Win32/Injector.EFPY

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

What is Win32/Injector.EFPY infection?

In this article you will certainly discover regarding the definition of Win32/Injector.EFPY as well as its negative influence on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to demand paying the ransom by a target.

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In the majority of the instances, Win32/Injector.EFPY virus will certainly advise its sufferers to initiate funds transfer for the function of counteracting the modifications that the Trojan infection has introduced to the sufferer’s tool.

Win32/Injector.EFPY Summary

These adjustments can be as adheres to:

  • 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 (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Likely virus infection of existing system binary;
  • Creates a copy of itself;
  • Appends a known multi-family ransomware file extension to files that have been encrypted;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard disk — so the victim can no more utilize the information;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
Related domains
z.whorecord.xyzTrojan.Ransomware.GenericKDS.41386452
a.tomx.xyzTrojan.Ransomware.GenericKDS.41386452

Win32/Injector.EFPY

One of the most normal channels whereby Win32/Injector.EFPY Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user winding up on a source that organizes a malicious software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the target’s PC or avoid the tool from operating in a proper way – while additionally putting a ransom money note that points out the need for the sufferers to impact the settlement for the objective of decrypting the documents or recovering the data system back to the preliminary problem. In most circumstances, the ransom money note will certainly show up when the customer reboots the COMPUTER after the system has actually currently been damaged.

Win32/Injector.EFPY circulation networks.

In different corners of the globe, Win32/Injector.EFPY expands by leaps and also bounds. Nevertheless, the ransom notes and also methods of extorting the ransom quantity might vary depending upon certain local (regional) setups. The ransom notes and also techniques of extorting the ransom quantity might vary depending on specific local (local) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In certain areas, the Trojans typically wrongfully report having actually detected some unlicensed applications enabled on the victim’s device. The sharp then requires the individual to pay the ransom money.

    Faulty declarations regarding prohibited web content.

    In nations where software piracy is much less prominent, this approach is not as efficient for the cyber fraudulences. Conversely, the Win32/Injector.EFPY popup alert may falsely claim to be deriving from a police organization and also will certainly report having located kid porn or various other unlawful information on the tool.

    Win32/Injector.EFPY popup alert might falsely claim to be acquiring from a regulation enforcement institution and also will certainly report having located child pornography or various other unlawful data on the gadget. The alert will similarly include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 5FC3B8D2
md5: b121c0ef5bd8ed3df67667a94877f54a
name: B121C0EF5BD8ED3DF67667A94877F54A.mlw
sha1: 4e7d4764150f224d647f31161a7e7aae98f0f001
sha256: d3be13cee8d96a73bbae046326c35bec1e55f4e4c5830a89011d38e3e1ab1ca0
sha512: c0dac91a548245c357ee102346ddc46b182b28efd2bea2ddf3282874a5295f003f79db74f0a5a5b52d7a6f249460d18386bdadfdc5745f3c23d3d48cd79df4b0
ssdeep: 3072:ioCiCyEsfY39+c/65v+7Ce7JhFRjVQCYM:2HyNZeAeJ7JVVF/
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0
LegalCopyright: ne of the millions playing, creating and exploring the endless possibilities of Roblox
InternalName: LAJJXPV5W
FileVersion: 1.00
CompanyName: ne of the millions playing, creating and exploring the endless possibilities of Roblox
LegalTrademarks: ne of the millions playing, creating and exploring the endless possibilities of Roblox
ProductName: ne of the millions playing, creating and exploring the endless possibilities of Roblox
ProductVersion: 1.00
FileDescription: ne of the millions playing, creating and exploring the endless possibilities of Roblox
OriginalFilename: LAJJXPV5W.exe

Win32/Injector.EFPY also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransomware.GenericKDS.41386452
CylanceUnsafe
SangforTrojan.Win32.Save.a
BitDefenderTrojan.Ransomware.GenericKDS.41386452
Cybereasonmalicious.f5bd8e
ArcabitTrojan.Ransomware.GenericS.D27781D4
SymantecML.Attribute.HighConfidence
APEXMalicious
KasperskyTrojan-Ransom.Win32.Purgen.anq
Ad-AwareTrojan.Ransomware.GenericKDS.41386452
EmsisoftTrojan.Ransomware.GenericKDS.41386452 (B)
F-SecureHeuristic.HEUR/AGEN.1138438
McAfee-GW-EditionBehavesLike.Win32.Generic.ch
FireEyeGeneric.mg.b121c0ef5bd8ed3d
SophosML/PE-A
AviraHEUR/AGEN.1138438
MAXmalware (ai score=84)
MicrosoftTrojan:Win32/Wacatac.B!ml
ZoneAlarmTrojan-Ransom.Win32.Purgen.anq
GDataTrojan.Ransomware.GenericKDS.41386452
CynetMalicious (score: 100)
ALYacTrojan.Ransomware.GenericKDS.41386452
ESET-NOD32a variant of Win32/Injector.EFPY
SentinelOneStatic AI – Malicious PE
FortinetW32/Kryptik.GUIF!tr
BitDefenderThetaGen:NN.ZevbaF.34590.hm1@aWJ5!ZBi
Qihoo-360HEUR/QVM03.0.9BFE.Malware.Gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)

How to remove Win32/Injector.EFPY virus?

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

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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