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What is Search By PrsstMusic?

The Malwarebytes research team has determined that Search By PrsstMusic 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.

How do I know if my computer is affected by Search By PrsstMusic?

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

main.png

and these warnings during install:

warning1.png

warning2.png

warning3.png

You will see this icon in your Chrome menu-bar:

icons.png

and this changed setting:

warning5.png

How did Search By PrsstMusic get on my computer?

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

webstore.png

How do I remove Search By PrsstMusic?

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

  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.

Is there anything else I need to do to get rid of Search By PrsstMusic?

  • No, Malwarebytes removes Search By PrsstMusic completely.

How would the full version of Malwarebytes help protect me?

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

Technical details for experts

Possible signs in FRST logs:

 

CHR DefaultSearchURL: Default -> hxxps://www.blpsearch.com/search?sid=842&src=ds&p={searchTerms}
CHR DefaultSearchKeyword: Default -> Default-Search
CHR Extension: (PrsstMusic) - C:\Users\Metallica\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce [2019-03-19]

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\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0
       Adds the file Archive created by free jZipFree.url"="1/29/2018 5:23 PM, 58 bytes, A
       Adds the file manifest.json"="3/19/2019 9:29 AM, 1938 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\_metadata
       Adds the file computed_hashes.json"="3/19/2019 9:29 AM, 628 bytes, A
       Adds the file verified_contents.json"="7/26/2018 1:02 PM, 2047 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\icons
       Adds the file PrsstMusic-128.png"="3/19/2019 9:29 AM, 4621 bytes, A
       Adds the file PrsstMusic-16.png"="3/19/2019 9:29 AM, 407 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\js
       Adds the file background.js"="7/26/2018 12:58 PM, 13891 bytes, A
       Adds the file brand.js"="7/26/2018 1:00 PM, 640 bytes, A
       Adds the file contentScript.js"="7/26/2018 12:58 PM, 938 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings]
       "lahegkdkjbonnklbghcfkihdflfljfce"="REG_SZ", "8CDC0E79021410EEDD4340FDE483B8B5538B1A7F02BBFF8C82C2361624406404"

Malwarebytes log:
 

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 3/19/19
Scan Time: 9:39 AM
Log File: 71c55512-4a22-11e9-a8f1-00ffdcc6fdfc.json

-Software Information-
Version: 3.7.1.2839
Components Version: 1.0.538
Update Package Version: 1.0.9742
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: 235346
Threats Detected: 18
Threats Quarantined: 18
Time Elapsed: 3 min, 27 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
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
PUP.Optional.BlpSearch.Generic, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|lahegkdkjbonnklbghcfkihdflfljfce, Quarantined, [14608], [443081],1.0.9742

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 5
PUP.Optional.BlpSearch.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\_metadata, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\icons, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\js, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\LAHEGKDKJBONNKLBGHCFKIHDFLFLJFCE\1.0.842.368_0, Quarantined, [14608], [443081],1.0.9742

File: 12
PUP.Optional.BlpSearch.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\LAHEGKDKJBONNKLBGHCFKIHDFLFLJFCE\1.0.842.368_0\JS\BRAND.JS, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\icons\PrsstMusic-128.png, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\icons\PrsstMusic-16.png, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\js\background.js, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\js\contentScript.js, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\_metadata\computed_hashes.json, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\_metadata\verified_contents.json, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\Archive created by free jZipFree.url, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch.Generic, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\lahegkdkjbonnklbghcfkihdflfljfce\1.0.842.368_0\manifest.json, Quarantined, [14608], [443081],1.0.9742
PUP.Optional.BlpSearch, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [403], [496134],1.0.9742

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

The full version of Malwarebytes can actively protect your computer against threats.
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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