What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the PWS:Win32/Zbot.Y detection usually means that your computer is in big danger. This malware can correctly be named 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 taken as soon as possible.
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PWS:Win32/Zbot.Y detection is a virus detection you can spectate in your system. It generally shows up after the preliminary actions on your PC – opening the suspicious e-mail, clicking the banner in the Web or installing the program from suspicious resources. From the moment it appears, you have a short time to do something about it until it begins its malicious activity. And be sure – it is much better not to await these destructive effects.

What is PWS:Win32/Zbot.Y virus?

PWS:Win32/Zbot.Y is ransomware-type malware. It searches for the files on your disk drives, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this virus also does a lot of damage to your system. It modifies the networking settings in order to avoid you from reading the elimination tutorials or downloading the anti-malware program. Sometimes, PWS:Win32/Zbot.Y can additionally stop the launching of anti-malware programs.

PWS:Win32/Zbot.Y Summary

Summarizingly, PWS:Win32/Zbot.Y virus actions in the infected PC are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Possible date expiration check, exits too soon after checking local time;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Russian;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • The executable is compressed using UPX;
  • Authenticode signature is invalid;
  • Ciphering the documents kept on the target’s disk drives — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of security tools

Ransomware has actually been a headache for the last 4 years. It is difficult to imagine a more dangerous virus for both individuals and businesses. The algorithms used in PWS:Win32/Zbot.Y (typically, 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 can take up to a few hours to cipher all of your documents. Therefore, seeing the PWS:Win32/Zbot.Y detection is a clear signal that you have to begin the removal process.

Where did I get the PWS:Win32/Zbot.Y?

Ordinary ways of PWS:Win32/Zbot.Y distribution are typical for all other ransomware examples. Those are one-day landing websites where victims are offered to download the free software, so-called bait e-mails and hacktools. Bait e-mails are a quite modern tactic in malware distribution – you get the email that imitates some regular notifications about shippings or bank service conditions updates. Inside of the e-mail, there is an infected MS Office file, or a link which opens the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks quite simple, but still requires a lot of recognition. Malware can hide in different places, and it is much better to prevent it even before it goes into your system than to rely on an anti-malware program. Common cybersecurity knowledge is just an important item in the modern-day 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 seeking a solution.

PWS:Win32/Zbot.Y malware technical details

File Info:

name: 1A81407B77C5753AE7FC.mlw
path: /opt/CAPEv2/storage/binaries/f0d9ce7be6598e6746f05791a669ca6cfd14d8c9a79f8149a3fa8c8a0a09e835
crc32: FE07CACF
md5: 1a81407b77c5753ae7fc6d4c1057e68e
sha1: 88c5506ce180bb29d24a6ba375f757e8fc17687e
sha256: f0d9ce7be6598e6746f05791a669ca6cfd14d8c9a79f8149a3fa8c8a0a09e835
sha512: 6e9c081ce8b8dbdd6bc793f167d838931ae5e22cf155c40359d4acac8a23ae1c638276bba21462560114d7d2c7b549a9910c5abefbca85a8e1058aab7081b0b3
ssdeep: 3072:vQeKo556VALkeqJbPSUNYpbtDDYgRH89Gr5QgRNRm56B5RLn63DwkxgktQpk:vQe955wfToUNYp5DDYgRH84118oD88HN
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1FDF3129BC55587ABFFC8183E4E4DA8344207AA31C9E9720CF561C5CF74B5EA5DA2033A
sha3_384: b9e420320144a4657eb8a4696f5908e43a4135740eb2389ba90b8cf24cbf215e86100cd33715891a6045ba53bc7f2877
ep_bytes: 60be00a041008dbe0070feff57eb0b90
timestamp: 2011-11-29 22:21:08

Version Info:

CompanyName: This is Free Software under the terms of the GNU GPL v2
FileDescription: Windows CryptContext Generator (WinCG)
InternalName: WinPT
LegalCopyright: Copyright (C) 2010 Andre Schulz
OriginalFilename: WinCG
ProductName: CryptContext Generator
Translation: 0x0409 0x04b0

PWS:Win32/Zbot.Y also known as:

Elasticmalicious (high confidence)
CrowdStrikewin/malicious_confidence_100% (W)
K7GWTrojan ( 003c36381 )
K7AntiVirusTrojan ( 003c36381 )
ESET-NOD32a variant of Win32/Kryptik.WMS
EmsisoftGen:Variant.Symmi.19378 (B)
SophosMal/Generic-R + Mal/Ransom-AL
MAXmalware (ai score=100)
CynetMalicious (score: 100)
RisingSpyware.Zbot!8.16B (CLOUD)
SentinelOneStatic AI – Malicious PE

How to remove PWS:Win32/Zbot.Y?

PWS:Win32/Zbot.Y malware is incredibly hard to delete manually. It puts its files in several locations throughout the disk, and can restore itself from one of the elements. Additionally, a range of modifications in the windows registry, networking settings and also Group Policies are fairly hard to locate and return to the original. It is much better to make use of a specific program – exactly, an anti-malware program. GridinSoft Anti-Malware will fit the best for virus removal purposes.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its detection databases updated almost every hour. Additionally, it does not have such problems and weakness as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware perfect for clearing away 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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