What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/Injector.YPZ infection?

In this post you will locate concerning the meaning of Win32/Injector.YPZ and its unfavorable effect on your computer system. Such ransomware are a kind of malware that is clarified by online frauds to require paying the ransom by a victim.

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In the majority of the cases, Win32/Injector.YPZ ransomware will certainly instruct its victims to initiate funds move for the objective of neutralizing the amendments that the Trojan infection has introduced to the target’s gadget.

Win32/Injector.YPZ Summary

These modifications can be as follows:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Injection with CreateRemoteThread in a remote process;
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • A process attempted to delay the analysis task.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Performs some HTTP requests;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Code injection with CreateRemoteThread in a remote process;
  • Deletes its original binary from disk;
  • Enumerates services, possibly for anti-virtualization;
  • Crashed cuckoomon during analysis. Report this error to the Github repo.;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • A system process is generating network traffic likely as a result of process injection;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates known Ruskill mutexes;
  • Clears Windows events or logs;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s disk drive — so the target can no more utilize the information;
  • Preventing regular access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains Trojan.Ransomlock!g21 Trojan.Ransomlock!g21 Trojan.Ransomlock!g21 Trojan.Ransomlock!g21


One of the most regular networks whereby Win32/Injector.YPZ Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of user ending up on a source that holds a destructive software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s PC or stop the device from operating in a proper way – while additionally placing a ransom money note that points out the need for the victims to impact the repayment for the objective of decrypting the files or bring back the file system back to the preliminary condition. In most instances, the ransom note will certainly turn up when the client restarts the PC after the system has actually currently been damaged.

Win32/Injector.YPZ circulation networks.

In numerous edges of the globe, Win32/Injector.YPZ expands by leaps and bounds. Nevertheless, the ransom money notes and techniques of extorting the ransom amount might vary depending upon certain neighborhood (regional) settings. The ransom notes and also methods of extorting the ransom quantity might differ depending on specific neighborhood (local) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software application.

    In certain areas, the Trojans commonly wrongfully report having actually found some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that requires the customer to pay the ransom.

    Faulty declarations about illegal material.

    In nations where software application piracy is less prominent, this technique is not as effective for the cyber scams. Alternatively, the Win32/Injector.YPZ popup alert may incorrectly declare to be originating from a law enforcement organization and also will report having located child porn or other illegal data on the gadget.

    Win32/Injector.YPZ popup alert may incorrectly declare to be deriving from a law enforcement establishment and also will report having situated youngster porn or various other prohibited data on the tool. The alert will likewise contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 16AF2A1A
md5: ce4e8bedf23622e52c49af8f9994fbce
name: CE4E8BEDF23622E52C49AF8F9994FBCE.mlw
sha1: 53c022ced10d9cd67dcf394d8d211cc9e66da4e2
sha256: 0ffc6fb749060a55cb3a62e9786f9a8e7e3e43c4f2786b10a53bae664d6b7866
sha512: 68ee36754490af29b5dd3894f8044ebd13eb6f4ba3f2b731a6c93f6fb0f5de3e2a0bc2d43da8df2409e917014018277e32662ac9c4059eb3d80a891dbbcd74af
ssdeep: 3072:N8bEvnqYDf9m16TtuPHrpNpINE3CnA1I:KbEfqYZmMZONSgI
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

0: [No Data]

Win32/Injector.YPZ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
DrWeb BackDoor.IRC.NgrBot.42
Cynet Malicious (score: 99)
ALYac Gen:Heur.Zygug.6
Cylance Unsafe
Zillya Trojan.Bublik.Win32.3460
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (D)
K7GW Riskware ( 0040eff71 )
Cybereason malicious.df2362
Cyren W32/Hamweq.D.gen!Eldorado
Symantec Trojan.Ransomlock!g21
ESET-NOD32 a variant of Win32/Injector.YPZ
APEX Malicious
Avast Win32:Cryptor
ClamAV Win.Trojan.Ransomlock-36
Kaspersky Worm.Win32.Ngrbot.bmku
BitDefender Gen:Heur.Zygug.6
NANO-Antivirus Trojan.Win32.NgrBot.bdjorq
ViRobot Trojan.Win32.A.Bublik.161792.B
MicroWorld-eScan Gen:Heur.Zygug.6
Tencent Malware.Win32.Gencirc.116da431
Ad-Aware Gen:Heur.Zygug.6
Sophos Mal/Generic-R + Mal/EncPk-AHQ
Comodo TrojWare.Win32.PWS.ZBot.AAA@4sq88d
BitDefenderTheta Gen:NN.ZexaF.34692.jGW@aWy884ci
VIPRE Trojan.Win32.Encpk.ahq (v)
McAfee-GW-Edition PWS-Zbot.gen.apx
Emsisoft Gen:Heur.Zygug.6 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan/Bublik.bdp
Webroot W32.Malware.Gen
Avira TR/Dropper.Gen7
Antiy-AVL Trojan/Generic.ASMalwS.172071
Microsoft Trojan:Win32/DorkBot.DU
GData Gen:Heur.Zygug.6
AhnLab-V3 Trojan/Win32.Ransomlock.R43769
McAfee PWS-Zbot.gen.apx
MAX malware (ai score=83)
VBA32 Worm.Dorkbot.1312
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_RANSOM.SMWX
Rising Dropper.Generic!8.35E (CLOUD)
Yandex Trojan.GenAsa!yn7g2RinBX4
Ikarus Trojan.Win32.Buzus
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Ransom.AAX!tr
AVG Win32:Cryptor

How to remove Win32/Injector.YPZ ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Injector.YPZ files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Injector.YPZ you can always ask me in the comments for getting help.

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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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