DiskCryptor (PUA)

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the DiskCryptor (PUA) detection name usually means that your PC is in big danger. This virus can correctly be named as ransomware – type of malware which encrypts your files and forces you to pay for their decryption. Stopping it requires some specific steps that must be taken as soon as possible.
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DiskCryptor (PUA) detection is a virus detection you can spectate in your computer. It usually shows up after the provoking activities on your PC – opening the suspicious email, clicking the advertisement in the Internet or installing the program from unreliable resources. From the instance it appears, you have a short time to take action until it starts its destructive activity. And be sure – it is better not to wait for these malicious actions.

What is DiskCryptor (PUA) virus?

DiskCryptor (PUA) is ransomware-type malware. It looks for the documents on your disk drives, ciphers it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this malware also does a lot of damage to your system. It alters the networking settings in order to stop you from looking for the removal guidelines or downloading the antivirus. In some cases, DiskCryptor (PUA) can even stop the launching of anti-malware programs.

DiskCryptor (PUA) Summary

In total, DiskCryptor (PUA) ransomware actions in the infected system are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Presents an Authenticode digital signature;
  • Creates RWX memory;
  • Anomalous file deletion behavior detected (10+);
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • Drops a binary and executes it;
  • The binary contains an unknown PE section name indicative of packing;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Installs itself for autorun at Windows startup;
  • Installs itself for autorun at Windows startup;
  • Created a service that was not started;
  • Encrypting the documents kept on the victim’s disk drives — so the victim cannot use these documents;
  • 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 difficult to realize a more hazardous malware for both individual users and businesses. The algorithms utilized in DiskCryptor (PUA) (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 already exists, and possibly will exist. But that virus does not do all these bad things without delay – it may take up to several hours to cipher all of your documents. Hence, seeing the DiskCryptor (PUA) detection is a clear signal that you must start the removal procedure.

Where did I get the DiskCryptor (PUA)?

General tactics of DiskCryptor (PUA) distribution are typical for all other ransomware examples. Those are one-day landing websites where users are offered to download and install the free program, so-called bait emails and hacktools. Bait emails are a pretty modern strategy in malware spreading – you get the email that mimics some normal notifications about deliveries or bank service conditions shifts. Within the e-mail, there is an infected 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.

Avoiding it looks fairly uncomplicated, but still demands a lot of attention. Malware can hide in various places, and it is far better to stop it even before it invades your system than to trust in an anti-malware program. Standard cybersecurity knowledge is just an important item in the modern world, even if your relationship with a computer stays on YouTube videos. That may save you a great deal of money and time which you would spend while looking for a solution.

DiskCryptor (PUA) malware technical details

File Info:

name: 3375FE67827671E121D0.mlw
path: /opt/CAPEv2/storage/binaries/02ac3a4f1cfb2723c20f3c7678b62c340c7974b95f8d9320941641d5c6fd2fee
crc32: CA354731
md5: 3375fe67827671e121d049f9aabefc3e
sha1: e5286dbd0a54a110b39eb1e3e7015d82f316132e
sha256: 02ac3a4f1cfb2723c20f3c7678b62c340c7974b95f8d9320941641d5c6fd2fee
sha512: 02f47087f83cc3c9e1bcf648c7e66a4e5661fc85d87899f777ea1d36fcd2450f8f7e532706ba307b37f1ee142062dd774b471cc02d44bdf47861714aec84561a
ssdeep: 49152:omOG+vku8E5Yk1qCF8xO7EoSrTSw093r9GGQ/DsWR4Tn/fmDJ:8bvPr1TF8tSjaJ/DsWRWf0J
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1D3752303B3D76431F5616E36D5BA80087D237ABA25E494193EF8CB0E0E75AC64C767B2
sha3_384: c2c402dcafc140cc6b198846b959a4bc86815ae92b153022b809e6aeaab438e0bda7488c001fd54f0a7c6d416a85884e
ep_bytes: 558bec83c4a453565733c08945c48945
timestamp: 2016-01-15 08:22:50

Version Info:

Comments: This installation was built with Inno Setup.
CompanyName: http://diskcryptor.org/
FileDescription: DiskCryptor Setup
ProductName: DiskCryptor
ProductVersion: 1.2.1
Translation: 0x0000 0x04b0

DiskCryptor (PUA) also known as:

AvastWin32:PUP-gen [PUP]
RisingRansom.Dcryptor!1.C14C (CLOUD)
McAfee-GW-EditionGeneric trojan.op
SophosDiskCryptor (PUA)
AVGWin32:PUP-gen [PUP]

How to remove DiskCryptor (PUA)?

DiskCryptor (PUA) malware is incredibly hard to erase manually. It stores its documents in numerous places throughout the disk, and can restore itself from one of the parts. In addition, numerous modifications in the windows registry, networking configurations and Group Policies are pretty hard to find and change to the original. It is much better to use a special tool – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the most ideal for malware elimination purposes.

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

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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