Ransom:Win32/Dircrypt.C

What is Ransom:Win32/Dircrypt.C infection?

In this article you will locate concerning the meaning of Ransom:Win32/Dircrypt.C as well as its negative impact on your computer. Such ransomware are a kind of malware that is clarified by online frauds to demand paying the ransom money by a sufferer.

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In the majority of the instances, Ransom:Win32/Dircrypt.C virus will advise its victims to start funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the victim’s device.

Ransom:Win32/Dircrypt.C Summary

These adjustments can be as follows:

  • 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Likely virus infection of existing system binary;
  • Operates on local firewall’s policies and settings;
  • 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 disable Windows Defender;
  • Attempts to modify or disable Security Center warnings;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the sufferer’s disk drive — so the victim can no longer utilize the information;
  • Preventing regular 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.

Ransom:Win32/Dircrypt.C

The most regular networks where Ransom:Win32/Dircrypt.C Ransomware are infused are:

  • By ways of phishing emails;
  • As a repercussion of customer winding up on a source that holds a malicious software;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s PC or avoid the gadget from functioning in a proper way – while likewise positioning a ransom note that discusses the requirement for the targets to effect the settlement for the objective of decrypting the records or recovering the data system back to the initial problem. In the majority of circumstances, the ransom money note will certainly come up when the client reboots the PC after the system has currently been harmed.

Ransom:Win32/Dircrypt.C distribution channels.

In different corners of the globe, Ransom:Win32/Dircrypt.C grows by jumps and bounds. Nevertheless, the ransom money notes and also methods of extorting the ransom money quantity may vary relying on certain neighborhood (local) settings. The ransom notes and tricks of obtaining the ransom quantity may differ depending on particular regional (local) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having spotted some unlicensed applications made it possible for on the victim’s gadget. The alert after that demands the customer to pay the ransom.

    Faulty statements regarding unlawful web content.

    In nations where software piracy is less popular, this method is not as reliable for the cyber fraudulences. Conversely, the Ransom:Win32/Dircrypt.C popup alert might incorrectly declare to be stemming from a police organization and also will certainly report having situated youngster pornography or various other prohibited information on the tool.

    Ransom:Win32/Dircrypt.C popup alert may wrongly claim to be acquiring from a legislation enforcement institution and also will certainly report having located kid pornography or various other unlawful data on the device. The alert will likewise contain a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 9EC0C044
md5: 9b1f5f6714bd8dd8acc5cd1ee46d6f14
name: 9B1F5F6714BD8DD8ACC5CD1EE46D6F14.mlw
sha1: da46b4acb02158cb6d80031031013a04a3e6f24d
sha256: 892dafc0c16b7f485bb9f6da08959bc1aff10bce7bb983bcdc8c4452665d4f45
sha512: 78b43bd918fd64e3e0107666dd75d8b43eb0e4626a8852814423c2b5d2c9164d180e952bd74be7dbbc1c101bf2f5178ab2ccafaaea3f9a451c191e21c1e984d7
ssdeep: 6144:AiWISFoV8TsNWtTGfcsdVqD6Nt8E+vkRH5v6q6NuLlZNI0Zbp/4Uh:jWXFoVKOcsd4D+tb+s15SNGPKwd/h
type: PE32 executable (GUI) Intel 80386, for MS Windows, PECompact2 compressed

Version Info:

LegalCopyright:
InternalName:
FileVersion:
CompanyName:
LegalTrademarks:
ProductName:
ProductVersion:
FileDescription: Videozz
Translation: 0x0409 0x04e4

Ransom:Win32/Dircrypt.C also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Adware.InstallCore.53
Cynet Malicious (score: 100)
ALYac Gen:Variant.Strictor.175656
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.7869
CrowdStrike win/malicious_confidence_70% (D)
K7GW Riskware ( 0040eff71 )
Cybereason malicious.714bd8
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Filecoder.BH
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Strictor.175656
NANO-Antivirus Trojan.Win32.InstallCore.cvmbig
MicroWorld-eScan Gen:Variant.Strictor.175656
Tencent Malware.Win32.Gencirc.10b9b4c0
Ad-Aware Gen:Variant.Strictor.175656
Sophos Mal/Generic-S + Troj/Ransom-ADA
Comodo Malware@#10kpzt09xywqa
BitDefenderTheta AI:Packer.3AFCD98D21
VIPRE Trojan.Win32.Dircrypt.c (v)
McAfee-GW-Edition BehavesLike.Win32.HLLP.fc
FireEye Generic.mg.9b1f5f6714bd8dd8
Emsisoft Gen:Variant.Strictor.175656 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Backdoor.Androm.erq
Avira HEUR/AGEN.1112423
Antiy-AVL Trojan/Win32.Unknown
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/Dircrypt.C
Arcabit Trojan.Strictor.D2AE28
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Strictor.175656
McAfee Artemis!9B1F5F6714BD
MAX malware (ai score=86)
VBA32 BScope.Trojan-Dropper.Injector
Malwarebytes Backdoor.Bot
Panda Trj/Genetic.gen
Rising Ransom.Dircrypt!8.963 (RDMK:cmRtazrvSDPsEcZuViqL6f/kHhUR)
Yandex Trojan.GenAsa!VmxXosbUkvw
Ikarus Trojan.Win32.Ransom
Fortinet W32/Injector.ABS!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HxEAMbsA

How to remove Ransom:Win32/Dircrypt.C 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 Ransom:Win32/Dircrypt.C 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/Dircrypt.C 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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