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How remove undetected ransomware from my Windows PC


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I am c# developer and i am researching on security and i am totally new in this field.  

I figured out some body has hacked my wi-fi really and has connected to it.  
After connect to it he added a rule to my licensed `Eset Internet Securty FireWall` to allow connected new device IP (192.168.1.41).  
My machine os is windows.   
I have both Eset Internet Security + MalwareBytes (Latest Version & Updated & Licensed)  
I grabbed this ip address with eset : 

 Virus Total of 93.184.220.29
And figured Out : 
 

Quote

 

1. svchost.exe
2. lsass.exe
3. vmnat.exe
4. node.exe | Included in this path : "C:\Program Files (x86)\Adobe\Adobe Creative Cloud\CCXProcess\libs\" | as Node.js: Server-side JavaScript

5. FireFox.exe
6. MbamService.exe 

 

node.exe crypto sign attempt

 

Qfy7L.png

All of these files want to connect to that ip.   
Here is some info about that ip :  

Quote

ip : 93.184.220.29  
isp : edgecast.com  
abuse mail :abuse@verizondigitalmedia.com  
IP2Location - 93.184.220.29
os : FreeBSD  
running services :  
  1. bnetgame   
  2. rtmp

I scanned my C drive with Eset Internet Security , MalwareBytes , Norton Rescue Disk in Boot.  
No detection(s) at all.  
I installed wireshark in my machine and figured out there are many suspicious http requests (Get) through my wi-fi.   
Some of them are like this : 

 

Quote

 

User Agent of all these requests is like this : 

Quote

http.user_agent == "Microsoft-CryptoAPI/6.1"

VirusTotal Scan of two of them :   

1 
2

I also have many unknown TCP packets related to that ip and other ips.   
It seems i have infected with a bad `ransomware` that is using many CDNs.   
I blocked CryptoSvcservice in Eset after viewing those http requests.   
I also blocked that ip in firewall.  
But i think this is useless because malicious app is using many ips as well.   
I figured out my PC and my LapTop and my vmware windows machine installed on pc all of them have infected.    
I don't know that was because my wi-fi network or infected USB flash memory.   

PLEASE GIVE ME SOME ADVICE and tell me how can i remove this rat or ransomware or whatever it is from my devices?    
Also tell me how is that possible about my USB flash drive infection.   
My files have n't encrypted yet.   
So i have time to remove this ransomware or whatever it is.

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  • Root Admin

Hello @Vortex_800

If you own your own router you can do the following.

Please ensure that you have the user manual for your router. Then perform a factory reset.

How To Reset Your Router
https://setuprouter.com/networking/how-to-reset-your-router/

 

Depending on one's preferences and the Router's capabilities please consider the following.

  • Disable acceptance of ICMP Pings
  • Change the Default Router password using a Strong Password
  • Use a Strong WiFi password on WPA2  using AES encryption or Enable WPA3 if it is an option.
  • Disable Remote Management
  • Create separate WiFi networks for groups of devices with similar purposes to prevent an entire network of devices from being compromised if a malicious actor is able to gain unauthorized access to one device or network. Example: Keep IoT devices on one network and mobile devices on another.
  • Change the network name (SSID).  Do not use your; Name, Postal address, or other personal information.  Make it unique or whimsical and known to your family/group.
  • Is the Router Firmware up-to-date?  Updating the firmware mitigates exploitable vulnerabilities.
  • Specifically set Firewall rules to BLOCK;   TCP and UDP ports 135 ~ 139, 445, 1234, 3389 and 5555
  • Document passwords created and store them in a safe but accessible location.

 

 

Then do the following so that we can get some logs, please.

 

Please run the following steps and post back the logs as an attachment when ready.
Temporarily disable your antivirus or other security software first. Make sure to turn it back on once the scans are completed.
Temporarily disable Microsoft SmartScreen to download software below if needed. Make sure to turn it back on once the scans are completed.
If you still have trouble downloading the software please click on Reveal Hidden Contents below for examples of how to allow the download.

 

Spoiler
 
 
 
 
Spoiler

When downloading with some browsers you may see a different style of screens that may block FRST from downloading. The program is safe and used hundreds of times a week by many users.

Example of Microsoft Edge blocking the download

image.png

image.png

image.png

 



STEP 01

  • If you already have Malwarebytes installed then open Malwarebytes and click on the Scan button. It will automatically check for updates and run a Threat Scan.
  • If you don't have Malwarebytes installed yet please download it from here and install it.
  • Once installed then open Malwarebytes and select Scan and let it run.
  • Once the scan is completed make sure you have it quarantine any detections it finds.
  • If no detections were found click on the Save results drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If there were detections then once the quarantine has completed click on the View report button, Then click the Export drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If the computer restarted to quarantine you can access the logs from the Detection History, then the History tab. Highlight the most recent scan and double-click to open it. Then click the Export drop-down, then the Export to TXT  button, and save the file as a Text file to your desktop or other location you can find and attach that log on your next reply.
  • If Malwarebytes won't run then please skip to the next step and let me know in your next reply that the scanner would not run.

STEP 02

Please download AdwCleaner by Malwarebytes and save the file to your Desktop.

  • Double-click to run the program
  • Accept the End User License Agreement.
  • Wait until the database is updated.
  • Click Scan Now.
  • When finished, if items are found please click Quarantine.
  • Your PC should reboot now if any items were found.
  • After reboot, a log file will be opened. Attach or Copy its content into your next reply.

 

STEP 03
Please download the Farbar Recovery Scan Tool and save it to your desktop.

Note: You need to run the version compatible with your system. You can check here if you're not sure if your computer is 32-bit or 64-bit

  • Double-click to run it. When the tool opens, click Yes to disclaimer.
  • Press the 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 also makes another log (Addition.txt). If you've, run the tool before you need to place a check mark here each time
  • Please attach the Additions.txt log to your reply as well.
  • On your next reply, you should be attaching frst.txt and additions.txt to your post, every time.

 

Thanks

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  • Root Admin

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 topic with your request.

This applies only to the originator of this topic. Other members who need assistance please start your own topic in a new thread.

Tips to help protect from infection

Thanks

 

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