svchost.exe from Russia (with malice)

[mintytoes]

My PC got infected today with a trojan (hopefully not a rootkit) that is constantly downloading svchost.exe from a http address that is tracked to Russia. Apparently it's some type of coin miner. I ran everything, but nothing could find what's downloading the svchost.exe.

 

Date/Time,Website Address,Rating,Response,Detected By

1/25/2015 12:57 AM,

http://m.9846f2d7e24272f38e6f66bf0ff8d7cf.com/mro1_cpu/svchost.exe,

Dangerous Page (49),Blocked,Web Reputation Ratings

 

I'm only able to prevent the download and execution of the malware by blocking the IP in the firewall. If I disable the rule, that file gets downloaded right back. Thus, I need to find a way to track down the source of the infection.

[TwinHeadedEagle]

Hello,
    
 
They call me TwinHeadedEagle around here, and I'll be working with you.
 
     
    
Before we start please read and note the following:

• Limit your internet access to posting here, some infections just wait to steal typed-in passwords.
• Please be patient. I know it is frustrating when your PC isn't working properly, but malware removal takes time.
• Don't run any scripts or tools on your own, unsupervised usage may cause more harm than good.
• Do not paste the logs in your posts, attachments make my work easier. There is a More reply options button, that gives you Upload Files option below which you can use to attach your reports. Always attach reports from all tools.
• Always execute my instructions in given order. If for some reason you cannot completely follow one instruction, inform me about that.
• Stay with me to the end, the absence of symptoms doesn't mean that your machine is fully operational.
• Note that we may live in totally different time zones, what may cause some delays between answers.
• Do not ask for help for your business PC. Companies are making revenue via computers, so it is good thing to pay someone to repair it.
• If I don't hear from you within 3 days from this initial or any subsequent post, then this thread will be closed.

 I can't foresee everything, so if anything unexpected happens, please stop and inform me!
 There are no silly questions. Never be afraid to ask if in doubt!
 
 
 
   Rules and policies
 
We won't support any piracy. 
That being told, if any evidence of illegal OS, software, cracks/keygens or any other will be revealed, any further assistance will be suspended. If you are aware that there is this kind of stuff on your machine, remove it before proceeding!
The same applies to any use of P2P software: uTorrent, BitTorrent, Vuze, Kazaa, Ares... We don't provide any help for P2P, except for their removal. All P2P software has to be uninstalled or at least fully disabled before proceeding!
 
Failure to follow these guidelines will result with closing your topic and withdrawning any assistance.
 
 
 
 

Please download Farbar Recovery Scan Tool and save it to your desktop.
 
Note: You need to run the version compatibale with your system. If you are not sure which version applies to your system download both of them and try to run them.
Only one of them will run on your system, that will be the right version.

• Double-click to run it. When the tool opens click Yes to disclaimer.
• Press Scan button.
• It will make a log (FRST.txt) in the same directory the tool is run. Please attach it to your reply.
• The first time the tool is run, it makes also another log (Addition.txt). Please attach it to your reply.

[mintytoes]

Thanks! Farbar found it. I was wondering how it was by passing malware scanners. Apparently it was using the task scheduler to exec a encrypted vbs file.

 

Task: {0D2EE525-FF55-4D34-B362-9361E02A1AAB} - System32\Tasks\Origin => C:\Users\Mint\AppData\Roaming\Origin\update.vbe [2015-01-24] () <==== ATTENTION

[TwinHeadedEagle]

Are you going to upload requested reports?

[mintytoes]

Thanks, but I'm good not. Process explorer shows no suspicious programs. NetworkMiner shows no suspicious connections. 

[AdvancedSetup]

Since this issue is resolved I will close the thread to prevent others from posting here. If you need assistance please start your own topic and someone will be happy to assist you.