What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the MSIL/TrojanDownloader.Agent.KFR detection name means that your PC is in big danger. This malware can correctly be identified as ransomware – sort of malware which encrypts your files and asks you to pay for their decryption. Deleteing it requires some peculiar steps that must be done as soon as possible.
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MSIL/TrojanDownloader.Agent.KFR detection is a malware detection you can spectate in your computer. It usually appears after the provoking procedures on your computer – opening the dubious email, clicking the banner in the Internet or installing the program from unreliable resources. From the instance it shows up, you have a short time to take action before it begins its harmful activity. And be sure – it is better not to wait for these malicious things.

What is MSIL/TrojanDownloader.Agent.KFR virus?

MSIL/TrojanDownloader.Agent.KFR is ransomware-type malware. It looks for the files on your computer, ciphers it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents inaccessible, this virus also does a lot of damage to your system. It modifies the networking setups in order to prevent you from reading the removal guidelines or downloading the anti-malware program. Sometimes, MSIL/TrojanDownloader.Agent.KFR can also stop the launching of anti-malware programs.

MSIL/TrojanDownloader.Agent.KFR Summary

In summary, MSIL/TrojanDownloader.Agent.KFR virus actions in the infected computer are next:

  • Dynamic (imported) function loading detected;
  • CAPE extracted potentially suspicious content;
  • Authenticode signature is invalid;
  • Ciphering the documents located on the victim’s drive — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a major problem for the last 4 years. It is hard to imagine a more dangerous virus for both individual users and organizations. The algorithms utilized in MSIL/TrojanDownloader.Agent.KFR (generally, 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 already exists, and possibly will exist. But that virus does not do all these terrible things immediately – it may take up to several hours to cipher all of your documents. Hence, seeing the MSIL/TrojanDownloader.Agent.KFR detection is a clear signal that you need to start the elimination process.

Where did I get the MSIL/TrojanDownloader.Agent.KFR?

Typical tactics of MSIL/TrojanDownloader.Agent.KFR distribution are basic for all other ransomware variants. Those are one-day landing web pages where victims are offered to download and install the free program, so-called bait e-mails and hacktools. Bait emails are a relatively new tactic in malware distribution – you receive the email that imitates some standard notifications about shippings or bank service conditions changes. Inside of the email, there is a malicious 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 quite uncomplicated, but still requires a lot of recognition. Malware can hide in various spots, and it is far better to stop it even before it invades your computer than to rely upon an anti-malware program. Basic cybersecurity knowledge is just an important thing in the modern-day world, even if your interaction with a PC stays on YouTube videos. That may keep you a lot of money and time which you would spend while trying to find a solution.

MSIL/TrojanDownloader.Agent.KFR malware technical details

File Info:

name: 6A3E0B978754C844B1D3.mlw
path: /opt/CAPEv2/storage/binaries/0f1660ca73964f67c094e33bc752c10215646d884d75ceefc87a47a2ec27a1c9
crc32: F55FAD98
md5: 6a3e0b978754c844b1d324f5f20c7782
sha1: 51d312d341cb8c9b382c4acb82c04e2e396fcece
sha256: 0f1660ca73964f67c094e33bc752c10215646d884d75ceefc87a47a2ec27a1c9
sha512: 7a06d15f7d47e69261a42f0fb4c5688108d87b6b10236fa52bc68c630de281938ca0be70591944eb019b3608d4ea6ce49fc07fd320138b97bb7d3c8fa37afdc5
ssdeep: 768:bCT+3NB0Cf81vrcT/esv1VRpicklI9YQ+Q+JoKnqiUtP+cuIHJ:bCW0A8Rk/nvdYlIiQ+Qw/n14m8p
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T19283CEF88FF47CA4E52821337450A13C77EA4D0EDC535636E64BF12934679C6A0E6A8B
sha3_384: 22ac6d95e1d41adc12fe8570f512311b089e4f91e798958ffa703e157afb082499a8edc55d9df9a3c80f230d14ecb26c
ep_bytes: ff250020400000000000000000000000
timestamp: 2022-01-29 07:58:22

Version Info:

Translation: 0x0000 0x04b0
Comments: Windows Winhlp32 Stub
CompanyName: Microsoft Corporation
FileDescription: Windows Winhlp32 Stub
FileVersion: 10.0.19041.1
InternalName: Mdiceho.exe
LegalCopyright: © Microsoft Corporation. All rights reserved.
OriginalFilename: Mdiceho.exe
ProductName: Microsoft® Windows® Operating System
ProductVersion: 10.0.19041.1
Assembly Version: 10.0.19041.1

MSIL/TrojanDownloader.Agent.KFR also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan-Downloader ( 0058dabb1 )
K7GWTrojan-Downloader ( 0058dabb1 )
ESET-NOD32a variant of MSIL/TrojanDownloader.Agent.KFR
EmsisoftGen:Variant.Ransom.Henry.1 (B)
SentinelOneStatic AI – Malicious PE
MAXmalware (ai score=80)
CynetMalicious (score: 100)
McAfeeRDN/Generic Downloader.x
CrowdStrikewin/malicious_confidence_90% (W)

How to remove MSIL/TrojanDownloader.Agent.KFR?

MSIL/TrojanDownloader.Agent.KFR malware is extremely difficult to remove by hand. It puts its data in numerous places throughout the disk, and can restore itself from one of the parts. Moreover, a range of changes in the registry, networking setups and Group Policies are fairly hard to find and revert to the initial. It is better to make use of a special app – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for malware removal purposes.

Why GridinSoft Anti-Malware? It is really light-weight and has its databases updated just about every hour. In addition, it does not have such bugs and exposures as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for eliminating malware of any form.

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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