Infection Windows 7, Mozilla.zip, Logs..

[criza]

Hello, so I had a weird error message popping up in my Windows 7 x64 so I ran all the available security tools, and I unfortunately found a couple of infections. The strangest thing was that there was a Mozilla.zip (with the content of the Firefox /AppData files) in my Roaming folder created last night, so I was wondering if my passwords have been stolen, as I save a lot of them in Firefox and I had no Master Password? I would be also grateful if anyone could check my log files, but I guess my system is clean now, only the Mozilla.zip bugs me.....

 

 

Malwarebytes.txt

AdwCleaner[S0].txt

FRST.txt

Addition.txt

ComboFix.txt

HitmanPro_20171024_1332.log

Edited October 24, 2017 by criza

[Aura]

Hi criza 

My name is Aura and I'll be assisting you with your malware issue. Since we'll be working together, you can call me Aura or Yoan, which is my real name, it's up to you! Now that we've broke the ice, I'll just ask you a few things during the time we'll be working together to clean your system and get it back to an operational state.

• As you'll notice, the logs we are asking for here are quite lenghty, so it's normal for me to not reply exactly after you post them. This is because I need some time to analyse them and then act accordingly. However, I'll always reply within 24 hours, 48 hours at most if something unexpected happens
• As long as I'm assisting you on Malwarebytes Forums, in this thread, I'll ask you to not seek assistance anywhere else for any issue related to the system we are working on. If you have an issue, question, etc. about your computer, please ask it in this thread and I'll assist you
• The same principle applies to any modifications you make to your system, I would like you to ask me before you do any manipulations that aren't in the instructions I posted. This is to ensure that we are operating in sync and I know exactly what's happening on your system
• If you aren't sure about an instruction I'm giving you, ask me about it. This is to ensure that the clean-up process goes without any issue. I'll answer you and even give you more precise instructions/explanations if you need. There's no shame in asking questions here, better be safe than sorry!
• If you don't reply to your thread within 3 days, I'll bump this thread to let you know that I'm waiting for you. If you don't reply after 5 days, it'll be closed. If you return after that period, you can send me a PM to get it unlocked and we'll continue where we left off;
• Since malware can work quickly, we want to get rid of them as fast as we can, before they make unknown changes to the system. This being said, I would appreciate if you could reply to this thread within 24 hours of me posting. This way, we'll have a good clean-up rhythm and the chances of complications will be reduced
• I'm against any form of pirated, illegal and counterfeit software and material. So if you have any installed on your system, I'll ask you to uninstall them right now. You don't have to tell me if you indeed had some or not, I'll give you the benefit of the doubt. Plus, this would be against Malwarebytes Forums's rules
• In the end, you are the one asking for assistance here. So if you wish to go a different way during the clean-up, like format and reinstall Windows, you are free to do so. I would appreciate you to let me know about it first, and if you need, I can also assist you in the process
• I would appreciate if you were to stay with me until the end, which means, until I declare your system clean. Just because your system isn't behaving weirdly anymore, or is running better than before, it doesn't mean that the infection is completely gone
  This being said, I have a full time job so sometimes it'll take longer for me to reply to you. Don't worry, you'll be my first priority as soon as I get home and have time to look at your thread

This being said, it's time to clean-up some malware, so let's get started, shall we? 

IMPORTANT NOTE: One or more of the identified infections is a backdoor Trojan.

Backdoor Trojans, Botnets, and IRCBots are very dangerous because they compromise system integrity by making changes that allow it to be used by the attacker for malicious purposes. They can disable your anti-virus and security tools to prevent detection and removal. Remote attackers use backdoors as a means of accessing and taking control of a computer that bypasses security mechanisms. This type of exploit allows them to steal sensitive information like passwords, personal and financial data which is then sent back to the hacker. Read Danger: Remote Access Trojans.

You should disconnect the computer from the Internet and from any networked computers until it is cleaned. If your computer was used for online banking, paying bills, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for taxes, email, eBay, paypal and any other online activities. You should consider them to be compromised and change passwords from a clean computer, not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified immediately of the possible security breach. Failure to notify your financial institution and local law enforcement can result in refusal to reimburse funds lost due to fraud or similar criminal activity. If using a router, you need to reset it with a strong logon/password before connecting again.

