Ransom:Win32/Gandcrab.D!bit

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

What is Ransom:Win32/Gandcrab.D!bit infection?

In this short article you will certainly locate about the interpretation of Ransom:Win32/Gandcrab.D!bit as well as its negative impact on your computer system. Such ransomware are a kind of malware that is clarified by on-line scams to demand paying the ransom by a sufferer.

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Most of the situations, Ransom:Win32/Gandcrab.D!bit ransomware will certainly instruct its targets to launch funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has presented to the target’s tool.

Ransom:Win32/Gandcrab.D!bit Summary

These alterations 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.
  • 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.
  • 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.

  • 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.
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the sufferer’s hard disk drive — so the target can no longer use the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.GandCrab.Gen.2
a.tomx.xyz Trojan.Ransom.GandCrab.Gen.2
ipv4bot.whatismyipaddress.com Trojan.Ransom.GandCrab.Gen.2
ns1.virmach.ru Trojan.Ransom.GandCrab.Gen.2
politiaromana.bit Trojan.Ransom.GandCrab.Gen.2
malwarehunterteam.bit Trojan.Ransom.GandCrab.Gen.2
ns2.virmach.ru Trojan.Ransom.GandCrab.Gen.2
gdcb.bit Trojan.Ransom.GandCrab.Gen.2

Ransom:Win32/Gandcrab.D!bit

The most normal networks whereby Ransom:Win32/Gandcrab.D!bit Ransomware are injected 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 winding up on a source that holds a destructive software program;

As soon as the Trojan is effectively injected, it will either cipher the data on the sufferer’s PC or protect against the device from functioning in an appropriate fashion – while additionally putting a ransom note that states the need for the sufferers to effect the settlement for the purpose of decrypting the documents or bring back the file system back to the initial condition. In most instances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has already been harmed.

Ransom:Win32/Gandcrab.D!bit distribution networks.

In various edges of the globe, Ransom:Win32/Gandcrab.D!bit grows by jumps and also bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom money quantity might differ relying on particular local (regional) setups. The ransom notes and techniques of extorting the ransom money quantity may differ depending on specific neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software program.

    In specific areas, the Trojans often wrongfully report having found some unlicensed applications enabled on the victim’s tool. The alert then requires the customer to pay the ransom.

    Faulty statements concerning prohibited content.

    In countries where software application piracy is much less prominent, this approach is not as efficient for the cyber frauds. Additionally, the Ransom:Win32/Gandcrab.D!bit popup alert might incorrectly assert to be deriving from a law enforcement establishment and also will report having situated youngster pornography or other illegal information on the device.

    Ransom:Win32/Gandcrab.D!bit popup alert may wrongly claim to be deriving from a legislation enforcement establishment as well as will report having located child pornography or other illegal information on the device. The alert will similarly contain a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: A9C02F97
md5: 6747930b6b085c292a7c9cf563863efd
name: 6747930B6B085C292A7C9CF563863EFD.mlw
sha1: 7926287b8b5a50f8e7bb44d5c52d0203395564aa
sha256: 4dc0e3ede6eec7281838c0c7c272ffe9c09a67ca3cff5abe4743b4a3ffc382a3
sha512: 24693b4fba1547c1c04d3c2a2407de72b3fc1459ec591581f3c4b5b8906a6940d0a95bcb823fd2362d4c78e3f77da1f4a55da39e4216272c7fc5f45a44548795
ssdeep: 3072:qSvrBi5j9Hhek+F1LrH29AwQDiSzVGMhTLvZNzpHH39o:qSvaB65sAwQWZuZZpHa
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Gandcrab.D!bit also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Ransom.GandCrab.Gen.2
CAT-QuickHeal Trojan.Chapak.ZZ5
ALYac Trojan.Ransom.GandCrab.Gen.2
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Generic.4!c
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0053305e1 )
BitDefender Trojan.Ransom.GandCrab.Gen.2
K7GW Trojan ( 0053305e1 )
Cybereason malicious.b6b085
Cyren W32/S-1e9a5fb1!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Emotet-6514559-0
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/GandCrab.ali1020008
NANO-Antivirus Trojan.Win32.Chapak.eyptdm
ViRobot Trojan.Win32.Ransom.174084
Tencent Malware.Win32.Gencirc.10b1ac78
Ad-Aware Trojan.Ransom.GandCrab.Gen.2
TACHYON Trojan/W32.Chapak.174084
Emsisoft Trojan.Ransom.GandCrab.Gen.2 (B)
Comodo TrojWare.Win32.Ransom.GandCrab.C@7k70r1
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.Siggen7.37822
Zillya Trojan.Chapak.Win32.122
TrendMicro Ransom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
FireEye Generic.mg.6747930b6b085c29
Sophos Mal/Generic-R + Mal/Agent-AUL
Ikarus Trojan.Crypt
Jiangmin Trojan.Chapak.f
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_94%
Antiy-AVL Trojan/Win32.Chapak
Microsoft Ransom:Win32/Gandcrab.D!bit
Arcabit Trojan.Ransom.GandCrab.Gen.2
SUPERAntiSpyware Trojan.Agent/Gen-PWS
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Ransom.GandCrab.Gen.2
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Gandcrab02.Exp
Acronis suspicious
McAfee GenericRXEF-RU!6747930B6B08
MAX malware (ai score=99)
VBA32 BScope.Trojan.Occamy
Malwarebytes Trojan.MalPack.GS
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.GDYS
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMLA.hp
Rising Trojan.Kryptik!1.B1A4 (CLOUD)
Yandex Trojan.GenAsa!CGarkXfPy2A
SentinelOne Static AI – Malicious PE
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.GUKZ!tr
BitDefenderTheta Gen:NN.ZexaF.34590.kuX@aORh9!pi
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Ransom.GandCrab.HwoCsDsA

How to remove Ransom:Win32/Gandcrab.D!bit ransomware?

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 Ransom:Win32/Gandcrab.D!bit 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 Ransom:Win32/Gandcrab.D!bit you can always ask me in the comments for getting help.

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References

  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.

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