Ransom:Win32/GandCrab.AD!MTB

Written by Robert Bailey

What is Ransom:Win32/GandCrab.AD!MTB infection?

In this article you will discover concerning the interpretation of Ransom:Win32/GandCrab.AD!MTB and its negative effect on your computer. Such ransomware are a form of malware that is specified by on-line fraudulences to demand paying the ransom money by a target.

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Most of the cases, Ransom:Win32/GandCrab.AD!MTB infection will advise its victims to initiate funds move for the purpose of counteracting the changes that the Trojan infection has actually introduced to the sufferer’s gadget.

Ransom:Win32/GandCrab.AD!MTB Summary

These adjustments can be as complies with:

  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Operates on local firewall’s policies and settings;
  • Creates a copy of itself;
  • Attempts to disable System Restore. System Restore function – allows you to revert the computer’s state (system files, applications, and system settings) to that of a previous point in time, which can be used to recover after a virus attack.
  • Attempts to modify or disable Security Center warnings;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Ciphering the files situated on the victim’s disk drive — so the target can no longer make use of the data;
  • 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.
Similar behavior
Related domains
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Ransom:Win32/GandCrab.AD!MTB

One of the most regular channels whereby Ransom:Win32/GandCrab.AD!MTB Ransomware are injected are:

  • By ways of phishing emails;
  • As a consequence of user ending up on a source that organizes a harmful software;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the target’s computer or avoid the device from functioning in an appropriate manner – while additionally placing a ransom money note that discusses the requirement for the targets to impact the payment for the purpose of decrypting the files or restoring the documents system back to the initial condition. In many circumstances, the ransom note will certainly show up when the customer restarts the PC after the system has already been damaged.

Ransom:Win32/GandCrab.AD!MTB circulation channels.

In different edges of the world, Ransom:Win32/GandCrab.AD!MTB grows by leaps and also bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom money quantity might differ depending upon certain neighborhood (regional) setups. The ransom money notes and tricks of obtaining the ransom amount might vary depending on particular local (regional) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In particular locations, the Trojans often wrongfully report having spotted some unlicensed applications enabled on the target’s gadget. The sharp then demands the user to pay the ransom money.

    Faulty statements regarding illegal material.

    In nations where software piracy is much less prominent, this technique is not as effective for the cyber fraudulences. Alternatively, the Ransom:Win32/GandCrab.AD!MTB popup alert may incorrectly claim to be deriving from a law enforcement establishment and will report having situated kid pornography or other unlawful data on the gadget.

    Ransom:Win32/GandCrab.AD!MTB popup alert might incorrectly assert to be deriving from a regulation enforcement organization as well as will report having situated child porn or various other unlawful information on the device. The alert will in a similar way have a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: AAD25BB8
md5: 9095f911856b12f5ef337e7d04d957cd
name: 9095F911856B12F5EF337E7D04D957CD.mlw
sha1: 88c95304fdab06bc4e90f458e072e695cd3ff29c
sha256: 35e45fb93c4d520bfff4b6b319a49ffe41b421c6fbefe3c7ff89e55339f94c2c
sha512: 80f083c1f2a6226fd357a607b6859fd51d77421286db94e4bbf932264fbd74e65ae3abb4b599725375808866dc5232ec37bf2aef287a85cbea25b4c0d5ae5df4
ssdeep: 3072:BHEBdb7q/uYD8gmRwgbkmJi1D8dHBKyi7td77HOw8nl4DIpB5BAykT:BH2o5t2wgbkEhKyi7td7rN4lXkT
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/GandCrab.AD!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Win32.HLLW.Autoruner2.49703
Cynet Malicious (score: 100)
ALYac Trojan.Brsecmon.1
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
BitDefender Trojan.Brsecmon.1
Cybereason malicious.1856b1
Cyren W32/Kryptik.WV.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.GTEZ
APEX Malicious
Kaspersky HEUR:Trojan.Win32.Generic
MicroWorld-eScan Trojan.Brsecmon.1
Ad-Aware Trojan.Brsecmon.1
Sophos Mal/Generic-R + Mal/GandCrab-G
Comodo TrojWare.Win32.Ransom.GandCrab.DA@888hfh
BitDefenderTheta Gen:NN.ZexaF.34686.xCW@aKFR6xe
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.fm
FireEye Generic.mg.9095f911856b12f5
Emsisoft Trojan.Brsecmon.1 (B)
Avira HEUR/AGEN.1102735
Microsoft Ransom:Win32/GandCrab.AD!MTB
GData Trojan.Brsecmon.1
AhnLab-V3 Trojan/Win32.MalPe.R273780
McAfee GenericRXAA-AA!9095F911856B
MAX malware (ai score=87)
VBA32 BScope.Trojan.AET.281105
Malwarebytes Malware.AI.4162698022
Rising Malware.Heuristic!ET#95% (RDMK:cmRtazq1EQuMi7yFxWvASN8WyZ7+)

How to remove Ransom:Win32/GandCrab.AD!MTB 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.AD!MTB 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.AD!MTB 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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