Trojan:Win32/Occamy.C9F

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

What is Trojan:Win32/Occamy.C9F infection?

In this post you will discover about the interpretation of Trojan:Win32/Occamy.C9F and its unfavorable impact on your computer. Such ransomware are a kind of malware that is specified by on the internet frauds to require paying the ransom money by a sufferer.

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Most of the cases, Trojan:Win32/Occamy.C9F infection will certainly advise its targets to start funds transfer for the function of neutralizing the changes that the Trojan infection has actually introduced to the sufferer’s device.

Trojan:Win32/Occamy.C9F Summary

These adjustments can be as complies with:

  • A process created a hidden window;
  • 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
  • Writes a potential ransom message to disk;
  • 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.
  • Creates a copy of itself;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the victim’s hard disk — so the sufferer can no longer make use of the data;
  • Preventing normal accessibility 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.

Trojan:Win32/Occamy.C9F

The most normal networks through which Trojan:Win32/Occamy.C9F Trojans are injected are:

  • By means of phishing emails;
  • As a consequence of user ending up on a source that holds a destructive software;

As soon as the Trojan is efficiently infused, it will either cipher the information on the victim’s PC or avoid the gadget from functioning in a correct fashion – while also placing a ransom money note that discusses the demand for the sufferers to effect the settlement for the objective of decrypting the papers or recovering the data system back to the first condition. In most circumstances, the ransom note will certainly show up when the customer reboots the COMPUTER after the system has actually already been damaged.

Trojan:Win32/Occamy.C9F distribution channels.

In different edges of the world, Trojan:Win32/Occamy.C9F expands by jumps and bounds. Nonetheless, the ransom notes and also methods of extorting the ransom money quantity might differ depending upon particular local (local) settings. The ransom money notes and also methods of obtaining the ransom money amount might vary depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software application.

    In specific locations, the Trojans usually wrongfully report having discovered some unlicensed applications allowed on the sufferer’s device. The sharp then demands the individual to pay the ransom.

    Faulty statements regarding prohibited material.

    In countries where software piracy is less popular, this method is not as efficient for the cyber fraudulences. Conversely, the Trojan:Win32/Occamy.C9F popup alert might falsely claim to be originating from a law enforcement organization and will certainly report having located kid pornography or various other prohibited data on the gadget.

    Trojan:Win32/Occamy.C9F popup alert might wrongly claim to be obtaining from a law enforcement organization and will report having located child porn or other unlawful data on the gadget. The alert will similarly consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 19FACA49
md5: 5973e2ed40a2f33524a48ac1e85459cf
name: 5973E2ED40A2F33524A48AC1E85459CF.mlw
sha1: aa54b7c1345933880be38e12206f9661ecdd1a80
sha256: 9f8bfec4db6e03ba4815acf18af92ea53398016844a47eab2a60fea37c27e095
sha512: 96c1a9d26af3d1f490e23749d387f8b383800b70232c942767259e7cb392054dc9b0692b18897670fb64ab2a193c58266dfe3e29ad24ba54d8c3b9f4628d6fc9
ssdeep: 192:M7ote8k1WXCNc7m6mhWavEoh/w+I2dqHnC26ERlBWpF2GVuAX:Ml8kMXU+m6mQu5hor2UHnCI+pYQX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Occamy.C9F also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005451b81 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.MrDec
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.8598
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Filecoder.654c1460
K7GW Trojan ( 005451b81 )
Cybereason malicious.d40a2f
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.NPA
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Trojan.AV-Killer.aqW@aKls36ci
NANO-Antivirus Trojan.Win32.AntiAV.fgwaxm
MicroWorld-eScan Gen:Trojan.AV-Killer.aqW@aKls36ci
Tencent Win32.Trojan.Raas.Auto
Ad-Aware Gen:Trojan.AV-Killer.aqW@aKls36ci
Sophos Mal/Generic-R + Mal/EncPk-ACO
Comodo Malware@#fjr5bj48h3ve
BitDefenderTheta AI:Packer.0E76E8151F
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Backdoor.lh
FireEye Generic.mg.5973e2ed40a2f335
Emsisoft Gen:Trojan.AV-Killer.aqW@aKls36ci (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.AntiAV.ang
Avira TR/ATRAPS.Gen
eGambit Unsafe.AI_Score_72%
Antiy-AVL Trojan/Generic.ASMalwS.2994558
Microsoft Trojan:Win32/Occamy.C9F
Arcabit Trojan.AV-Killer.EE4C84
AegisLab Trojan.Win32.AntiAV.4!c
GData Gen:Trojan.AV-Killer.aqW@aKls36ci
TACHYON Ransom/W32.LockCrypt.13312
AhnLab-V3 Malware/Win32.Generic.C2706190
Acronis suspicious
McAfee GenericRXGL-GB!5973E2ED40A2
MAX malware (ai score=100)
VBA32 BScope.TrojanRansom.Encoder
Malwarebytes Malware.AI.3650098921
Panda Trj/GdSda.A
Rising Trojan.Filecoder!8.68 (CLOUD)
Yandex Trojan.GenAsa!gfmzB9MvuvY
Ikarus Trojan-Ransom.FileCrypter
Fortinet W32/Filecoder.NPA!tr.ransom
AVG Win32:RansomX-gen [Ransom]
Paloalto generic.ml

How to remove Trojan:Win32/Occamy.C9F virus?

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 Trojan:Win32/Occamy.C9F 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.C9F you can always ask me in the comments for getting help.

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References

  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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