Ransom:Win32/GandCrab.MTD!bit

Written by Robert Bailey

What is Ransom:Win32/GandCrab.MTD!bit infection?

In this post you will certainly find concerning the definition of Ransom:Win32/GandCrab.MTD!bit and also its adverse effect on your computer system. Such ransomware are a kind of malware that is clarified by on the internet frauds to demand paying the ransom money by a sufferer.

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In the majority of the cases, Ransom:Win32/GandCrab.MTD!bit ransomware will certainly instruct its targets to launch funds transfer for the purpose of counteracting the modifications that the Trojan infection has introduced to the sufferer’s gadget.

Ransom:Win32/GandCrab.MTD!bit 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.
  • Attempts to connect to a dead IP:Port (2 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.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Sorbian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Detects Sandboxie through the presence of a library;
  • Deletes its original binary from disk;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • A system process is generating network traffic likely as a result of process injection;
  • 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.
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Ciphering the files located on the target’s hard disk drive — so the sufferer can no more utilize 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
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Ransom:Win32/GandCrab.MTD!bit

One of the most typical networks through which Ransom:Win32/GandCrab.MTD!bit Trojans are infused are:

  • By means of phishing emails;
  • As a repercussion of customer winding up on a source that hosts a destructive software;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or prevent the tool from working in a correct fashion – while also putting a ransom money note that discusses the need for the victims to effect the settlement for the function of decrypting the files or recovering the documents system back to the first problem. In a lot of instances, the ransom money note will show up when the client restarts the PC after the system has actually currently been damaged.

Ransom:Win32/GandCrab.MTD!bit distribution networks.

In various corners of the world, Ransom:Win32/GandCrab.MTD!bit grows by jumps as well as bounds. Nonetheless, the ransom notes as well as methods of extorting the ransom amount might vary depending on certain local (local) settings. The ransom notes as well as tricks of extorting the ransom money quantity might differ depending on specific regional (local) setups.

Ransomware injection

For instance:

    Faulty signals about unlicensed software program.

    In particular areas, the Trojans commonly wrongfully report having detected some unlicensed applications enabled on the sufferer’s tool. The sharp then requires the individual to pay the ransom.

    Faulty declarations concerning prohibited content.

    In nations where software application piracy is less prominent, this technique is not as reliable for the cyber scams. Conversely, the Ransom:Win32/GandCrab.MTD!bit popup alert might falsely declare to be deriving from a police establishment and will certainly report having located youngster pornography or various other illegal information on the device.

    Ransom:Win32/GandCrab.MTD!bit popup alert might falsely declare to be obtaining from a legislation enforcement institution and also will report having situated child porn or various other prohibited data on the device. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: E0E8A1C3
md5: 52d34362defcccc915887b76ea3f4709
name: 52D34362DEFCCCC915887B76EA3F4709.mlw
sha1: f82c5315655d23d68c77267d5d9ec8df3fd22557
sha256: 98f6169722faeecd1b4fdd88a7e5fa216bc70c3ba8a852f3bf9fc17c7ccd0f9b
sha512: 2cb5ff3c937d0a581b7cb4862f9ac0167e38c4f4f601964395bc3f60750aa35bacbf993f245d60e8df3a1e3b73fbf1952b84bf5a86037996e79a9418148569f7
ssdeep: 3072:uil4e10Tt6jN0lIoMp5K+5libMEVDi+suIw+vLBAx:uil4g0TsqyoT0Z+DixuIhTO
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: tgabhryj.exe
ProductVersion: 1.0.0.11

Ransom:Win32/GandCrab.MTD!bit also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0053d5971 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.23869
Cynet Malicious (score: 100)
ALYac Trojan.GenericKDZ.46912
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.1463520
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (D)
Alibaba Ransom:Win32/GandCrab.4600163c
K7GW Trojan ( 0053d5971 )
Cybereason malicious.2defcc
Cyren W32/Kryptik.HV.gen!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GKDT
APEX Malicious
Avast FileRepMalware
ClamAV Win.Malware.Generic-6666686-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.GenericKDZ.46912
NANO-Antivirus Trojan.Win32.Stealer.fhplwi
SUPERAntiSpyware Ransom.GandCrab/Variant
MicroWorld-eScan Trojan.GenericKDZ.46912
Tencent Win32.Trojan.Generic.Swkx
Ad-Aware Trojan.GenericKDZ.46912
Sophos Mal/Generic-S + Mal/GandCrab-B
Comodo TrojWare.Win32.Ransom.GandCrab.GD@800qia
BitDefenderTheta Gen:NN.ZexaF.34688.lu0@a4kgt!fG
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.GANDCRAB.SMJC.hp
McAfee-GW-Edition BehavesLike.Win32.MultiPlug.ch
FireEye Generic.mg.52d34362defcccc9
Emsisoft Trojan.GenericKDZ.46912 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.GandCrypt.kf
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1106547
eGambit Unsafe.AI_Score_90%
Microsoft Ransom:Win32/GandCrab.MTD!bit
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.GenericKDZ.46912
AhnLab-V3 Malware/Gen.Generic.C2678179
Acronis suspicious
McAfee Trojan-FQPW!52D34362DEFC
MAX malware (ai score=100)
VBA32 BScope.Trojan.CryptInject
Malwarebytes Trojan.MalPack
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMJC.hp
Rising Trojan.Kryptik!1.B3B1 (CLOUD)
Yandex Trojan.GenAsa!6w9WJWAb7HE
Ikarus Trojan.Win32.Danabot
Fortinet W32/Kryptik.CNB!tr
AVG FileRepMalware
Paloalto generic.ml

How to remove Ransom:Win32/GandCrab.MTD!bit 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 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/GandCrab.MTD!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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Ransom:Win32/GandCrab.MTD!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/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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