Ransom:Win32/Gandcrab.C!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Ransom:Win32/Gandcrab.C!MTB infection?

In this short article you will certainly locate concerning the definition of Ransom:Win32/Gandcrab.C!MTB as well as its adverse impact on your computer system. Such ransomware are a kind of malware that is specified by on-line scams to demand paying the ransom by a sufferer.

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Most of the situations, Ransom:Win32/Gandcrab.C!MTB infection will advise its victims to start funds transfer for the purpose of counteracting the amendments that the Trojan infection has actually introduced to the sufferer’s gadget.

Ransom:Win32/Gandcrab.C!MTB 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.
  • 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.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • 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!
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a slightly modified copy of itself;
  • 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 disk — so the sufferer can no more make use of the information;
  • Preventing routine accessibility to the sufferer’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
ipv4bot.whatismyipaddress.com Trojan.Ransom.GandCrab.Gen.2
ns1.wowservers.ru Trojan.Ransom.GandCrab.Gen.2
carder.bit Trojan.Ransom.GandCrab.Gen.2
ns2.wowservers.ru Trojan.Ransom.GandCrab.Gen.2
ransomware.bit Trojan.Ransom.GandCrab.Gen.2

Ransom:Win32/Gandcrab.C!MTB

The most regular networks through which Ransom:Win32/Gandcrab.C!MTB Ransomware are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of customer ending up on a source that hosts a malicious software program;

As quickly as the Trojan is successfully injected, it will either cipher the data on the sufferer’s PC or avoid the device from functioning in a proper manner – while also positioning a ransom note that mentions the requirement for the sufferers to effect the repayment for the purpose of decrypting the documents or recovering the documents system back to the initial problem. In a lot of instances, the ransom money note will turn up when the customer reboots the PC after the system has already been damaged.

Ransom:Win32/Gandcrab.C!MTB distribution channels.

In various edges of the world, Ransom:Win32/Gandcrab.C!MTB expands by jumps and also bounds. However, the ransom notes as well as methods of obtaining the ransom amount might differ depending upon particular regional (local) setups. The ransom notes as well as methods of extorting the ransom money quantity may vary depending on specific local (local) settings.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having actually spotted some unlicensed applications allowed on the target’s device. The alert then demands the individual to pay the ransom money.

    Faulty statements about illegal web content.

    In nations where software program piracy is much less prominent, this technique is not as effective for the cyber fraudulences. Alternatively, the Ransom:Win32/Gandcrab.C!MTB popup alert may wrongly assert to be deriving from a law enforcement institution and will certainly report having situated kid porn or other illegal information on the device.

    Ransom:Win32/Gandcrab.C!MTB popup alert might wrongly claim to be acquiring from a regulation enforcement establishment as well as will certainly report having situated kid pornography or other prohibited information on the gadget. The alert will in a similar way include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 6E944F67
md5: 36308eedc22f7bc087587c6a9bbdf2e6
name: 36308EEDC22F7BC087587C6A9BBDF2E6.mlw
sha1: 2a327bd8aab5a2bbdc55af2ea17495c69cf49ce0
sha256: 4fdd53fab725461c5e245316e98cdafb82d2b09c8102fd8f34f9da42cdda8a6f
sha512: f75867682fcfad651d8d83e40fa737d38528472b9de3ca27814521c7d2bc361af1a5fa5a8b1ef61f346a2b183231ecbb88da70d90e74792beafc17122579895a
ssdeep: 3072:1pTK+0e+O4+F4O9+l34S4PCpF60NcdIyEVVPY/rOdUnzNXnyNZj12+96Di:TEe2+7034STm8wrOdUtnyN9cI6Di
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Gandcrab.C!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Ransom.GandCrab.Gen.2
FireEye Generic.mg.36308eedc22f7bc0
CAT-QuickHeal Trojan.Cloxer.A06
McAfee Trojan-FPPS!36308EEDC22F
Cylance Unsafe
Zillya Trojan.GandCrypt.Win32.187
Sangfor Virus_Suspicious.Win32.Sality.ae
K7AntiVirus Trojan ( 0053305e1 )
BitDefender Trojan.Ransom.GandCrab.Gen.2
K7GW Trojan ( 0053305e1 )
Cybereason malicious.dc22f7
Cyren W32/S-5713ab17!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Dropper.Gandcrab-6981194-1
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Encoder.fbzblw
ViRobot Trojan.Win32.GandCrab.Gen.A
AegisLab Trojan.Win32.GandCrypt.j!c
Tencent Malware.Win32.Gencirc.10b9cfdd
Ad-Aware Trojan.Ransom.GandCrab.Gen.2
Emsisoft Trojan.Ransom.GandCrab.Gen.2 (B)
Comodo TrojWare.Win32.Magniber.FGH@7nyazg
F-Secure Trojan.TR/AD.GandCrab.blqzd
DrWeb Trojan.Encoder.24384
VIPRE BehavesLike.Win32.Malware (v)
TrendMicro Ransom_GANDCRAB.SMD4
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
Sophos Mal/Generic-R + Mal/Agent-AUL
Ikarus Trojan-Ransom.GandCrab
Jiangmin RiskTool.Generic.jev
MaxSecure Ransomeware.GandCrypt.Gen
Avira TR/AD.GandCrab.blqzd
MAX malware (ai score=99)
Antiy-AVL Trojan/Win32.TSGeneric
Microsoft Ransom:Win32/Gandcrab.C!MTB
Arcabit Trojan.Ransom.GandCrab.Gen.2
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Ransom.GandCrab.Gen.2
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Gandcrab.Exp
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.nyX@aiSP6fci
ALYac Trojan.Ransom.GandCrab.Gen.2
TACHYON Ransom/W32.GandCrab
VBA32 BScope.TrojanRansom.GandCrypt
Malwarebytes Trojan.MalPack.GS
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.GGUV
TrendMicro-HouseCall Ransom_GANDCRAB.SMD4
Rising Ransom.GandCrypt!8.F33E (CLOUD)
Yandex Trojan.GenAsa!ZVrjIOBhIdQ
SentinelOne Static AI – Malicious PE
Fortinet W32/GenKryptik.CNAR!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Ransom.GandCrab.HwoCZTwA

How to remove Ransom:Win32/Gandcrab.C!MTB ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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.C!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.C!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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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