GANDCRAB 5.0.1 Ransom Virus – How to Remove It and Restore Data
REMOÇÃO DE AMEAÇAS

GANDCRAB 5.0.1 Ransom Virus – How to Remove It and Restore Data

This article has been created in order to show you how you can remove the GANDCRAB 5.0.1 vírus ransomware and how you can try and recover files, criptografado por GANDCRAB 5.0.1 without having to pay the ransom to the cyber-crooks.

o GANDCRAB v5.0 ransomware was just updated in a 5.0.1 version with some minor improvements in it. The virus’s main goal is to enter a victim PC while unnoticed and encrypt the files on the victimized machine, after which leave behind a random file extension. O vírus em seguida, cai uma nota de resgate, começando com 5 letters and looking like the following{5 símbolos aleatórios}-DECRYPT.txt, unlike the previous variant which used an .html file type for it’s note. A nota de resgate de GANDCRAB 5.0.1 aims to convince victims to pay ransom in order to get their encrypted files restored back to their working state. In the events that your computer has been infected by GANDCRAB 5.0.1 you should read this article. It aims to help you understand more about how GANDCRAB works and shows methods to erase this virus and try and recover files, encrypted by it without directly paying ransom.

Resumo ameaça

NomeGANDCRAB 5.0.1
Tiporansomware, Cryptovirus
Pequena descriçãoVersion of GandCrab ransomware. It encrypts valuable files in order to extrort a ransom payment from victims.
Os sintomasCorrupted files are marked with an extension of five random letters. The access to them is restricted. Ransomware creators demand a ransom in DASH or Bircoin cryptocurrency.
distribuição MétodoOs e-mails de spam, Anexos de e-mail
Ferramenta de detecção Veja se o seu sistema tem sido afetada por GANDCRAB 5.0.1

Baixar

Remoção de Malware Ferramenta

Experiência de usuárioParticipe do nosso Fórum para discutir GANDCRAB 5.0.1.
Ferramenta de recuperação de dadosWindows Data Recovery por Stellar Phoenix Aviso prévio! Este produto verifica seus setores de unidade para recuperar arquivos perdidos e não pode recuperar 100% dos arquivos criptografados, mas apenas alguns deles, dependendo da situação e se você tem ou não reformatado a unidade.

GANDCRAB 5.0.1 – Métodos de distribuição

The latest iteration of ransomware GANDCRAB does not cheat on the old method of being replicated. The malware may infect via comromised websites, the main idea behind which is to pretend that the program you are looking for online has a crack that is available for download. This fake WordPress download site URLs is become more and more common practice as we have detected over recent months. Here is how a fake crack URL from the previous GandCrab version appears like when you look for the cracks for several converters, system tools and other types of seemingly useful programs:

The full list of programs that are imitated by the GandCrab can be seen on the related story underneath:

relacionado: GandCrab 4 Rachaduras ransomware hoje infecta através do software

But this is not the only main source of propagation used by GandCrab 5.0.1 ransomware, since the virus may also be spread via the most widely used method for spreading ransomware viruses and that is via e-mail spam messages. The previous GandCrab iteration often used spam e-mails that carried around malicious e-mail attachments, também conhecido como malspam. This type of activity was used to trick the victims into clicking on “I am not a robot” after downloading a PDF file and then this results in a Microsoft Word file that opens up with malicious Macros. The e-mails may appear like the following:

De: “Brandon ClayBrandon@cdkconstruction.org
Sujeito: Electricity bill Feb-6509
Anexo: Feb-10451.pdf
Body Text: Download the attached file.

The .PDF file may show the following after being opened:

Depois disto, the user is misled to click on “Enable Content” on a new Microsoft Word file that derives from the .PDF file and after this is done, GANDCRAB may trigger the infection:

GANDCRAB 5.0.1 ransomware – Análise

When a victim PC becomes infected with the ransomware GANDCRAB vírus, a 5.0.1 version drops and activates it’s main Binary file, which has different names and is located in a randomly named folder in the “USERS” profile:

→ C:\Comercial{Nome do usuário}\Desktop\{GandCrab virus file name}.Exe

Após este tenha concluído, the GANDCRAB ransomware may also drop it’s ransom note file, which appears like the following image:

Texto da Imagem:

= GANDCRAB V5.0.1 =
Atenção!
Todos os seus arquivos, documentos, fotos, bases de dados e outros arquivos importantes são criptografadas e tem a extensão: {5 letras aleatórias}
O único método de recuperação de arquivos é a compra de uma chave privada única. Só podemos dar-lhe esta chave e só nós podemos recuperar seus arquivos.
O servidor com a chave está em uma rede fechada TOR. Você pode chegar lá pelas seguintes formas:

———————————————————————–
| 0. Baixar navegador Tor - https://www.torproject.org/

| 1. Instalar Tor Navegador
| 2. Abrir Tor Navegador
| 3. Abrir link no navegador TOR http://gandcrabmfe6mnef.onion/{victim’s unique ID}
| 4. Siga as instruções nesta página

Em nossa página você vai ver instruções sobre o pagamento e ter a oportunidade para descriptografar 1 arquivo de graça.

