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What is StreamSiteSearch?

The Malwarebytes research team has determined that StreamSiteSearch is a search hijacker. These so-called "hijackers" manipulate your browser(s), for example to change your startpage or searchscopes, so that the affected browser visits their site or one of their choice.
This particular one is a search hijacker and uses web push notifications.


How do I know if my computer is affected by StreamSiteSearch?

You may see this entry in your list of installed Chrome extensions:


and these warnings during install:




and these changed settings:



How did StreamSiteSearch get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was downloaded from the webstore:


after a redirect from their website:


How do I remove StreamSiteSearch?

Our program Malwarebytes can detect and remove this potentially unwanted program.

  • Please download Malwarebytes for Windows to your desktop.
  • Double-click MBSetup.exe and follow the prompts to install the program.
  • When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  • Click on the Get started button.
  • Click Scan to start a Threat Scan.
  • When the scan is finished click Quarantine to remove the found threats.
  • Reboot the system if prompted to complete the removal process.

Is there anything else I need to do to get rid of StreamSiteSearch?

  • No, Malwarebytes removes StreamSiteSearch completely.
  • If you have allowed the notifications you can read here how to disable them.

How would the full version of Malwarebytes help protect me?

We hope our application and this guide have helped you eradicate this hijacker.

As you can see below the full version of Malwarebytes would have protected you against the StreamSiteSearch hijacker. It would have blocked their website, giving you a chance to stop before it became too late.




Technical details for experts

Possible signs in FRST logs:


CHR Notifications: Default -> hxxps://get.streamssitesearch.com
CHR DefaultSearchURL: Default -> hxxps://feed.streamssitesearch.com/?q={searchTerms}&publisher=streamsitesearch&barcodeid=578210000000000
CHR DefaultSearchKeyword: Default -> StreamSiteSearch
CHR DefaultSuggestURL: Default -> hxxps://api.streamssitesearch.com/suggest/get?q={searchTerms}
CHR Extension: (StreamSiteSearch) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp [2020-11-19]

Alterations made by the installer:

File system details [View: All details] (Selection)
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp\1.1.0_0
       Adds the file manifest.json"="11/19/2020 8:53 AM, 2138 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp\1.1.0_0\_metadata
       Adds the file computed_hashes.json"="11/19/2020 8:53 AM, 6255 bytes, A
       Adds the file verified_contents.json"="7/26/2020 9:32 AM, 2049 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp\1.1.0_0\images
       Adds the file logo-white-text.png"="7/26/2020 9:32 AM, 0 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp\1.1.0_0\images\icons
       Adds the file 128x128.png"="11/19/2020 8:53 AM, 3983 bytes, A
       Adds the file 16x16.png"="11/19/2020 8:53 AM, 442 bytes, A
       Adds the file 64x64.png"="11/19/2020 8:53 AM, 2030 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\mfmpahmdncaiocgioclbgoahlfalfhnp\1.1.0_0\scripts
       Adds the file background.js"="7/26/2020 9:32 AM, 514641 bytes, A
       Adds the file sitecontent.js"="7/26/2020 9:32 AM, 77 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp
       Adds the file 000003.log"="11/19/2020 8:53 AM, 0 bytes, A
       Adds the file CURRENT"="11/19/2020 8:53 AM, 16 bytes, A
       Adds the file LOCK"="11/19/2020 8:53 AM, 0 bytes, A
       Adds the file LOG"="11/19/2020 8:53 AM, 0 bytes, A
       Adds the file MANIFEST-000001"="11/19/2020 8:53 AM, 41 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Web Applications\_crx_mfmpahmdncaiocgioclbgoahlfalfhnp
       Adds the file StreamSiteSearch.ico"="11/19/2020 8:53 AM, 173700 bytes, A
       Adds the file StreamSiteSearch.ico.md5"="11/19/2020 8:53 AM, 16 bytes, A

Registry details [View: All details] (Selection)
       "mfmpahmdncaiocgioclbgoahlfalfhnp"="REG_SZ", "8CD0EB37C7FA601958F8929501077991B843D1E42AA5E8656F332D997F317D8A"

Malwarebytes log:


-Log Details-
Scan Date: 11/19/20
Scan Time: 9:06 AM
Log File: 1e36cc5c-2a3e-11eb-846b-080027235d76.json

-Software Information-
Components Version: 1.0.1112
Update Package Version: 1.0.33088
License: Premium

-System Information-
OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {computername}\{username}

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 232008
Threats Detected: 13
Threats Quarantined: 13
Time Elapsed: 3 min, 57 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 1
Adware.SearchEngineHijack.Generic, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|mfmpahmdncaiocgioclbgoahlfalfhnp, Quarantined, 15627, 799722, , , , , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp, Quarantined, 15627, 799722, , , , , , 
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\MFMPAHMDNCAIOCGIOCLBGOAHLFALFHNP, Quarantined, 15627, 799722, 1.0.33088, , ame, , , 

File: 10
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, 15627, 799722, , , , , 3B74D8F8E71A524B3A1D0795C8D8A1F3, 8A9C700CA2BD1CE4EA6C951EC460414AD9353AECDB797D814502AA4A1224986B
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, 15627, 799722, , , , , 97C0BB878211660882CB900E620ED1DB, 193EBE9372B5A1C10DA088261DABB0D162B4B298D598FDFB451A30B245BF8684
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\000003.log, Quarantined, 15627, 799722, , , , , 2DEB2232413E453416F2178C08802A7C, 63BFEC4AEEB61D89D01498A40039CBFBF8853040A6ACBA587061B974EB0323DE
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\CURRENT, Quarantined, 15627, 799722, , , , , 46295CAC801E5D4857D09837238A6394, 0F1BAD70C7BD1E0A69562853EC529355462FCD0423263A3D39D6D0D70B780443
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\LOCK, Quarantined, 15627, 799722, , , , , , 
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\LOG, Quarantined, 15627, 799722, , , , , 2D80310F594F5A7ED18B2DA7E5841399, 8CA46DA6D24FBD3EF6CCBE649902185104D471C4EC474CB1E5FD5DA127A3C6CD
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\LOG.old, Quarantined, 15627, 799722, , , , , 422D24977A09F33D44E22B2EBA84647D, ABB67C981596216D2E77098BB63BAD19FED39FC252E6A2F96AE9BE8FDD61CA3F
Adware.SearchEngineHijack.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\mfmpahmdncaiocgioclbgoahlfalfhnp\MANIFEST-000001, Quarantined, 15627, 799722, , , , , 5AF87DFD673BA2115E2FCF5CFDB727AB, F9D31B278E215EB0D0E9CD709EDFA037E828F36214AB7906F612160FEAD4B2B4
Adware.SearchEngineHijack.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\MFMPAHMDNCAIOCGIOCLBGOAHLFALFHNP\1.1.0_0\MANIFEST.JSON, Quarantined, 15627, 799722, 1.0.33088, , ame, , 0A501CE912ACDCDE0A01C3E98D750299, F9F3001D23258B257E109AB840A588F4E4FD14C584AB904A784B4A2AB942C965
PUP.Optional.PushNotifications, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, 203, 846248, 1.0.33088, , ame, , 97C0BB878211660882CB900E620ED1DB, 193EBE9372B5A1C10DA088261DABB0D162B4B298D598FDFB451A30B245BF8684

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


As mentioned before the full version of Malwarebytes could have protected your computer against this threat.
We use different ways of protecting your computer(s):

  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention

Save yourself the hassle and get protected.

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