What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the PWS:Win32/Sifre.A detection usually means that your system is in big danger. This computer virus can correctly be identified as ransomware – type of malware which encrypts your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be done as soon as possible.
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PWS:Win32/Sifre.A detection is a virus detection you can spectate in your system. It frequently shows up after the preliminary procedures on your PC – opening the untrustworthy email messages, clicking the advertisement in the Internet or setting up the program from untrustworthy resources. From the moment it appears, 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 actions.

What is PWS:Win32/Sifre.A virus?

PWS:Win32/Sifre.A is ransomware-type malware. It searches for the documents on your disk drive, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this malware additionally does a ton of damage to your system. It alters the networking settings in order to stop you from checking out the elimination tutorials or downloading the antivirus. Sometimes, PWS:Win32/Sifre.A can also stop the launching of anti-malware programs.

PWS:Win32/Sifre.A Summary

Summarizingly, PWS:Win32/Sifre.A malware actions in the infected PC are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Unconventionial language used in binary resources: Turkish;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Attempts to disable UAC;
  • Disables Windows firewall;
  • Attempts to modify or disable Security Center warnings;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the target’s disk drive — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has been a nightmare for the last 4 years. It is hard to realize a more dangerous virus for both individual users and businesses. The algorithms used in PWS:Win32/Sifre.A (usually, 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 terrible things instantly – it can take up to several hours to cipher all of your documents. Hence, seeing the PWS:Win32/Sifre.A detection is a clear signal that you have to start the clearing procedure.

Where did I get the PWS:Win32/Sifre.A?

Standard ways of PWS:Win32/Sifre.A injection are typical for all other ransomware examples. Those are one-day landing sites where users are offered to download the free program, so-called bait emails and hacktools. Bait e-mails are a quite modern method in malware distribution – you receive the email that mimics some standard notifications about shippings or bank service conditions modifications. Inside of the email, 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.

Preventing it looks quite simple, however, still needs tons of awareness. Malware can hide in different places, and it is better to prevent it even before it goes into your computer than to depend on an anti-malware program. Essential cybersecurity awareness is just an essential item in the modern world, even if your interaction with a PC remains on YouTube videos. That can keep you a great deal of time and money which you would certainly spend while seeking a fixing guide.

PWS:Win32/Sifre.A malware technical details

File Info:

name: EFFC69D678B49244DC13.mlw
path: /opt/CAPEv2/storage/binaries/00f6fee4c4b191b708ed11081a9eb105addbd89a716cae6342ef47c86add8096
crc32: DD178D63
md5: effc69d678b49244dc13406fe42a9f5b
sha1: 8b34f09dd17b10aefed06118a6adb044f878f5d7
sha256: 00f6fee4c4b191b708ed11081a9eb105addbd89a716cae6342ef47c86add8096
sha512: 87eec2cac416db130b0dad84335594d75d806e4ff211bd53b8f09799e575d67aa7658c6a3c99de584ed2163d4de7a4363d62fa199bbde11856ad5f8ca6d4cbf5
ssdeep: 49152:6+zqxC6oWbci0QOk/cvgzgQFskaZ7y7NqYzcf/1gDCtk0JOPFz8STcG/gAd7KDxK:/zCjkK4i8mkpRiIel+sevcEgISxJSHaR
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T192D5ADF1A9C6E897EBEDA4B2E720C4F181B56D59C2D641EB328DBD5D70EF2108719B00
sha3_384: d5d13fdff3895fa58bf15d922bcde3164887fddd3ff33557cdb0270bc02d981f1951942b9c9a1e88f92b47a0e3479698
ep_bytes: fc5550e8000000005d50e80300000083
timestamp: 2014-03-19 19:52:53

Version Info:

ProductName: svchosts
FileVersion: 12.00
ProductVersion: 12.00
InternalName: svchosts
OriginalFilename: svchosts.exe
Translation: 0x0409 0x04b0

PWS:Win32/Sifre.A also known as:

K7AntiVirusSpyware ( 0055e3db1 )
K7GWSpyware ( 0055e3db1 )
Elasticmalicious (high confidence)
ESET-NOD32a variant of Generik.KWGWWZV
CynetMalicious (score: 99)
AvastSf:Zbot-JN [PUP]
SentinelOneStatic AI – Malicious PE
ZonerProbably Heur.ExeHeaderL
RisingBackdoor.Hakops!8.1097C (CLOUD)

How to remove PWS:Win32/Sifre.A?

PWS:Win32/Sifre.A malware is incredibly hard to delete by hand. It stores its documents in numerous places throughout the disk, and can get back itself from one of the parts. In addition, a number of modifications in the windows registry, networking setups and also Group Policies are really hard to identify and return to the initial. It is better to use a specific app – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the best for malware elimination objectives.

Why GridinSoft Anti-Malware? It is very lightweight and has its detection databases updated nearly every hour. Moreover, it does not have such bugs and weakness as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware suitable for clearing away 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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