What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the BAT/KillBackup.C detection means that your system is in big danger. This computer virus can correctly be identified as ransomware – sort of malware which ciphers your files and asks you to pay for their decryption. Removing it requires some peculiar steps that must be done as soon as possible.
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BAT/KillBackup.C detection is a virus detection you can spectate in your system. It generally appears after the preliminary activities on your PC – opening the suspicious email, clicking the banner in the Web or mounting the program from suspicious resources. From the moment it appears, you have a short time to do something about it until it begins its harmful activity. And be sure – it is far better not to wait for these harmful things.

What is BAT/KillBackup.C virus?

BAT/KillBackup.C is ransomware-type malware. It looks for the files on your disk drives, encrypts it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files inaccessible, this malware also does a lot of harm to your system. It modifies the networking setups in order to stop you from checking out the elimination guidelines or downloading the anti-malware program. In some cases, BAT/KillBackup.C can additionally stop the setup of anti-malware programs.

BAT/KillBackup.C Summary

Summarizingly, BAT/KillBackup.C ransomware actions in the infected PC are next:

  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution;
  • CAPE extracted potentially suspicious content;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Uses Windows utilities to create a scheduled task;
  • Uses suspicious command line tools or Windows utilities;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Encrypting the documents located on the victim’s disk drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a headache for the last 4 years. It is challenging to imagine a more dangerous malware for both individual users and businesses. The algorithms utilized in BAT/KillBackup.C (generally, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have more time than our galaxy actually 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 files. Therefore, seeing the BAT/KillBackup.C detection is a clear signal that you need to begin the elimination process.

Where did I get the BAT/KillBackup.C?

Common ways of BAT/KillBackup.C spreading are basic for all other ransomware examples. Those are one-day landing sites where users are offered to download and install the free software, so-called bait emails and hacktools. Bait emails are a relatively modern method in malware distribution – you receive the email that mimics some regular notifications about deliveries or bank service conditions changes. Within the e-mail, there is a corrupted MS Office file, or a link which opens the exploit landing site.

Malicious email spam

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

Avoiding it looks quite uncomplicated, however, still requires a lot of focus. Malware can hide in different places, and it is better to stop it even before it invades your PC than to trust in an anti-malware program. Basic cybersecurity knowledge is just an important item in the modern world, even if your relationship with a PC stays on YouTube videos. That may keep you a great deal of money and time which you would spend while searching for a fixing guide.

BAT/KillBackup.C malware technical details

File Info:

name: 6BCB43A32C21FE5BFB51.mlw
path: /opt/CAPEv2/storage/binaries/79324f9573057cdb2a50ae32444be0b50935e07c2120a6a7082fc4349649d4ea
crc32: 6834725C
md5: 6bcb43a32c21fe5bfb510256dbeb3297
sha1: e82f2aa80a623f515672869d8240a28fdbd771ee
sha256: 79324f9573057cdb2a50ae32444be0b50935e07c2120a6a7082fc4349649d4ea
sha512: d736473fae382914795ede54a8d711c0b9331407cb018ed1a83984cdf42b42f3b772d954a651a0d394f96c64696f45a90b4432d5d826b518ef166f1c8ebecc01
ssdeep: 96:ZPuZLfxl7o0IhSP/YXHe9H7Yd1Ez+4+vOfW+KQGNaNRugNM:ZMfj/C+9bYjSpWOfWrpaNG
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1F8F1B766A7B88773EDBA0F355C6256411731E605CE23EA2F8882500B5D733108AB2FB5
sha3_384: 68686d20e8789f515c3b33471288d46ad7f771a61d78138699680ee8fffa0f706b0e5a24ed1066b188fd05709e68acaf
ep_bytes: ff250020400000000000000000000000
timestamp: 2018-07-03 14:48:14

Version Info:

Translation: 0x0000 0x04b0
FileDescription: Ghol3s
InternalName: Ghol3s.exe
LegalCopyright: Copyright © 2018
OriginalFilename: Ghol3s.exe
ProductName: Ghol3s
Assembly Version:

BAT/KillBackup.C also known as:

K7AntiVirusRiskware ( 0040eff71 )
K7GWRiskware ( 0040eff71 )
Elasticmalicious (high confidence)
EmsisoftTrojan.Ransom.Unlock92 (A)
MAXmalware (ai score=84)
RisingRansom.Agent!8.6B7 (CLOUD)
CrowdStrikewin/malicious_confidence_100% (W)

How to remove BAT/KillBackup.C?

BAT/KillBackup.C malware is incredibly hard to eliminate manually. It places its files in multiple places throughout the disk, and can restore itself from one of the elements. Furthermore, numerous changes in the windows registry, networking configurations and also Group Policies are really hard to locate and return to the original. It is much better to utilize a specific program – exactly, an anti-malware program. GridinSoft Anti-Malware will fit the best for virus elimination objectives.

Why GridinSoft Anti-Malware? It is very light-weight and has its detection databases updated just about every hour. In addition, it does not have such bugs and exploits as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware perfect for eliminating 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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