Ransom:Win32/Gandcrab

Written by Robert Bailey

What is Ransom:Win32/Gandcrab infection?

In this short article you will certainly find concerning the definition of Ransom:Win32/Gandcrab and its adverse influence on your computer. Such ransomware are a type of malware that is clarified by online scams to demand paying the ransom money by a sufferer.

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Most of the instances, Ransom:Win32/Gandcrab virus will certainly instruct its victims to start funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually introduced to the sufferer’s device.

Ransom:Win32/Gandcrab Summary

These alterations can be as adheres to:

  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • Unconventionial language used in binary resources: Ukrainian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Attempts to repeatedly call a single API many times in order to delay analysis time;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the sufferer’s hard disk — so the sufferer can no longer use 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.

Related domains:

z.whorecord.xyz BehavesLike.Win32.RansomGandCrab.rc
a.tomx.xyz BehavesLike.Win32.RansomGandCrab.rc

Ransom:Win32/Gandcrab

The most typical channels where Ransom:Win32/Gandcrab Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a resource that organizes a malicious software;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the target’s PC or prevent the device from operating in a correct way – while likewise positioning a ransom note that states the demand for the victims to effect the settlement for the objective of decrypting the records or bring back the file system back to the preliminary condition. In most instances, the ransom money note will certainly come up when the client reboots the COMPUTER after the system has actually currently been damaged.

Ransom:Win32/Gandcrab circulation channels.

In various edges of the world, Ransom:Win32/Gandcrab grows by leaps as well as bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom money quantity may differ depending on particular local (local) setups. The ransom notes and also methods of obtaining the ransom money quantity might differ depending on particular neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software.

    In specific locations, the Trojans typically wrongfully report having discovered some unlicensed applications enabled on the target’s gadget. The sharp then demands the user to pay the ransom.

    Faulty statements concerning illegal content.

    In countries where software application piracy is much less popular, this approach is not as efficient for the cyber frauds. Alternatively, the Ransom:Win32/Gandcrab popup alert might wrongly claim to be originating from a police establishment as well as will report having located child porn or various other unlawful information on the tool.

    Ransom:Win32/Gandcrab popup alert might incorrectly declare to be obtaining from a regulation enforcement organization and also will report having situated kid pornography or various other prohibited data on the tool. The alert will in a similar way consist of a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 6F78E799
md5: 95f0c7ecc32d2092c3aa752e3818a7b5
name: 95F0C7ECC32D2092C3AA752E3818A7B5.mlw
sha1: d76c6761d9891c195962df7d586def85b7ee9fb0
sha256: 493ac3f7cda6762cc2f47e2818cfdcfd88ca7007602c54712ab06de56e8a9a20
sha512: 3983c71ab5d58d73d9331bdd0acd5b7f8c98d7181dbc4c5a6a9480890320e857eb34e7f2f02d2338d3f53e57c050ff610853ee3adc03f16719db0ddbc3c6d10c
ssdeep: 98304:UZJE1MsNOkvXOI7lQ01Z4h/zxCui0/hvRY9j3F39Kb2KC70VMimhfDC2zCgbKXM:s4M61ehzhvRYllJ6ERDxzpvhEdyAkVj
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

InternalSurname: vebug.ekc
Prod: 1.2.4
FileVersions: 1.0.6.9
LegalCo: Copyri (C) 2019, pirmudationco

Ransom:Win32/Gandcrab also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.45474119
FireEye Generic.mg.95f0c7ecc32d2092
McAfee Artemis!95F0C7ECC32D
Cylance Unsafe
VIPRE Win32.Malware!Drop
Sangfor Malware
BitDefender Trojan.GenericKD.45474119
K7GW Trojan ( 005763681 )
Cyren W32/Trojan.ESVA-3692
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast FileRepMalware
Kaspersky Trojan.Win32.AntiAV.czmc
Rising Trojan.Kryptik!8.8 (TFE:5:c4Dvue7LbZD)
Ad-Aware Trojan.GenericKD.45474119
Sophos Mal/Generic-S
F-Secure Trojan.TR/AD.GoCloudnet.qwxqp
DrWeb Trojan.Siggen11.58430
TrendMicro HackTool.Win32.ARTEMIS.USMANAF21
McAfee-GW-Edition BehavesLike.Win32.RansomGandCrab.rc
Emsisoft Trojan.GenericKD.45474119 (B)
Ikarus Trojan.SuspectCRC
Webroot W32.Trojan.D3
Avira TR/AD.GoCloudnet.qwxqp
MAX malware (ai score=91)
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/Gandcrab
Gridinsoft Trojan.Win32.Packed.oa
Arcabit Trojan.Generic.D2B5E147
ZoneAlarm Trojan.Win32.AntiAV.czmc
GData Trojan.GenericKD.45474119
Cynet Malicious (score: 100)
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34760.@pGfamzovepI
ALYac Trojan.GenericKD.45474119
VBA32 BScope.Trojan.Azorult
Malwarebytes Trojan.MalPack.GS
Panda Trj/RnkBend.A
ESET-NOD32 a variant of Generik.IHSFQIJ
TrendMicro-HouseCall HackTool.Win32.ARTEMIS.USMANAF21
SentinelOne Static AI – Suspicious PE
Fortinet W32/Kryptik.GWXD!tr
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)

How to remove Ransom:Win32/Gandcrab 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Ransom:Win32/Gandcrab 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:

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If the guide doesn’t help you to remove Ransom:Win32/Gandcrab 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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