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

What is Ransom:Win32/Crilock infection?

In this article you will locate regarding the meaning of Ransom:Win32/Crilock as well as its negative effect on your computer. Such ransomware are a kind of malware that is specified by online fraudulences to require paying the ransom by a sufferer.

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In the majority of the situations, Ransom:Win32/Crilock ransomware will certainly advise its targets to start funds transfer for the objective of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s tool.

Ransom:Win32/Crilock 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.
  • 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.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to delete volume shadow copies;
  • Behavior consistent with a dropper attempting to download the next stage.;
  • 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
  • Attempts to modify browser security settings;
  • Creates a copy of itself;
  • Harvests information related to installed mail clients;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the victim’s hard disk — so the sufferer can no longer use the data;
  • Preventing normal 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
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ydyjptygiv.lubcebupip.com Ransom.Cerber.A4


The most typical channels through which Ransom:Win32/Crilock 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 individual ending up on a source that holds a malicious software program;

As soon as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s PC or protect against the device from functioning in a correct manner – while additionally putting a ransom note that points out the requirement for the victims to impact the settlement for the function of decrypting the documents or recovering the documents system back to the initial problem. In the majority of instances, the ransom note will certainly turn up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Ransom:Win32/Crilock distribution channels.

In various edges of the world, Ransom:Win32/Crilock grows by leaps and also bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom money amount may differ relying on particular regional (local) setups. The ransom money notes and tricks of obtaining the ransom amount might differ depending on specific regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software application.

    In particular areas, the Trojans typically wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s device. The sharp then demands the customer to pay the ransom.

    Faulty declarations about prohibited content.

    In nations where software application piracy is much less popular, this technique is not as effective for the cyber scams. Alternatively, the Ransom:Win32/Crilock popup alert may incorrectly declare to be deriving from a police institution and will certainly report having situated child porn or various other illegal information on the gadget.

    Ransom:Win32/Crilock popup alert may falsely declare to be deriving from a regulation enforcement establishment and will certainly report having situated kid pornography or various other illegal data on the device. The alert will in a similar way consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: C565C739
md5: bc9d9044eb73323d09df531c7f241055
name: BC9D9044EB73323D09DF531C7F241055.mlw
sha1: fc4e1ae60193926ffd6d33ce0cc74a32ba8fc57c
sha256: 09cfc2b831f7a551a209f738f2adc4b4901efc3a9c2f5742ff1881cffc21681a
sha512: 8ddd78edfe2a70eb68203e753d9fbe29c62d28d6d4dbb2f85c7cd42299f12bea10c803b7d800c4e68795436058eb69971e2a0138748acc6feb689c3fb7fceef3
ssdeep: 6144:iBheGqzPNmSpfeJ3R1ZqMJm8htOBXudW4c2Bs3fRq9ynygswULnCc5Vy0ButMgF:iebIGEh5JmaOBd4crs95g0LJ56M
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright(c) 2007 Corel Corporation
InternalName: CdrConv
CompanyName: Corel Corporation
Built on: Fri 11/21/2008 21:36:24.30
LegalTrademarks: Corel, CorelDRAW, Corel DESIGNER, Corel R.A.V.E., Corel PHOTO-PAINT, CorelTRACE and Corel CAPTURE are trademarks or registered trademarks of Corel Corporation and/or its subsidiaries in Canada, the U.S. and/or other countries.
ProductName: Corel Graphics Applications
Language Build ID: 0
FileDescription: CdrConverter
OriginalFilename: CdrConv.exe
Translation: 0x0409 0x04e4

Ransom:Win32/Crilock also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005224381 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Siggen1.56127
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Cerber.A4
ALYac Gen:Variant.Zusy.340885
Cylance Unsafe
Zillya Backdoor.Androm.Win32.36147
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Crilock.073bdca2
K7GW Trojan ( 005224381 )
Cybereason malicious.4eb733
Baidu Win32.Trojan.Kryptik.avs
Cyren W32/S-3e1d46f2!Eldorado
Symantec Packed.Generic.459
ESET-NOD32 a variant of Win32/Filecoder.TorrentLocker.A
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Zusy.340885
NANO-Antivirus Trojan.Win32.Menti.evgneg
MicroWorld-eScan Gen:Variant.Zusy.340885
Tencent Malware.Win32.Gencirc.10baa0d1
Ad-Aware Gen:Variant.Zusy.340885
Sophos Mal/Generic-R + Mal/Cerber-B
Comodo TrojWare.Win32.Kryptik.ERJ@6l0vie
BitDefenderTheta Gen:NN.ZexaF.34722.Eq0@aqzgslbi
VIPRE Trojan.Win32.Generic.pak!cobra
TrendMicro Ransom_CRYPTESLA.SMW
McAfee-GW-Edition BehavesLike.Win32.Generic.gh
FireEye Generic.mg.bc9d9044eb73323d
Emsisoft Gen:Variant.Zusy.340885 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Menti.eoh
Avira HEUR/AGEN.1124969
Antiy-AVL Trojan/Generic.ASMalwS.20BF0F1
Microsoft Ransom:Win32/Crilock
Arcabit Trojan.Zusy.D53395
ZoneAlarm Trojan.Win32.Menti.gen
GData Gen:Variant.Zusy.340885
AhnLab-V3 Win-Trojan/Lukitus2.Exp
Acronis suspicious
McAfee Trojan-FORM!BC9D9044EB73
MAX malware (ai score=100)
VBA32 Backdoor.Androm
Malwarebytes Malware.AI.2204503664
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_CRYPTESLA.SMW
Rising Trojan.Kryptik!1.AE9C (CLASSIC)
Yandex Trojan.GenAsa!iC4a5iYZ96I
Ikarus Trojan.Win32.Filecoder
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Injector.EETM!tr
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Ransom:Win32/Crilock 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 Ransom:Win32/Crilock 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 Ransom:Win32/Crilock you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
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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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