What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Trojan.Crypt.SFX malware detection means that your system is in big danger. This malware can correctly be identified as ransomware – virus which encrypts your files and forces you to pay for their decryption. Stopping it requires some peculiar steps that must be taken as soon as possible.
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Trojan.Crypt.SFX detection is a malware detection you can spectate in your computer. It generally appears after the provoking procedures on your PC – opening the untrustworthy e-mail messages, clicking the advertisement in the Internet or installing the program from unreliable resources. From the instance it shows up, you have a short time to take action until it starts its malicious action. And be sure – it is far better not to await these malicious effects.

What is Trojan.Crypt.SFX virus?

Trojan.Crypt.SFX is ransomware-type malware. It searches 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 inaccessible, this malware additionally does a ton of damage to your system. It changes the networking setups in order to avoid you from reading the removal tutorials or downloading the antivirus. Sometimes, Trojan.Crypt.SFX can even stop the launching of anti-malware programs.

Trojan.Crypt.SFX Summary

Summarizingly, Trojan.Crypt.SFX ransomware activities in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • Creates RWX memory;
  • Guard pages use detected – possible anti-debugging.;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • Encrypting the documents located on the victim’s disk — so the victim cannot open these files;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-virus apps

Ransomware has been a nightmare for the last 4 years. It is challenging to realize a more hazardous malware for both individual users and companies. The algorithms used in Trojan.Crypt.SFX (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 actually exists, and possibly will exist. But that malware does not do all these unpleasant things instantly – it can take up to a few hours to cipher all of your documents. Thus, seeing the Trojan.Crypt.SFX detection is a clear signal that you should begin the removal procedure.

Where did I get the Trojan.Crypt.SFX?

Typical ways of Trojan.Crypt.SFX spreading are typical for all other ransomware variants. Those are one-day landing sites where victims are offered to download and install the free app, so-called bait emails and hacktools. Bait emails are a pretty new strategy in malware spreading – you receive the email that imitates some regular notifications about shippings or bank service conditions shifts. Within the e-mail, there is a malicious MS Office file, or a web 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 easy, but still requires tons of awareness. Malware can hide in various places, and it is much better to stop it even before it gets into your computer than to rely on an anti-malware program. Essential cybersecurity knowledge is just an essential item in the modern-day world, even if your relationship with a PC stays on YouTube videos. That can save you a great deal of time and money which you would spend while looking for a fix guide.

Trojan.Crypt.SFX malware technical details

File Info:

name: 51F7C75DE7D022DCD786.mlw
path: /opt/CAPEv2/storage/binaries/97240f5aacd1dd3cec3a9f61bff360702f961e24ca6270d3b1d4c04b79138ea3
crc32: 516489E6
md5: 51f7c75de7d022dcd7862f7ffb1e2a2b
sha1: daba54d3b44fed13087e933853725e654bbc91c0
sha256: 97240f5aacd1dd3cec3a9f61bff360702f961e24ca6270d3b1d4c04b79138ea3
sha512: d88c7dcdaf3458d1be2042bb840f546845f0ca2d01e27366bf7ee2cf75125455d1e9f29c7fb081e4ba9ac015ed8a933c4542ea8ee4f648fd29ae173a5aac6f11
ssdeep: 49152:Ky4iqMlEqJUBcsUKbwpqOpMh3xmV9AmDx:KyVqMlEqqBWKOpUqP9
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T16DA53509D187E27BFCED08A3445091D0C29C7FAA7B1289CDE97AD58A111F482F7B6D87
sha3_384: 951879b8e7f65497868d58ab1b37c95e0e59080d48e13a92428bd1685db0a58a977f2df09594af8f53676cfc0739638a
ep_bytes: e848050000e988feffff3b0d58154300
timestamp: 2020-06-25 10:38:29

Version Info:

0: [No Data]

Trojan.Crypt.SFX also known as:

K7AntiVirusTrojan ( 0058dedf1 )
K7GWTrojan ( 0058dedf1 )
CrowdStrikewin/malicious_confidence_60% (W)
ESET-NOD32a variant of Win32/Injector.ERBB
EmsisoftTrojan.GenericKD.48259130 (B)
SentinelOneStatic AI – Suspicious PE
CynetMalicious (score: 100)
MAXmalware (ai score=86)
ZonerProbably Heur.RARAutorun
RisingMalware.Heuristic!ET#81% (RDMK:cmRtazq/Jwyk6LXrSvocQicegqLi)

How to remove Trojan.Crypt.SFX?

Trojan.Crypt.SFX malware is incredibly difficult to erase manually. It places its data in a variety of places throughout the disk, and can get back itself from one of the elements. Additionally, a lot of changes in the windows registry, networking settings and Group Policies are quite hard to discover and change to the initial. It is better to utilize a special program – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for virus elimination purposes.

Why GridinSoft Anti-Malware? It is very light-weight and has its databases updated nearly every hour. Moreover, it does not have such bugs and weakness as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware ideal for removing 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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