf3442 2,643
2 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockNSurf.exe 104,448 97f2bf55b5bbeb88e44b809023236fb6 2,349
3 %PROGRAMFILES(x86)%\-BlockAndSurfS\BlockAndSurfmT174.exe 179,200 f6bdace99f07639809cdeda8b820e5cd 2,208
4 %PROGRAMFILES(x86)%\-BlockAndSurfS\BlockAndSurfA.exe 100,864 43eccd603ae8796f0d57712ca4bb9c8d 2,194
5 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BnSup.exe 322,560 a7a1a7a66a17c316dba9d147d519b522 2,146
6 %PROGRAMFILES(x86)%\-BlockAndSurfS\BlockAndSurfj82.exe 312,832 ac5991dff9c2345f37bbe273eba54961 1,952
7 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurf_wd.exe 93,184 f9fee268de252d0184b6637da5e9461b 1,821
8 %PROGRAMFILES(x86)%\di1BlockAndSurf\Z7BlockAndSurfE91.exe 427,008 697c5df31e96114be29b88e55280fcf9 1,648
9 %PROGRAMFILES(x86)%\ver4BlockAndSurf\m8BlockAndSurfZ31.exe 515,072 bef6fc2fad956fa046e868c8ca1be4c5 1,501
10 %PROGRAMFILES%\v04BlockAndSurf\v02BlockAndSurfV21.exe 425,472 558774c9ee02179970a8c395ae28d9c8 1,411
11 %PROGRAMFILES(x86)%\ver0BlockAndSurf\J4BlockAndSurfJ52.exe 519,680 532a4362f82d12bcad5bb56f59b37045 1,194
12 %PROGRAMFILES%\di2BlockAndSurf\di0BlockAndSurfB94.exe 427,008 a23e19f084984a0d0815264b09db6cab 1,162
13 %PROGRAMFILES%\v04BlockAndSurf\w4BlockAndSurfF.exe 98,304 02456db030ac0323dd0af3cd656d6b7c 1,146
14 %PROGRAMFILES%\-BlockAndSurfS\174.dll 192,512 78ac11d8bc630ec0f77948d66e09b58d 1,121
15 %PROGRAMFILES%\di2BlockAndSurf\175.dll 194,048 0381b5380bdc7cbd5d4963820cd1b707 1,014

More files

Registry Details

Blockandsurf creates the following registry entry or registry entries:
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\BlockAndSurf_wd
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{D0AA852D-C264-4E3D-933C-4C7A522BDC77}
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{D3A97C51-EF50-470C-9430-A49EC4417907}
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\BlockAndSurf Update
Software\Mozilla\Firefox\Extensions, value: {e7042136-bd19-4c7e-b6e3-8a360fd2f2aa}
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures, value: BlockAndSurf Update.job
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures, value: BlockAndSurf Update.job.fp
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures, value: BlockAndSurf_wd.job
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures, value: BlockAndSurf_wd.job.fp
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D3EF7DD7-D040-0965-D2C3-A0ECE64E7E98}
Software\Microsoft\Windows\CurrentVersion\Run, value: BlockAndSurf
Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C5170891-1781-1CF9-8BA2-5A7BFA30A9B3}
Software\Mozilla\Firefox\Extensions, value: {7D28CEA6-D0D4-A51C-042D-40679BCF0219}
The following CLSID's were found:
HKEY..\..\{CLSID Path}

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