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

What is Trojan:Win32/Occamy.CAA infection?

In this short article you will certainly discover concerning the interpretation of Trojan:Win32/Occamy.CAA and its adverse influence on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet frauds to require paying the ransom money by a target.

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Most of the cases, Trojan:Win32/Occamy.CAA ransomware will advise its targets to launch funds move for the purpose of reducing the effects of the changes that the Trojan infection has actually presented to the sufferer’s tool.

Trojan:Win32/Occamy.CAA Summary

These adjustments can be as adheres to:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s hard disk — so the victim can no more use the information;
  • Preventing normal accessibility to the victim’s workstation;


The most normal networks whereby Trojan:Win32/Occamy.CAA Ransomware are injected are:

  • By methods of phishing emails;
  • As a consequence of customer winding up on a resource that organizes a harmful software;

As soon as the Trojan is successfully injected, it will either cipher the data on the sufferer’s PC or protect against the gadget from working in a correct fashion – while additionally placing a ransom money note that discusses the need for the sufferers to effect the payment for the purpose of decrypting the papers or restoring the file system back to the first condition. In a lot of instances, the ransom money note will certainly turn up when the client reboots the PC after the system has actually already been harmed.

Trojan:Win32/Occamy.CAA circulation networks.

In numerous edges of the globe, Trojan:Win32/Occamy.CAA grows by jumps as well as bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom money quantity might vary relying on specific local (regional) settings. The ransom notes as well as methods of obtaining the ransom money quantity may vary depending on specific regional (local) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In specific areas, the Trojans usually wrongfully report having actually found some unlicensed applications made it possible for on the target’s tool. The alert then demands the individual to pay the ransom.

    Faulty declarations concerning unlawful material.

    In countries where software application piracy is less preferred, this method is not as efficient for the cyber scams. Conversely, the Trojan:Win32/Occamy.CAA popup alert might incorrectly declare to be originating from a police establishment and also will certainly report having situated kid pornography or various other prohibited data on the device.

    Trojan:Win32/Occamy.CAA popup alert might falsely claim to be acquiring from a regulation enforcement establishment as well as will report having situated child porn or other unlawful information on the gadget. The alert will likewise consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: ECFFB0F6
md5: ef081b676ed6fb4e3fb16b499a8a76b5
name: EF081B676ED6FB4E3FB16B499A8A76B5.mlw
sha1: c313428f94dd524f7c0538009e6d52b803458803
sha256: aa3dbc6b2f5edbb2760496ccc14fe9df0f7427ab5a558bbec52efd0fb52db6cf
sha512: a9ad42e8e377349ec40b92efd51531827cf18c7b421db86feb977d9ca389f1146a7779dee099192c3c8770ee6d8db8658a83b8220da87d60bdea1d42d2048736
ssdeep: 1536:u9PbWVWjCHCcbPg8LadOrxiP/bFobq3BF+wY86G+wrViPduV7gSw:ucVJHCgGdOrIhobq37v6OV5VkJ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 1998 - 2016
InternalName: MS SecurityFiles. (C)
FileVersion: 3 , 8, 1, 5
ProductName: MS SecurityFiles. (C)
ProductVersion: 3 , 8, 1, 5
FileDescription: MS SecurityFiles. (C)
OriginalFilename: MS SecurityFiles. (C)
Translation: 0x100a 0x04e3

Trojan:Win32/Occamy.CAA also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0050238c1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4513
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Chapak.ZZ6
ALYac Gen:Variant.Ransom.HydraCrypt.18
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Kryptik.67b337e3
K7GW Trojan ( 0050238c1 )
Cybereason malicious.76ed6f
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.FMTW
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan.Win32.Scar.rpzv
BitDefender Gen:Variant.Ransom.HydraCrypt.18
NANO-Antivirus Trojan.Win32.Fury.ekinvh
MicroWorld-eScan Gen:Variant.Ransom.HydraCrypt.18
Ad-Aware Gen:Variant.Ransom.HydraCrypt.18
Sophos Mal/Generic-R + Troj/CrShield-A
BitDefenderTheta Gen:NN.ZexaF.34738.gu0@aily2Rhi
VIPRE BehavesLike.Win32.Malware.rwx (mx-v)
McAfee-GW-Edition BehavesLike.Win32.Emotet.nh
Emsisoft Gen:Variant.Ransom.HydraCrypt.18 (B)
SentinelOne Static AI – Malicious PE
Webroot Trojan.Dropper.Gen
Avira TR/Crypt.Agent.pmnet
Antiy-AVL Trojan/Generic.ASMalwS.2B39EC2
Microsoft Trojan:Win32/Occamy.CAA
AegisLab Trojan.Win32.HydraCrypt.4!c
GData Gen:Variant.Ransom.HydraCrypt.18
AhnLab-V3 Win-Trojan/Gandcrab08.Exp
McAfee Trojan-FKWJ!EF081B676ED6
MAX malware (ai score=100)
VBA32 Trojan-Ransom.Fury
Malwarebytes Ransom.GandCrab
Rising [email protected] (RDML:iCXrAy3MNq4LuMQA8J+Mhg)
Ikarus Trojan.Win32.Crypt
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/HydraCrypt.E!tr.ransom
AVG Win32:Malware-gen

How to remove Trojan:Win32/Occamy.CAA 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 Trojan:Win32/Occamy.CAA 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/Occamy.CAA you can always ask me in the comments for getting help.

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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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