Ransom:Win32/GandCrab.R

What is Ransom:Win32/GandCrab.R infection?

In this short article you will certainly discover about the interpretation of Ransom:Win32/GandCrab.R and also its unfavorable impact on your computer system. Such ransomware are a form of malware that is elaborated by on the internet fraudulences to require paying the ransom by a victim.

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In the majority of the instances, Ransom:Win32/GandCrab.R virus will instruct its sufferers to launch funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has presented to the sufferer’s device.

Ransom:Win32/GandCrab.R Summary

These alterations 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;
  • Detects the presence of Wine emulator via function name;
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • 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 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s hard drive — so the sufferer can no longer utilize the data;
  • Preventing normal accessibility 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.

Ransom:Win32/GandCrab.R

The most common channels where Ransom:Win32/GandCrab.R Ransomware Trojans are injected are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a resource that holds a destructive software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the data on the target’s PC or avoid the gadget from functioning in a correct fashion – while additionally positioning a ransom note that states the demand for the targets to impact the repayment for the objective of decrypting the records or recovering the documents system back to the initial condition. In a lot of instances, the ransom note will certainly turn up when the customer restarts the COMPUTER after the system has actually currently been harmed.

Ransom:Win32/GandCrab.R circulation channels.

In different edges of the world, Ransom:Win32/GandCrab.R grows by jumps as well as bounds. However, the ransom money notes and methods of extorting the ransom quantity might vary relying on particular neighborhood (local) settings. The ransom money notes and also methods of obtaining the ransom money quantity may differ depending on specific regional (regional) settings.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software.

    In particular areas, the Trojans typically wrongfully report having identified some unlicensed applications made it possible for on the sufferer’s device. The sharp after that demands the user to pay the ransom.

    Faulty declarations concerning unlawful content.

    In nations where software piracy is less prominent, this technique is not as reliable for the cyber scams. Conversely, the Ransom:Win32/GandCrab.R popup alert may falsely declare to be deriving from a law enforcement establishment as well as will certainly report having located child porn or various other unlawful information on the device.

    Ransom:Win32/GandCrab.R popup alert might falsely declare to be acquiring from a law enforcement organization and will report having located kid porn or various other prohibited data on the device. The alert will likewise consist of a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 756C8A92
md5: 1f9ec3a43e5d33a4606d26a7151c565d
name: 1F9EC3A43E5D33A4606D26A7151C565D.mlw
sha1: a459030a5248c47e2692af768778bf6475bd24bb
sha256: 49a3fab36c0f86643301bfd9bfb070340938231dfaba4ef4bf32f40b9782cb5c
sha512: 4972146faa8b11b6481df6af406ad62b2d0ed220eb4a503dab6e992c3dfc34a9fcfbca35e41eb720ea8efaf06914a642fff47aa1231b9fbc72a6a82d127723c4
ssdeep: 3072:haUvoTWEmvuXdAsR+xqLr4aS13sD6aq8r:f19uXdDQ13suf8r
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2018, feahiutfe
InternalName: zvchosd4.exe
FileVersion: 1.0.0.12
ProductVersion: 1.0.0.12
Translation: 0x0639 0x04b0

Ransom:Win32/GandCrab.R also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.24943
MicroWorld-eScan Trojan.Ransom.Cerber.1
FireEye Generic.mg.1f9ec3a43e5d33a4
ALYac Trojan.Ransom.Cerber.1
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Generic.4!c
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0054039a1 )
BitDefender Trojan.Ransom.Cerber.1
K7GW Trojan ( 0054039a1 )
Cybereason malicious.43e5d3
BitDefenderTheta Gen:NN.ZexaF.34590.qy1@aKMzI4cO
Symantec ML.Attribute.HighConfidence
Avast FileRepMalware
ClamAV Win.Worm.Phorpiex-7171551-1
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/GandCrab.29b23a30
NANO-Antivirus Trojan.Win32.Stealer.fjvuaz
Rising Trojan.Kryptik!1.B677 (CLOUD)
Ad-Aware Trojan.Ransom.Cerber.1
Sophos ML/PE-A + Mal/Kryptik-DD
Comodo TrojWare.Win32.Chapak.GDF@7xenw7
F-Secure Heuristic.HEUR/AGEN.1106536
Zillya Trojan.Chapak.Win32.23806
McAfee-GW-Edition Trojan-FQPW!1F9EC3A43E5D
SentinelOne Static AI – Malicious PE
Emsisoft Trojan.Ransom.Cerber.1 (B)
Ikarus Trojan.Win32.Danabot
Jiangmin Trojan.Propagate.je
MaxSecure Ransomeware.CRAB.gen
Avira HEUR/AGEN.1106536
Antiy-AVL Trojan/Win32.Chapak
Microsoft Ransom:Win32/GandCrab.R
Arcabit Trojan.Ransom.Cerber.1
SUPERAntiSpyware Ransom.GandCrab/Variant
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Ransom.Cerber.1
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.MalPe.X2055
Acronis suspicious
McAfee Trojan-FQPW!1F9EC3A43E5D
MAX malware (ai score=83)
VBA32 Malware-Cryptor.Limpopo
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
APEX Malicious
ESET-NOD32 a variant of Win32/Kryptik.GMEW
Tencent Malware.Win32.Gencirc.10b29a54
Yandex Trojan.GenAsa!K7qX6ks1/28
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.GMEW!tr
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Ransom.Cerber.HwoCVesA

How to remove Ransom:Win32/GandCrab.R 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.R 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.R 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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