What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Troj/Blind-A malware detection usually means that your PC is in big danger. This malware can correctly be identified as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Stopping it requires some specific steps that must be done as soon as possible.
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Troj/Blind-A detection is a malware detection you can spectate in your computer. It often shows up after the preliminary actions on your PC – opening the suspicious email, clicking the advertisement in the Web or setting up the program from unreliable sources. From the instance it appears, you have a short time to act until it begins its harmful activity. And be sure – it is much better not to await these destructive effects.

What is Troj/Blind-A virus?

Troj/Blind-A is ransomware-type malware. It looks for the documents on your disk drives, encrypts 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 harm to your system. It changes the networking setups in order to avoid you from looking for the elimination manuals or downloading the antivirus. In some cases, Troj/Blind-A can also stop the launching of anti-malware programs.

Troj/Blind-A Summary

In total, Troj/Blind-A malware actions in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Dynamic (imported) function loading detected;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Enumerates running processes;
  • Manipulates data from or to the Recycle Bin;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete or modify volume shadow copies;
  • Writes a potential ransom message to disk;
  • Modifies boot configuration settings;
  • Exhibits possible ransomware file modification behavior;
  • Likely virus infection of existing system binary;
  • Creates a known Estemani ransomware decryption instruction / key file.;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the documents kept on the victim’s disks — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a headache for the last 4 years. It is hard to picture a more harmful malware for both individuals and organizations. The algorithms used in Troj/Blind-A (usually, 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 malware does not do all these bad things instantly – it may require up to several hours to cipher all of your files. Therefore, seeing the Troj/Blind-A detection is a clear signal that you should begin the elimination process.

Where did I get the Troj/Blind-A?

Common ways of Troj/Blind-A distribution are usual for all other ransomware examples. Those are one-day landing web pages where users are offered to download and install the free program, so-called bait e-mails and hacktools. Bait e-mails are a pretty new strategy in malware spreading – you receive the email that imitates some regular notifications about shippings or bank service conditions updates. Inside of the email, there is a malicious 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 pretty simple, however, still needs a lot of recognition. Malware can hide in different places, and it is far better to stop it even before it gets into your system than to depend on an anti-malware program. Basic cybersecurity knowledge is just an essential item in the modern world, even if your relationship with a computer remains on YouTube videos. That can save you a great deal of money and time which you would certainly spend while looking for a solution.

Troj/Blind-A malware technical details

File Info:

name: CF210898BDFD3CC88171.mlw
path: /opt/CAPEv2/storage/binaries/4ef1d3ae0c97521e4249fcd7950c10c2e0cd22b031edf567e91476343f67ff54
crc32: AFD0CD42
md5: cf210898bdfd3cc88171a4650c753725
sha1: 8442cf03bc61b4489519dc67aa3ff1bcc5d7e7bf
sha256: 4ef1d3ae0c97521e4249fcd7950c10c2e0cd22b031edf567e91476343f67ff54
sha512: 6d9b9d5c83b77471deeab5242fd143cf005f64f75b2aa7feed61d1b22d70d85ce18931deb15db7bdf3458c45baed7dd7f96a163b45004bf831759bd2b155971b
ssdeep: 12288:eP5k4IOwA7+OeO+OeNhBBhhBBcvRe3525djsUTpStRuiJMWte5uAnIsyRdstwVAw:0k4IOwAvReM55sdxzteBRgFAQhIrGdN/
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12FE48E22BA93E0B2C5BA11B10D2CF70D63BFB85549759B7F77E80B1D1FB01809A196D2
sha3_384: b3bbe884678d3588bf639f186c826ba34f947cb3574f684496bf6a7647818c31ce98358e7a66c5e3799a4e4967d66765
ep_bytes: e890e50000e97ffeffff558bec83ec20
timestamp: 2017-11-26 22:29:54

Version Info:

0: [No Data]

Troj/Blind-A also known as:

Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Filecoder.NNZ
SentinelOneStatic AI – Suspicious PE
EmsisoftGen:Heur.Ransom.REntS.Gen.1 (B)
CynetMalicious (score: 100)
RisingMalware.Heuristic!ET#90% (RDMK:cmRtazrAa6T8XGQCoueWZhOEYgxO)
MAXmalware (ai score=80)

How to remove Troj/Blind-A?

Troj/Blind-A malware is very hard to remove manually. It puts its data in a variety of places throughout the disk, and can restore itself from one of the parts. Additionally, numerous modifications in the registry, networking settings and also Group Policies are fairly hard to identify and revert to the original. It is better to utilize a specific program – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for virus removal objectives.

Why GridinSoft Anti-Malware? It is very light-weight and has its databases updated nearly every hour. In addition, it does not have such bugs and vulnerabilities as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware suitable for taking out 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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