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Removal instructions for BBjoin

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Content is republished with permission from Malwarebytes.

What is BBjoin?

The Malwarebytes research team has determined that BBjoin is adware. These adware applications display advertisements not originating from the sites you are browsing.

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

You may see this entry in your list of installed programs:


and you may see these Scheduled Tasks:


How did BBjoin get on my computer?

Adware applications use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove BBjoin?

Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted program.
  • Please download Malwarebytes Anti-Malware to your desktop.
  • Double-click mbam-setup-version.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to the following:
    • Enable free trial of Malwarebytes Anti-Malware Premium
    • Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • If an update is found, you will be prompted to download and install the latest version.
  • Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
  • 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 BBjoin?
  • No, Malwarebytes' Anti-Malware removes BBjoin completely.
  • This PUP creates some scheduled tasks. You can read here how to check for and, if necessary, remove Scheduled Tasks.
How would the full version of Malwarebytes Anti-Malware 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 Anti-Malware would have protected you against the BBjoin adware. �It would have warned you before the rogue could install itself, giving you a chance to stop it before it became too late.


Technical details for experts

You will see these signs in a HijackThis log:
O4 - HKCU\..\Run: [bbjoin_crr_uninst] C:\Program Files\bbjoin\bbjoin\\bbjoin.exe
Possible signs in FRST logs:
 (Pay By Ads LTD) C:\Program Files\bbjoin\bbjoin\\bbjoin.exe
 (Pay By Ads LTD) C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe
 HKCU\...\Run: [bbjoin_crr_uninst] => C:\Program Files\bbjoin\bbjoin\\bbjoin.exe [647936 2015-04-27] (Pay By Ads LTD)
 () C:\Program Files\bbjoin

bbjoin_crr_uninst (HKU\S-1-5-21-4016700205-1717049133-1125222536-1001\...\bbjoin_prdct_uninst) (Version:  - bbjoin_cmpny)
Task: {952F523A-3413-4E5D-BD1B-6089FE584681} - System32\Tasks\bbjoin_crr_uninst Updater => C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe [2015-04-27] (Pay By Ads LTD)
Task: {EA7CB80F-20C0-493D-B6B0-39A39BC5B034} - System32\Tasks\bbjoin_crr_uninst => C:\Program Files\bbjoin\bbjoin\\bbjoin.exe [2015-04-27] (Pay By Ads LTD)
Alterations made by the installer:
File system details  
    Adds the folder C:\Program Files\bbjoin\bbjoin\
       Adds the file app.ini"="4/27/2015 9:09 AM, 533 bytes, A
       Adds the file bbjoin.exe"="4/27/2015 9:09 AM, 647936 bytes, A
       Adds the file bbjsetup.exe"="4/27/2015 9:09 AM, 455424 bytes, A
       Adds the file chromext64.dll"="4/27/2015 9:09 AM, 342016 bytes, A
       Adds the file fj3mK9pm.dll"="4/27/2015 9:09 AM, 288256 bytes, A
       Adds the file hlpr64.exe"="4/27/2015 9:09 AM, 91648 bytes, A
       Adds the file iWekfeih.dll"="4/27/2015 9:09 AM, 305664 bytes, A
       Adds the file res.dll"="4/27/2015 9:09 AM, 194560 bytes, A
    In the existing folder C:\Windows\System32\Tasks
       Adds the file bbjoin_crr_uninst"="4/27/2015 9:09 AM, 3454 bytes, A
       Adds the file bbjoin_crr_uninst Updater"="4/27/2015 9:09 AM, 3458 bytes, A

Registry details  
       "APPORDR"="REG_SZ", "4BA8C7CBE64F92CC"
       "country"="REG_SZ", ""
       "lng"="REG_SZ", ""
       "prm1"="REG_SZ", ""
       "prm2"="REG_SZ", ""
       "prm3"="REG_SZ", ""
       "prm4"="REG_SZ", ""
       "prm5"="REG_SZ", ""
       "bbjoin1"="REG_SZ", "C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe"
    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION]
       "bbjoin.exe"="REG_DWORD", 19000
       "bbjsetup.exe"="REG_DWORD", 19000
       "bbjoin_crr_uninst"="REG_SZ", "C:\Program Files\bbjoin\bbjoin\\bbjoin.exe"
       "DisplayIcon"="REG_SZ", ""C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe""
       "DisplayName"="REG_SZ", "bbjoin_crr_uninst"
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "bbjoin_cmpny"
       "UninstallString"="REG_SZ", ""C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe" /uninstl"

Malwarebytes Anti-Malware log:
Malwarebytes Anti-Malware

Scan Date: 4/27/2015
Scan Time: 9:24:52 AM
Logfile: mbamBBjoin.txt
Administrator: Yes

Malware Database: v2015.04.26.05
Rootkit Database: v2015.04.21.01
License: Free
Malware Protection: Disabled
Malicious Website Protection: Disabled
Self-protection: Disabled

OS: Windows 7 Service Pack 1
CPU: x86
File System: NTFS
User: Malwarebytes

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 286917
Time Elapsed: 3 min, 59 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 1
PUP.Optional.PayByAds.A, C:\Program Files\bbjoin\bbjoin\\bbjoin.exe, 1592, Delete-on-Reboot, [0c21442d4149e2546a7969d424e27f81]

Modules: 0
(No malicious items detected)

Registry Keys: 2
PUP.Optional.KeepMySearch.A, HKCU_Classes\keepmysearch, Quarantined, [61cc5f128efc999d6ddcdefc778c20e0], 
PUP.Optional.BBJoin.A, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\bbjoin_prdct_uninst, Quarantined, [c469caa72862cd6928b59d27020126da], 

Registry Values: 1
PUP.Optional.PayByAds.A, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|bbjoin_crr_uninst, C:\Program Files\bbjoin\bbjoin\\bbjoin.exe, Quarantined, [0c21442d4149e2546a7969d424e27f81]

Registry Data: 0
(No malicious items detected)

Folders: 2
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin, Delete-on-Reboot, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\, Delete-on-Reboot, [c469caa72862cd6928b59d27020126da], 

Files: 9
PUP.Optional.PayByAds.A, C:\Program Files\bbjoin\bbjoin\\bbjoin.exe, Delete-on-Reboot, [0c21442d4149e2546a7969d424e27f81], 
PUP.Optional.KeepMySearch.SID.A, C:\Users\{username}\Desktop\BBjoin.exe, Quarantined, [b67776fb7812dd591e62bb8919ed14ec], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\app.ini, Quarantined, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\bbjsetup.exe, Delete-on-Reboot, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\chromext64.dll, Quarantined, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\fj3mK9pm.dll, Quarantined, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\hlpr64.exe, Quarantined, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\iWekfeih.dll, Quarantined, [c469caa72862cd6928b59d27020126da], 
PUP.Optional.BBJoin.A, C:\Program Files\bbjoin\bbjoin\\res.dll, Quarantined, [c469caa72862cd6928b59d27020126da], 

Physical Sectors: 0
(No malicious items detected)

As mentioned before the full version of Malwarebytes Anti-Malware 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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