What is Trojan:Win32/Neop infection?

In this article you will discover regarding the interpretation of Trojan:Win32/Neop as well as its negative effect on your computer system. Such ransomware are a form of malware that is clarified by on the internet frauds to require paying the ransom by a target.

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In the majority of the instances, Trojan:Win32/Neop infection will instruct its victims to launch funds move for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the victim’s tool.

Trojan:Win32/Neop Summary

These modifications can be as adheres to:

  • 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.;
  • Unconventionial language used in binary resources: Spanish (Colombia);
  • Uses Windows utilities for basic functionality;
  • 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
  • Operates on local firewall’s policies and settings;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents situated on the victim’s hard drive — so the sufferer can no more utilize the information;
  • Preventing regular access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most normal networks where Trojan:Win32/Neop Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a resource that hosts a destructive software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the victim’s PC or prevent the gadget from operating in a correct fashion – while also putting a ransom note that discusses the requirement for the victims to effect the settlement for the objective of decrypting the documents or recovering the documents system back to the initial problem. In most circumstances, the ransom note will certainly show up when the client reboots the PC after the system has already been harmed.

Trojan:Win32/Neop circulation networks.

In numerous corners of the globe, Trojan:Win32/Neop grows by jumps and also bounds. Nevertheless, the ransom notes as well as methods of extorting the ransom money quantity may vary depending on specific local (regional) settings. The ransom notes and also tricks of obtaining the ransom money quantity might differ depending on particular local (local) settings.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software.

    In certain locations, the Trojans usually wrongfully report having detected some unlicensed applications enabled on the target’s device. The alert then requires the customer to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software program piracy is less prominent, this approach is not as reliable for the cyber frauds. Conversely, the Trojan:Win32/Neop popup alert might falsely claim to be stemming from a police establishment and also will report having situated kid pornography or other prohibited data on the gadget.

    Trojan:Win32/Neop popup alert may falsely declare to be deriving from a legislation enforcement organization and will certainly report having located kid porn or various other unlawful information on the device. The alert will in a similar way include a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 37C8E291
md5: 4a790a7ff5cccb10f417cea845e3abb3
name: 4A790A7FF5CCCB10F417CEA845E3ABB3.mlw
sha1: 664025f853fff1e51a511eed2bb98dd86d0730ad
sha256: 80e859897c4737084267ae61973a0224b12f1112f70f5899bd9ceefa3a142631
sha512: 25c36450e312a7bcb574e6bc3a791fe420f6aefadd5178abf319edaaa4f4143b6f2d90433d9c7763390d1008bf0d7e9f37e1cdbde679be840e08636d566f7746
ssdeep: 12288:+KkyslAlrZlCqEq0KwiSPB2zl93TC5Ox2kcC8tVmkTbj8fGq:k6kqF05iO2PXcFtdTbj8eq
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Neop also known as:

GridinSoft Trojan.Ransom.Gen
DrWeb Trojan.Siggen7.35893
Cynet Malicious (score: 100)
ALYac Gen:Variant.Strictor.38589
Cylance Unsafe
Zillya Trojan.Blocker.Win32.24698
Sangfor Trojan.Win32.AGEN.1018377
Cybereason malicious.ff5ccc
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Blocker.bogx
BitDefender Gen:Variant.Strictor.38589
NANO-Antivirus Trojan.Win32.Blocker.cyhqid
MicroWorld-eScan Gen:Variant.Strictor.38589
Tencent Win32.Trojan.Blocker.Pegf
Ad-Aware Gen:Variant.Strictor.38589
Sophos Mal/Generic-S
Comodo Malware@#3sxhdiguzlz4h
BitDefenderTheta Gen:NN.ZelphiF.34628.QGW@aK4BuxL
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.jh
FireEye Gen:Variant.Strictor.38589
Emsisoft Gen:Variant.Strictor.38589 (B)
Avira TR/Spy.690688.38
eGambit Unsafe.AI_Score_99%
Microsoft Trojan:Win32/Neop
GData Gen:Variant.Strictor.38589
TACHYON Trojan/W32.DP-Blocker.690688
McAfee Artemis!4A790A7FF5CC
MAX malware (ai score=80)
VBA32 Hoax.Blocker
Panda Trj/CI.A
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.GenAsa!FKuMcb2CoVE
Fortinet W32/Blocker.BOGX!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/Trojan.d86

How to remove Trojan:Win32/Neop 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 GridinSoft3.

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 Trojan:Win32/Neop 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 Trojan:Win32/Neop you can always ask me in the comments for getting help.

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  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site:
  3. More information about GridinSoft products:

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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