Mal/GandCrypt-B

Written by Robert Bailey

What is Mal/GandCrypt-B infection?

In this post you will certainly find concerning the definition of Mal/GandCrypt-B and also its unfavorable influence on your computer. Such ransomware are a form of malware that is clarified by on-line fraudulences to demand paying the ransom money by a sufferer.

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It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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In the majority of the situations, Mal/GandCrypt-B virus will advise its sufferers to initiate funds move for the purpose of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

Mal/GandCrypt-B 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.
  • A process created a hidden window;
  • Unconventionial language used in binary resources: Faeroese;
  • 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
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the sufferer’s hard drive — so the victim can no more utilize the data;
  • Preventing normal 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
z.whorecord.xyz Win32:RansomX-gen [Ransom]
a.tomx.xyz Win32:RansomX-gen [Ransom]

Mal/GandCrypt-B

One of the most regular channels through which Mal/GandCrypt-B Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of user winding up on a source that holds a destructive software;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the sufferer’s PC or avoid the device from operating in an appropriate fashion – while also placing a ransom money note that discusses the need for the targets to effect the settlement for the function of decrypting the documents or bring back the file system back to the preliminary problem. In a lot of instances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually currently been harmed.

Mal/GandCrypt-B circulation networks.

In various edges of the globe, Mal/GandCrypt-B grows by jumps and bounds. Nonetheless, the ransom money notes as well as methods of obtaining the ransom amount might vary depending upon specific regional (regional) setups. The ransom notes as well as tricks of extorting the ransom quantity might differ depending on specific neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software program.

    In certain locations, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the sufferer’s device. The sharp then demands the customer to pay the ransom money.

    Faulty declarations about prohibited material.

    In countries where software piracy is much less popular, this technique is not as effective for the cyber fraudulences. Additionally, the Mal/GandCrypt-B popup alert may falsely declare to be stemming from a police institution as well as will report having situated kid porn or various other prohibited information on the tool.

    Mal/GandCrypt-B popup alert might wrongly claim to be deriving from a law enforcement establishment as well as will certainly report having located child pornography or various other unlawful data on the gadget. The alert will likewise include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 38A85170
md5: 805bd193df02376229ec3e5d44738247
name: 805BD193DF02376229EC3E5D44738247.mlw
sha1: 22f726aea913aabe7c2ca23c13466e7b41a40bb3
sha256: 855359051a95d33fe1d5c4471e277b993b59f91e1966ca0f6c1bf291193c25f8
sha512: 2255f4b88f4c97982d4a4a775ad7fd92676cdffa0411e35b2221fa018802b03b0ff2039df4e87a089e15f3d5ef4c452189a31f46ac43c4719a206e92db933ae3
ssdeep: 6144:Gk3f8qWIITGvCyuntLMJwm1TjRrhXsTRV:Gkv8qWIITG0nVzUdhXsL
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileVersus: 1.0.85.28
ProductVersus: 1.0.85.28
Translations: 0x0185 0x015e

Mal/GandCrypt-B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
McAfee Artemis!805BD193DF02
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.HKZR
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
Kaspersky UDS:DangerousObject.Multi.Generic
Sophos Mal/GandCrypt-B
BitDefenderTheta Gen:NN.ZexaF.34690.quW@aySp6clG
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.dm
FireEye Generic.mg.805bd193df023762
SentinelOne Static AI – Suspicious PE
eGambit Unsafe.AI_Score_94%
Microsoft Trojan:Win32/Glupteba!ml
ZoneAlarm UDS:DangerousObject.Multi.Generic
VBA32 BScope.Trojan.Wacatac
Rising Ransom.Stop!8.10810 (TFE:dGZlOgbgR/P2tYiwmw)
Ikarus Trojan.Win32.FakeAV
AVG Win32:RansomX-gen [Ransom]

How to remove Mal/GandCrypt-B ransomware?

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 Mal/GandCrypt-B 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 Mal/GandCrypt-B 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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