Although the infection has been identified and may be removed, your machine has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume the computer is secure even if the malware appears to have been removed. In some instances an infection may have caused so much damage to your system that it cannot be successfully cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:

• When should I re-format? How should I reinstall?
• Where to draw the line? When to recommend a format and reinstall?

This is what Jesper M. Johansson, Security Program Manager at Microsoft TechNet has to say: Help: I Got Hacked. Now What Do I Do?.

  Quote

The only way to clean a compromised system is to flatten and rebuild. Thats right. If you have a system that has been completely compromised, the only thing you can do is to flatten the system (reformat the system disk) and rebuild it from scratch (reinstall Windows and your applications).

Therefore you have two options: either we continue with the clean-up, though it is impossible to be 100% sure that your system still won't be backdoored at the end, or you can do a nuke and pave (format and reinstall) of Windows. I can assist you with either option.

Also, it is as you say. Your passwords have been compromised and all of them should be changed as soon as possible. And you should also enable 2FA on all services, websites, etc. allowing you to do so.

[criza]

Hello Aura, so I would like to clean-up the system with your help. Thank you.

[Aura]

Alright, follow the instructions below.

Farbar Recovery Scan Tool (FRST) - Fix mode
Follow the instructions below to execute a fix on your system using FRST, and provide the log in your next reply.

• Download the attached fixlist.txt file, and save it on your Desktop (or wherever your FRST.exe/FRST64.exe executable is located)
• Right-click on the FRST executable and select Run as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
• Click on the Fix button
  
• On completion, a message will come up saying that the fix has been completed and it'll open a log in Notepad
• Copy and paste its content in your next reply
  

fixlist.txt

[criza]

Instead of a copy & paste I attached the log file. Thank you again.

Fixlog.txt

[Aura]

That works too. Now let's run a scan with RogueKiller.

RogueKiller

• Download the right version of RogueKiller for your Windows version (32 or 64-bit)
• Once done, move the executable file to your Desktop, right-click on it and select Run as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
• Click on the Start Scan button in the right panel, which will bring you to another tab, and click on it again (this time it'll be in the bottom right corner)
• Wait for the scan to complete
• On completion, the results will be displayed
• Check every single entry (threat found), and click on the Remove Selected button
• On completion, the results will be displayed. Click on the Open Report button in the bottom left corner, followed by the Open TXT button (also in the bottom left corner)
• This will open the report in Notepad. Copy/paste its content in your next reply
  

[criza]

Here you go, I attached a text file with the results. Thanks so far

RogueKiller.txt

Edited October 24, 2017 by criza

[criza]

BTW, I know the attack occurred at 03:40am this morning, (also) because the Mozilla.zip was created at that time. So I scanned all files on drive C: that were created in that hour. I found, now after the clean-up, three files: pluginreg.dat in the Mozilla profile folder, 1508809200781.eaa612bb-afda-4951-a093-1abeb3e3891d.sync.jsonlz4 in a subdirectory (datareporting/archived/2017-10/ and also there a second file: 1508809200927.2314ff81-a146-4ebb-a35d-9436ac7a497a.main.jsonlz4

When I searched for modified files during that hour (it gives me 19 additional files, location is C:\Users\*****\AppData\Local\Google\Chrome\User Data\CertificateTransparency\549\_platform_specific\all\sths and the file endings are .sth, does this mean something?

 

[criza]

 @Aura?

[Aura]

Thank you for the log.

As for my delay, as stated in the beginning:

Quote

• This being said, I have a full time job so sometimes it'll take longer for me to reply to you. Don't worry, you'll be my first priority as soon as I get home and have time to look at your thread

I'm currently working on a project at work that requires me to be away from home, so my reply time will get delayed during that time.

Now, can you run a new scan with Malwarebytes and tell me if it detects anything? If it does, please copy/paste the log here.

[criza]

Ok, I'll be patient..

I did run Malwarebytes again, it didn't find anything! Best Regards

[Aura]

Awesome

Just keep in mind that this doesn't mean that your system still isn't compromised. The only real solution in your case would be a reinstall and format.

Are there any other issues to address, or that was it?

[Aura]

Hi criza,

Are you still with me?

[Aura]

Due to the lack of feedback this topic is closed to prevent others from posting here. If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this thread with your request. This applies only to the originator of this thread.Other members who need assistance please start your own topic in a new thread. Thanks!