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

What is Ursu.887634 infection?

In this short article you will certainly locate regarding the interpretation of Ursu.887634 and its adverse influence on your computer system. Such ransomware are a type of malware that is elaborated by on the internet frauds to demand paying the ransom money by a victim.

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Most of the cases, Ursu.887634 ransomware will certainly instruct its targets to initiate funds transfer for the function of neutralizing the modifications that the Trojan infection has actually introduced to the sufferer’s tool.

Ursu.887634 Summary

These alterations can be as complies with:

  • Performs some HTTP requests;
  • Creates an autorun.inf file;
  • 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
  • Checks for the presence of known devices from debuggers and forensic tools;
  • 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;
  • Attempts to modify UAC prompt behavior;
  • Generates some ICMP traffic;
  • Ciphering the records located on the sufferer’s disk drive — so the sufferer can no more use the data;
  • Preventing regular accessibility to the sufferer’s workstation;


The most regular networks where Ursu.887634 Trojans are injected are:

  • By ways of phishing emails;
  • As a consequence of customer ending up on a source that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will either cipher the information on the victim’s PC or stop the device from operating in an appropriate fashion – while also placing a ransom note that discusses the requirement for the victims to impact the payment for the objective of decrypting the papers or bring back the file system back to the preliminary condition. In most circumstances, the ransom note will certainly show up when the client reboots the PC after the system has currently been harmed.

Ursu.887634 distribution networks.

In numerous corners of the globe, Ursu.887634 expands by jumps and bounds. Nevertheless, the ransom money notes as well as methods of extorting the ransom money quantity might differ relying on specific local (local) setups. The ransom money notes as well as methods of extorting the ransom money amount may differ depending on certain neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty informs about unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having spotted some unlicensed applications made it possible for on the sufferer’s gadget. The sharp then demands the customer to pay the ransom.

    Faulty declarations concerning illegal web content.

    In nations where software program piracy is much less popular, this approach is not as effective for the cyber frauds. Alternatively, the Ursu.887634 popup alert may falsely claim to be originating from a police establishment and will certainly report having located kid pornography or various other illegal data on the device.

    Ursu.887634 popup alert may incorrectly assert to be acquiring from a regulation enforcement institution and will report having situated child porn or various other unlawful information on the device. The alert will in a similar way include a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 12B06A92
md5: f96de15712cd5cbd8a09991183eab80d
name: F96DE15712CD5CBD8A09991183EAB80D.mlw
sha1: 53fe958aacdc2b2980aff3763174a474fd34d40e
sha256: d75ec1a5e01b7730d5edd2b7bf9049bdcda9d67e714eb34aa5bfa596cc016591
sha512: 37f9de60da1c200ce8a15d045703353c2a0704ac9c98affc1c3e985233cc6ca75118b753cbccef704878b74b9c2b92d3bdd1dfcbc3dcf35879624d96f488528c
ssdeep: 12288:eiGzrLD1dy74nsJl5LAFPwYRsfB1SZygoA+bjCk0Re7KPXdyVVhb:uPLZdy74nsJbLAFIE61rgoA+bjCkKrP
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ursu.887634 also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ursu.887634
McAfee GenericRXLY-ON!F96DE15712CD
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Gen:Variant.Ursu.887634
K7GW Riskware ( 0040eff71 )
Arcabit Trojan.Ursu.DD8B52
Ad-Aware Gen:Variant.Ursu.887634
F-Secure Trojan.TR/AD.MedusaRansom.wojik
McAfee-GW-Edition GenericRXLY-ON!F96DE15712CD
FireEye Generic.mg.f96de15712cd5cbd
Emsisoft Gen:Variant.Ursu.887634 (B)
Avira TR/AD.MedusaRansom.wojik
MAX malware (ai score=84)
Antiy-AVL Trojan/Win32.Wacatac
Microsoft Trojan:Win32/Wacatac.DD!ml
GData Gen:Variant.Ursu.887634
Cynet Malicious (score: 90)
AhnLab-V3 Trojan/Win32.Agent.R342416
ALYac Gen:Variant.Ursu.887634
Malwarebytes Spyware.PasswordStealer
Panda Trj/GdSda.A
Rising Trojan.Ymacco!8.11BE1 (C64:YzY0OvlRzLqL35Fh)
Yandex Trojan.AD!jcPzSBeNs+g
Ikarus Trojan.MedusaRansom
eGambit Unsafe.AI_Score_86%
Fortinet W32/MedusaRansom.WOJI!tr
BitDefenderTheta Gen:NN.ZexaF.34590.LuW@aGFs2Vfi
AVG Win32:Malware-gen
Cybereason malicious.712cd5
Avast Win32:Malware-gen

How to remove Ursu.887634 ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft2

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 Ursu.887634 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Ursu.887634 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: https://howtofix.guide/gridinsoft-anti-malware/
  3. 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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