ATENÇÃO!
Danosos, a fim de evitar que dados:
• Não modifique arquivos criptografados
• Não altere dados abaixo

The ransom note then leads the victim to visit a Tor-based web page, which is similar to the other GandCrab versions, appearing like the image below shows:

To make sure that the victim does not miss out on the notification, GANDCRAB 5.0.1 also sets the wallpaper to the following:

In addition to making sure the victim knows of it’s presence, GANDCRAB 5.0.1 does way more than just that. The virus may also perform other activities on the user PC, such as adding registry values in many Windows registry sub-keys. Tão longe, GANDCRAB 5.0.1 is reported to access the following sub-keys in the Windows Registry database:

→ HKEY_CURRENT_USER Control Panel International
HKEY_CURRENT_USER SOFTWARE keys_data data
HKEY_LOCAL_MACHINE HARDWARE DESCRIPTION System CentralProcessor 0
HKEY_LOCAL_MACHINE SOFTWARE Microsoft Wbem CIMOM
HKEY_LOCAL_MACHINE SOFTWARE Microsoft Windows NT CurrentVersion
HKEY_LOCAL_MACHINE SOFTWARE ex_data data
HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services Tcpip Parameters

o GANDCRAB 5.0.1 also creates the following mutexes on the infected computer:

Global\8A5BA8BEE36925045F5C.lock
Global\XIAKFoxSKGOfSGOoSFOOFNOLPE

But the main indicators of compromise are the connections which are made by this iteration of GandCrab ransomware, which are reported at VMRay to be the following IP addresses:

endereços IP, related to GANDCRAB 5.0.1
52.29.192.136
178.33.233.202
92.53.96.201
87.236.16.31
77.104.171.238
146.66.72.87
69.73.180.151
87.236.16.29
173.247.242.133
188.165.53.185
107.178.113.162
188.64.184.90
213.186.33.3
50.87.58.165
80.77.123.23
178.238.37.162
223.26.62.72
77.104.144.25
191.252.51.37
104.28.30.160
202.43.45.181
87.236.16.208
103.27.238.31
89.252.187.72
179.188.11.34
104.24.104.13
51.68.50.168
50.63.202.79
104.27.163.241
104.28.29.142
213.186.33.186
194.58.56.95
66.96.147.67
67.227.236.96
104.31.76.95
171.244.34.167
217.174.149.130
70.40.197.96
93.125.99.121
94.231.109.239
137.74.238.33
185.135.88.105
103.107.17.102
95.213.173.173
104.27.187.113
104.24.102.153
213.186.33.17
186.202.153.158
45.33.91.79
87.236.19.135
94.73.148.18
209.182.208.245
217.160.0.27
217.160.0.234
157.56.120.207
157.56.120.208
13.107.3.128
40.121.213.159

GANDCRAB 5.0.1 ransomware – Processo de criptografia

o 5.0.1 version of ransomware GANDCRAB virus is believed to utilize the Salsa20 Algoritmo de criptografia. Unlike the previous versions of GandCrab, this encryption mode is much faster in its encryption process so that it is more difficult to be halted. o ransomware GANDCRAB may perform the infection process in the following chronological steps:

Degrau 1: The virus scans the computer for the files it wants encrypted. Usually those files are:

  • documentos.
  • vídeos.
  • Arquivos de áudio.
  • imagens.
  • arquivo.
  • Bases de dados.
  • The virus skips scanning in important Windows directories, which may result in breaking your OS.

Degrau 2: GANDCRAB V5.0.1 then encrypts the files by first creating copies of the files and then encrypting the copies after which the ransomware virus may delete the original files.

Degrau 3: Após o processo de encriptação terminou, the ransomware virus creates a unique decryption key that is concealed and may have either the .KEY or the .lock extension. The file itself may also be encrypted and cannot be opened.

Degrau 4: o GANDCRAB 5.0.1 ransomware adds a random 5 letter extension to the encrypted files, making them to start appearing like the following:

Degrau 5: The GANDCRAB 5.0.1 malware likely hides it’s tracks by deleting any backups and shadow copies it might encounter. This happens by executing the following commands in Windows Command Prompt as an administrator:

→ VVS sc stop
wscsvc parada sc
parada WinDefend sc
wuauserv parar sc
BITS sc stop
sc stop ERSvc
sc stop WerSvc
cmd / C bcdedit / conjunto {padrão} recoveryenabled Não
cmd / C bcdedit / conjunto {padrão} ignoreallfailures bootstatuspolicy
C:\Windows System32 cmd.exe”/ C Vssadmin.exe Apagar Sombras / All / Quiet

Remove GANDCRAB 5.0.1 Ransomware and Restore Your Encrypted Files

If you have become a victim of the 5.0.1 iteration of ransomware GANDCRAB, then you have three choicesto pay the ransom and hope for the best (não recomendado), to pay a lot of money to a file recovery expert or to follow the instructions underneath this article and remove the virus yourself. The instructions below have been divided in manual and automatic removal methods. If manual removal does fail, then be advised that most experts would run a scan, using a specific anti-malware software. Such programs are usually designed to fully detect and remove all files and objects otherwise difficult to spot manually and in the same time they aim to protect your PC against any threats that might appear in the future too.

If your files were encrypted and you have no idea how to get them back, then we strongly suggest that you refrain from paying ransom to the cyber-crooks behind GANDCRAB 5.0.1. Doing this is not a guarantee that they will decrypt your files afterwards. Do not despair, Contudo, because you still haven’t ran out of options. We have summed up several alternative recovery methods that you can try below in the step “2. Tente restaurar arquivos, encrypted by GANDCRAB 5.0.1. Eles não são uma 100% guarantee of successful file recovery, but with their assistance, you can restore some or most of your files, depending on your situation.

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Ventsislav Krastev

Ventsislav tem vindo a cobrir o mais recente de malware, desenvolvimentos de software e mais recente tecnologia em SensorsTechForum para 3 anos. Ele começou como um administrador de rede. Formado marketing bem, Ventsislav também tem paixão pela descoberta de novas mudanças e inovações em cibersegurança que se tornam mudanças do jogo. Depois de estudar Gestão da Cadeia de Valor e, em seguida, Administração de Rede, ele encontrou sua paixão dentro cybersecrurity e é um crente forte na educação básica de cada usuário para a segurança on-line.

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