What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Win32/KillFiles.NLC detection name usually means that your PC is in big danger. This virus can correctly be identified as ransomware – type of malware which encrypts your files and forces you to pay for their decryption. Stopping it requires some unusual steps that must be taken as soon as possible.
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Win32/KillFiles.NLC detection is a virus detection you can spectate in your system. It often shows up after the preliminary activities on your computer – opening the suspicious e-mail, clicking the banner in the Internet or mounting the program from dubious resources. From the instance it appears, you have a short time to do something about it before it begins its malicious action. And be sure – it is better not to await these destructive effects.

What is Win32/KillFiles.NLC virus?

Win32/KillFiles.NLC is ransomware-type malware. It looks for the documents on your disk drives, encrypts it, and then asks you to pay the ransom for receiving the decryption key. Besides making your documents inaccessible, this malware additionally does a ton of damage to your system. It modifies the networking settings in order to stop you from reading the removal articles or downloading the anti-malware program. In rare cases, Win32/KillFiles.NLC can even prevent the launching of anti-malware programs.

Win32/KillFiles.NLC Summary

Summarizingly, Win32/KillFiles.NLC ransomware actions in the infected PC are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Dynamic (imported) function loading detected;
  • The binary contains an unknown PE section name indicative of packing;
  • Creates an autorun.inf file;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents kept on the target’s disk — so the victim cannot check these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of security tools

Ransomware has been a headache for the last 4 years. It is hard to imagine a more hazardous virus for both individuals and companies. The algorithms utilized in Win32/KillFiles.NLC (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy currently exists, and possibly will exist. But that virus does not do all these horrible things immediately – it may require up to a few hours to cipher all of your documents. Therefore, seeing the Win32/KillFiles.NLC detection is a clear signal that you must begin the elimination process.

Where did I get the Win32/KillFiles.NLC?

Standard tactics of Win32/KillFiles.NLC distribution are standard for all other ransomware examples. Those are one-day landing sites where victims are offered to download and install the free software, so-called bait emails and hacktools. Bait e-mails are a quite new method in malware spreading – you receive the e-mail that mimics some regular notifications about deliveries or bank service conditions modifications. Inside of the email, there is a malicious MS Office file, or a link which leads to the exploit landing page.

Malicious email spam

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

Preventing it looks quite uncomplicated, but still needs tons of focus. Malware can hide in various spots, and it is much better to stop it even before it gets into your system than to depend on an anti-malware program. Common cybersecurity knowledge is just an essential item in the modern-day world, even if your relationship with a computer stays on YouTube videos. That may save you a lot of time and money which you would spend while seeking a fixing guide.

Win32/KillFiles.NLC malware technical details

File Info:

name: 20453248938D7AD9D2C9.mlw
path: /opt/CAPEv2/storage/binaries/6294d7a5d327530807ea8e1c4257972667e1b0dc0b4bab6b13240d7af8777f5a
crc32: 1654D857
md5: 20453248938d7ad9d2c91d9775d17fce
sha1: 760e11557817b4f64b2ef59d42bbdfdac4db2717
sha256: 6294d7a5d327530807ea8e1c4257972667e1b0dc0b4bab6b13240d7af8777f5a
sha512: c4e50ad3cdf31cefc09e75ecf41580d3c7da01eae9505e0d2e439000f967ea6c8901d9fc0454a92a894415ead011d0aa78f892e0805101c45b0dcf5c71125600
ssdeep: 12288:bnx9ih6L3SdWS5iiwuupvQoJ0vLnoQmAVD/8I27MuXxrhGz:bPy6L3SdW0vLnoQJB/vqlGz
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T1DE35800DAEB02015F9B735B985AE2069593D6EE3D724D0C711C47AECC6F1AEC6E30E16
sha3_384: 070c090833358639b47e9768960f6f4cfea1b7aa2949281bb54ce4c90149c85810bbb6e4df9c144776712ce009e96dbd
ep_bytes: e9df760000e98a5b0300e9d1270a00e9
timestamp: 2022-04-04 15:20:42

Version Info:

0: [No Data]

Win32/KillFiles.NLC also known as:

K7AntiVirusTrojan ( 0059406a1 )
K7GWTrojan ( 0059406a1 )
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/KillFiles.NLC
EmsisoftTrojan.GenericKD.50388331 (B)
MAXmalware (ai score=84)
CynetMalicious (score: 100)
RisingTrojan.Generic@AI.100 (RDML:cRmXkChuSky+yl9tXzSQpQ)
CrowdStrikewin/malicious_confidence_60% (W)

How to remove Win32/KillFiles.NLC?

Win32/KillFiles.NLC malware is very difficult to delete manually. It puts its documents in several locations throughout the disk, and can get back itself from one of the parts. Furthermore, a number of alterations in the registry, networking configurations and Group Policies are pretty hard to identify and revert to the initial. It is much better to use a special tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the best for malware elimination objectives.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated practically every hour. Furthermore, it does not have such bugs and weakness as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware suitable for taking out malware of any kind.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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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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