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Hitman Pro detects dropbox.exe on startup: False positive?


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#1 peteraloha

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Posted 17 December 2014 - 10:31 AM

I have dropbox installed on my system and Hitman Pro hasn't had any issue with it until 2 days ago: It now tells me that a virus "dropbox.exe" is trying to attack my system and recommends I scan with Hitman Pro. 

 

Full scan with Hitman Pro comes out clean, but the process above repeats on every startup now. 

 

Thanks for any input. 

 

Peter



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#2 Broni

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Posted 17 December 2014 - 11:59 AM

Welcome aboard p22002758.gif

 

p22002970.gif Download Security Check from here or here and save it to your Desktop.

  • Double-click SecurityCheck.exe
  • Follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.

NOTE 1. If one of your security applications (e.g., third-party firewall) requests permission to allow DIG.EXE access the Internet, allow it to do so.
NOTE 2. SecurityCheck may produce some false warning(s), so leave the results reading to me.
NOTE 3. If you receive UNSUPPORTED OPERATING SYSTEM! ABORTED! message restart computer and Security Check should run

p22002970.gif Please download Farbar Service Scanner (FSS) and run it on the computer with the issue.
  • Make sure the following options are checked:
    • Internet Services
    • Windows Firewall
    • System Restore
    • Security Center/Action Center
    • Windows Update
    • Windows Defender
    • Other Services
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  • It will create a log (FSS.txt) in the same directory the tool is run.
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p22002970.gif Please download MiniToolBox and run it.

Checkmark following boxes:
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Click Go and post the result.

p22002970.gif Please download Malwarebytes Anti-Malware (MBAM) to your desktop.
NOTE. If you already have MBAM 2.0 installed scroll down.

  • Double-click mb3-setup-1878.1878-3.3.1.2183.exe and follow the prompts to install the program.
  • At the end, be sure a checkmark is placed next to the following:

    • Launch Malwarebytes Anti-Malware
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  • Click Finish.
  • On the Dashboard, click the 'Update Now >>' link
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If you already have MBAM 2.0 installed:

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How to get logs:
(Export log to save as txt)


  • After the restart once you are back at your desktop, open MBAM once more.
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(Copy to clipboard for pasting into forum replies or tickets)

  • After the restart once you are back at your desktop, open MBAM once more.
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p22002970.gifDownload 51a5f31352b88-icon_MBAR.pngMalwarebytes Anti-Rootkit (MBAR) to your desktop.
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  • Double click on downloaded file. OK self extracting prompt.
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NOTE. If you see This version requires you to completely exit the Anti Malware application message right click on the Malwarebytes Anti-Malware icon in the system tray and click on Exit.

p22002970.gif Please download Rkill (courtesy of BleepingComputer.com) to your desktop.
There are 2 different versions. If one of them won't run then download and try to run the other one.
You only need to get one of these to run, not all of them. You may get warnings from your antivirus about this tool, ignore them or shutdown your antivirus.

rKill.exe: http://www.bleepingcomputer.com/download/rkill/dl/10/
iExplore.exe (renamed rKill.exe): http://www.bleepingcomputer.com/download/rkill/dl/11/

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  • A black DOS box will briefly flash and then disappear. This is normal and indicates the tool ran successfully.
  • If not, delete the file, then download and use the one provided in Link 2.
  • Do not reboot until instructed.
  • If the tool does not run from any of the links provided, please let me know.


If normal mode still doesn't work, run the tool from safe mode.

When the scan is done Notepad will open with rKill log.
Post it in your next reply.

NOTE. rKill.txt log will also be present on your desktop.

NOTE Do NOT wrap your logs in "quote" or "code" brackets.
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Do NOT edit your reply to post additional logs. Create new reply. I'll not get any email notifications about edits so I won't know you posted something new.


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#3 peteraloha

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Posted 17 December 2014 - 12:08 PM

Hi Broni, 

 

Thank you VERY much for your detailed list of utilities to apply. I have malwarebytes and deployed it and the anti-root kit, and all scans are clean. So are the Hitman Pro scans. So before I keep applying more tools, I thought perhaps there are others out there who h"dave dropbox and hitman pro, and would recommend to "ignore" the warning and confirm my suspected "false positive". That machine also runs a very aggressive "viper" managed Antivirus solution, and it does not recognize/allege hacking attacks by "dropbox.exe".

 

Thanks again for any input you might have!

 

Peter 



#4 mcbsys

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Posted 19 December 2014 - 12:37 PM

A client running HitmanPro.Alert and Dropbox reported getting this alert the same day reported by the OP (Dec. 17). His active Avast did not report an issue. I had him run a Malwarebytes full scan (but not a rootkit scan) and it came back clean. Interesting that Hitman did not log anything in the Application event log, because it does log other things like checking for updates. To my knowledge, he has not received an alert since that one time.

 

Thanks, Peter, for posting back on the results of your scans. That helps me feel more confident that this was a false positive.

 

Mark



#5 peteraloha

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Posted 19 December 2014 - 01:51 PM

Mark, 

 

Thanks, 

 

I had no problem finding an email address for Hitman and they promptly responded: 

 

 
Lisa Turkenburg (Support) 
Dec 18 10:27 
Good day, 
Thank you for contacting us. 
Probably Dropbox is trying to save the files. 
This changes the files, which is protected by Cryptoguard. 
Please temporary disable Cryptoguard when using Dropbox. 
I have informed the developers about this. 
We release a new version of Alert in Q1 of 2015. 
In this version the Dropbox issue is resolved. 
Best regards, 
Lisa
HitmanPro Support

After disabling the Cryptoguard, the pop ups stopped!

 

:-)

 

Happy Holidays, 

 

Peter






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