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

What is Ursu.576438 infection?

In this post you will discover about the meaning of Ursu.576438 as well as its unfavorable impact on your computer. Such ransomware are a form of malware that is specified by online scams to require paying the ransom by a target.

GridinSoft Anti-Malware Review
It is better to prevent, than repair and repent!
When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
Gridinsoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | 10% Off Coupon
Subscribe to our Telegram channel to be the first to know about news and our exclusive materials on information security.

In the majority of the situations, Ursu.576438 ransomware will certainly instruct its targets to initiate funds move for the objective of counteracting the modifications that the Trojan infection has introduced to the target’s tool.

Ursu.576438 Summary

These adjustments can be as complies with:

  • 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.
  • 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 created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Attempts to stop active services;
  • Exhibits possible ransomware file modification behavior;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents situated on the victim’s disk drive — so the target can no longer use the data;
  • Preventing normal access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most common networks where Ursu.576438 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 an effect of user winding up on a source that organizes a destructive software program;

As soon as the Trojan is effectively injected, it will either cipher the data on the victim’s PC or avoid the gadget from working in a proper manner – while also putting a ransom money note that discusses the demand for the sufferers to impact the payment for the function of decrypting the papers or recovering the data system back to the first problem. In the majority of circumstances, the ransom money note will certainly come up when the client restarts the PC after the system has actually currently been damaged.

Ursu.576438 circulation networks.

In various edges of the world, Ursu.576438 expands by leaps as well as bounds. However, the ransom notes and tricks of extorting the ransom money quantity may vary depending on particular neighborhood (regional) settings. The ransom notes and also techniques of obtaining the ransom quantity may vary depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty notifies about unlicensed software.

    In certain areas, the Trojans often wrongfully report having actually found some unlicensed applications enabled on the target’s tool. The sharp then demands the user to pay the ransom money.

    Faulty declarations about prohibited material.

    In countries where software piracy is less popular, this method is not as reliable for the cyber scams. Conversely, the Ursu.576438 popup alert might incorrectly assert to be originating from a law enforcement organization as well as will certainly report having located child porn or other illegal information on the gadget.

    Ursu.576438 popup alert may wrongly declare to be deriving from a legislation enforcement institution and also will report having situated kid pornography or various other prohibited data on the gadget. The alert will similarly contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 0BDE6FFF
md5: 9f851941f5b933386ceb612a12a68ac9
name: 9F851941F5B933386CEB612A12A68AC9.mlw
sha1: 2a47d0cb3f66078e7d0ab0c8f10ceaf9bbe6811c
sha256: 4c103a3aef203a6e2cc7d42f25aab0f17bf56989dae111f89b9addef1f3dcdfe
sha512: 7e10b2744339611da09d26f153701e555239d199f797a6fc97eb38c82f771fe2df129ad76d31744f3a8b33799fc0cde316ae65e4cf3b167c7fd21de9d71a50bf
ssdeep: 12288:hvS+Y0ijTXtIFLSGgONBdIPZspDLg/sXD2:N+TXq5SbYDIhsOMa
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 Donald Kackman
InternalName: Cool Clock Screen Saver
FileVersion: 1.1
CompanyName: IT Software Engineering, Inc.
Comments: Written by Don Kackman
ProductName: Cool Clock Screen Saver
ProductVersion: 1.1
FileDescription: Cool Clock Screen Saver
OriginalFilename: ClockSaver.scr
Translation: 0x0409 0x04b0

Ursu.576438 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ursu.576438
FireEye Generic.mg.9f851941f5b93338
ALYac Gen:Variant.Ursu.576438
AegisLab Trojan.Win32.Ursu.4!c
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Gen:Variant.Ursu.576438
K7GW Riskware ( 0040eff71 )
Cybereason malicious.1f5b93
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky Trojan-Ransom.Win32.Cryptor.cpx
Alibaba Ransom:Win32/Cryptor.b3ab8f13
NANO-Antivirus Trojan.Win32.Azorult.gakllk
Rising Trojan.Casur!8.10E51 (CLOUD)
Ad-Aware Gen:Variant.Ursu.576438
Emsisoft Gen:Variant.Ursu.576438 (B)
F-Secure Trojan.TR/Strictor.suecb
Zillya Trojan.Kryptik.Win32.1713176
TrendMicro Ransom.Win32.RYUK.HTW
McAfee-GW-Edition Artemis
Sophos Mal/Generic-S
Jiangmin Trojan.PSW.Predator.nk
Avira TR/Strictor.suecb
MAX malware (ai score=81)
Microsoft Trojan:Win32/Predator.GJ!MTB
Arcabit Trojan.Ursu.D8CBB6
ZoneAlarm Trojan-Ransom.Win32.Cryptor.cpx
GData Gen:Variant.Ursu.576438
Cynet Malicious (score: 85)
McAfee Artemis!9F851941F5B9
VBA32 BScope.TrojanPSW.Azorult
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Kryptik.GWHK
TrendMicro-HouseCall Ransom.Win32.RYUK.HTW
Tencent Malware.Win32.Gencirc.11695378
Fortinet W32/Kryptik.GWHK!tr.ransom
BitDefenderTheta Gen:NN.ZexaF.34590.Uu0@aiLn5Dei
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_70% (D)
Qihoo-360 Win32/Ransom.Cryptor.HwoCPBkA

How to remove Ursu.576438 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 GridinSoft1

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 Ursu.576438 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.576438 you can always ask me in the comments for getting help.

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)


  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.

Leave a Reply