Backdoor:Win32/Koceg Virus Removal

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

Seeing the Backdoor:Win32/Koceg detection name usually means that your PC is in big danger. This malware can correctly be identified as ransomware – sort of malware which ciphers your files and forces you to pay for their decryption. Removing it requires some specific steps that must be taken as soon as possible.

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Backdoor:Win32/Koceg detection is a virus detection you can spectate in your computer. It frequently shows up after the provoking procedures on your computer – opening the suspicious email, clicking the banner in the Internet or mounting the program from unreliable sources. From the instance it appears, you have a short time to do something about it until it begins its malicious activity. And be sure – it is better not to wait for these harmful actions.

What is Backdoor:Win32/Koceg virus?

Backdoor:Win32/Koceg is ransomware-type malware. It looks for the documents on your disk, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this virus also does a lot of harm to your system. It changes the networking settings in order to stop you from looking for the elimination guidelines or downloading the anti-malware program. In rare cases, Backdoor:Win32/Koceg can additionally prevent the launching of anti-malware programs.

Backdoor:Win32/Koceg Summary

Summarizingly, Backdoor:Win32/Koceg virus actions in the infected PC are next:

  • Sample contains Overlay data;
  • HTTPS urls from behavior.;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • The executable is compressed using UPX;
  • Authenticode signature is invalid;
  • Attempts to modify proxy settings;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Ciphering the documents located on the target’s drive — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of security tools

Ransomware has been a nightmare for the last 4 years. It is hard to picture a more damaging malware for both individuals and companies. The algorithms used in Backdoor:Win32/Koceg (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy currently exists, and possibly will exist. But that virus does not do all these terrible things without delay – it may take up to several hours to cipher all of your files. Thus, seeing the Backdoor:Win32/Koceg detection is a clear signal that you must begin the clearing procedure.

Where did I get the Backdoor:Win32/Koceg?

Common ways of Backdoor:Win32/Koceg spreading are typical for all other ransomware variants. Those are one-day landing sites where victims are offered to download the free app, so-called bait e-mails and hacktools. Bait e-mails are a quite modern method in malware distribution – you get the email that mimics some routine notifications about deliveries or bank service conditions modifications. Inside of the email, there is an infected MS Office file, or a link which leads to the exploit landing site.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks fairly simple, but still requires tons of recognition. Malware can hide in different spots, and it is much better to prevent it even before it goes into your computer than to rely on an anti-malware program. Common cybersecurity awareness is just an important item in the modern world, even if your relationship with a computer remains on YouTube videos. That can keep you a lot of money and time which you would spend while searching for a solution.

Backdoor:Win32/Koceg malware technical details

File Info:

name: EDAA35FD716BBE84C27C.mlw
path: /opt/CAPEv2/storage/binaries/46b0c67f53f3df566142341628412363d0e43bbe08f76ba07331b67e79713d1d
crc32: F425B116
md5: edaa35fd716bbe84c27cc75c683901a7
sha1: b3934de9389d8be2f5e486fff06984c25cba693d
sha256: 46b0c67f53f3df566142341628412363d0e43bbe08f76ba07331b67e79713d1d
sha512: 89b5fd9a8b050931480d75351bb275163d5ca69114fcda61ca179f692bbf760678447620f19cf0e6c06fb69bf78269da77a1afb198523aa1f0419a3454461223
ssdeep: 12288:HJy8eeC+ivN63X+m+m+m+dz+BqA+Fu+G+4oI+m+M:HQ8eeGA+ooa
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11BD41273A74B6B17D645FC3BF37E9264042665B0ADC3D9E0A65EF2BB80B1C210186F58
sha3_384: d4f627d1ba3b3bccdc46cf49d525d083336b7dca5acc862f3c2cbfe6d5952cd7e49fecbffec9b5149296b653b672d0ee
ep_bytes: 60be000041008dbe0010ffff5783cdff
timestamp: 2008-03-03 22:24:20

Version Info:

0: [No Data]

Backdoor:Win32/Koceg also known as:

Elasticmalicious (moderate confidence)
K7AntiVirusEmailWorm ( 000415851 )
K7GWEmailWorm ( 000415851 )
RisingTrojan.Agent!1.6618 (CLOUD)
EmsisoftTrojan.Downloader.Small.AAKR (B)
CynetMalicious (score: 100)
MAXmalware (ai score=83)
SentinelOneStatic AI – Malicious PE
AVGWin32:Injecter-AT [Trj]
AvastWin32:Injecter-AT [Trj]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Backdoor:Win32/Koceg?

Backdoor:Win32/Koceg malware is incredibly difficult to eliminate manually. It stores its data in multiple locations throughout the disk, and can restore itself from one of the parts. In addition, a lot of modifications in the windows registry, networking setups and Group Policies are pretty hard to locate and revert to the original. It is far better to make use of a specific program – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the best for virus elimination objectives.

Remove Backdoor:Win32/Koceg with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Trojans as shown from our tests with the software, and we assure you that it can remove Backdoor:Win32/Koceg as well as other malware hiding on your computer.

Gridinsoft Anti-Malware - Main Screen

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.


3.Follow the installation setup wizard's instructions diligently.

Gridinsoft Setup Wizard

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Scan for Backdoor:Win32/Koceg Trojans

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

The Backdoor:Win32/Koceg was Found

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

The Backdoor:Win32/Koceg has been removed

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “Backdoor:Win32/Koceg” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

Trojan Killer - Main View

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website ( and download Trojan Killer to a computer that is not infected.

Download Trojan Killer

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

Install Trojan Killer to Removable Drive

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Click Update Button

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Searching Backdoor:Win32/Koceg Virus

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

Searching Backdoor:Win32/Koceg Finished

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Restart needed

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing Backdoor:Win32/Koceg and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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