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

Infection Statistics

Our MalwareTracker shows malware activity across the world. Explore real-time data of Blockandsurf outbreaks and other threats from global to local level.

File System Details

Blockandsurf creates the following file(s):
# File Name Size MD5 Detection Count
1 %PROGRAMFILES%\BlockAndSurf Corp\BlockAndSurf158.exe 141,824 b851d037bb2a7c035e76cf42501e1d7a 569
2 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfhdm158.exe 142,336 67f28678cdf79acf5a2eda5ea518b4dc 227
3 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfhdmbVw.exe 77,312 fa873b8763c04bd168efe7db0556be3f 220
4 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfhdm.exe 375,808 cfa2d660f0f25973f0f87415ccb094e6 213
5 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfKF161.exe 143,872 50194651e64b6befabcb23ca9678cdea 102
6 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfp72.exe 367,104 8e755264343d7687f144c2961d0e40c1 94
7 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfC.exe 77,312 185ad2897ec854e80be1c616e273ea59 90
8 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfbt161.exe 143,360 e48a2b36acc55e1fd16e6e3025d8b0eb 60
9 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurfc08.exe 306,688 951b4de97f63b3d224c152af6ca7a968 59
10 %PROGRAMFILES%\BlockAndSurf-soft\BlockAndSurfHF161.exe 142,848 b635a9bf17c3012f2ef4577817187c83 48
11 %PROGRAMFILES%\BlockAndSurf-soft\BlockAndSurfV47.exe 306,688 4de0f323b6da9aef69b504ca6e1a39aa 46
12 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurf157.exe 196,096 ff24d17e2f012a04adfdbe6b3eaf3442 2,643
13 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockNSurf.exe 104,448 97f2bf55b5bbeb88e44b809023236fb6 2,349
14 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BnSup.exe 322,560 a7a1a7a66a17c316dba9d147d519b522 2,146
15 %PROGRAMFILES(x86)%\BlockAndSurf-soft\BlockAndSurf_wd.exe 93,184 f9fee268de252d0184b6637da5e9461b 1,821

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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