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

What is Generic.Ransom.GandCrab.F91D15AB infection?

In this article you will certainly locate concerning the definition of Generic.Ransom.GandCrab.F91D15AB and its unfavorable impact on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to demand paying the ransom by a sufferer.

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Most of the cases, Generic.Ransom.GandCrab.F91D15AB ransomware will certainly advise its victims to launch funds transfer for the purpose of counteracting the changes that the Trojan infection has actually introduced to the sufferer’s tool.

Generic.Ransom.GandCrab.F91D15AB 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.
  • Performs some HTTP requests;
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Ciphering the papers found on the sufferer’s hard disk drive — so the victim can no longer utilize the information;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
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The most common networks through which Generic.Ransom.GandCrab.F91D15AB 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 winding up on a source that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will either cipher the information on the sufferer’s PC or avoid the gadget from working in a correct manner – while additionally putting a ransom note that states the demand for the sufferers to effect the repayment for the purpose of decrypting the records or restoring the documents system back to the preliminary condition. In most circumstances, the ransom money note will come up when the client reboots the COMPUTER after the system has currently been damaged.

Generic.Ransom.GandCrab.F91D15AB circulation networks.

In different corners of the globe, Generic.Ransom.GandCrab.F91D15AB grows by leaps as well as bounds. Nonetheless, the ransom money notes and also methods of obtaining the ransom money amount may vary relying on specific local (regional) setups. The ransom money notes and techniques of obtaining the ransom quantity might differ depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software.

    In specific areas, the Trojans typically wrongfully report having detected some unlicensed applications made it possible for on the sufferer’s gadget. The alert then demands the customer to pay the ransom.

    Faulty declarations regarding illegal material.

    In countries where software application piracy is less popular, this technique is not as efficient for the cyber fraudulences. Alternatively, the Generic.Ransom.GandCrab.F91D15AB popup alert may incorrectly claim to be originating from a law enforcement institution and also will certainly report having situated child pornography or other illegal data on the device.

    Generic.Ransom.GandCrab.F91D15AB popup alert may incorrectly declare to be obtaining from a legislation enforcement organization and will certainly report having located kid porn or various other unlawful data on the gadget. The alert will in a similar way consist of a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: D4148469
md5: 1ba61d60da244f36776032f6094e641c
name: 1BA61D60DA244F36776032F6094E641C.mlw
sha1: 153e4b2536535ac68bb28ae787585aeef4f7e901
sha256: 5ec76b07fb272995aff71c6fec77fd0a8ab4032cb29c9ba5677bdbde6ca70bc2
sha512: 2fb88bb118fa16caae568088bc158fecb902f4ec756ab80b3ef2a68baf64b2348d2cea277a5982bafb9e7d0ed6bdca84999935e09870e1b5f46be29e8431cfce
ssdeep: 1536:TZZZZZZZZZZZZpXzzzzzzzzzzzzV9rXounV98hbHnAwfMqqU+2bbbAV2/S2Lkvd:jBounVyFHpfMqqDL2/Lkvd
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Generic.Ransom.GandCrab.F91D15AB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Generic.Ransom.GandCrab.F91D15AB
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Generic.Ransom.GandCrab.F91D15AB
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Win.Ransomware.Gandcrab-6667060-0
K7AntiVirus Trojan ( 0053d33d1 )
BitDefender Generic.Ransom.GandCrab.F91D15AB
K7GW Trojan ( 00526c7b1 )
Cybereason malicious.0da244
BitDefenderTheta Gen:NN.ZexaF.34590.eyW@aO66Ongi
Cyren W32/S-700f8b9d!Eldorado
Symantec Ransom.GandCrab!g4
ESET-NOD32 a variant of Win32/Filecoder.GandCrab.H
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
ClamAV Win.Ransomware.Gandcrab-6502432-0
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/GandCrab.8a818c10
NANO-Antivirus Trojan.Win32.Inject.eyyizx
AegisLab Trojan.Win32.GandCrypt.trhX
Tencent Malware.Win32.Gencirc.10b0b456
Ad-Aware Generic.Ransom.GandCrab.F91D15AB
Emsisoft Generic.Ransom.GandCrab.F91D15AB (B)
Comodo TrojWare.Win32.Ransom.GandCrab.B@7kn2ff
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.Encoder.31290
Zillya Trojan.Filecoder.Win32.7162
TrendMicro Ransom.Win32.GANDCRAB.SMIU
Sophos Mal/Generic-R + Troj/GandCrab-A
Ikarus Trojan-Ransom.GandCrab
Jiangmin Trojan.Generic.bzhzc
eGambit Trojan.Generic
Avira TR/Dropper.Gen
Antiy-AVL HackTool/Win32.Inject
Microsoft Ransom:Win32/Gandcrab
Arcabit Generic.Ransom.GandCrab.F91D15AB
SUPERAntiSpyware Ransom.GandCrab/Variant
AhnLab-V3 Trojan/Win32.FileCoder.R221681
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Win32.Trojan-Ransom.GandCrab.C
Cynet Malicious (score: 100)
Acronis suspicious
McAfee Ransom-Gandcrab!1BA61D60DA24
MAX malware (ai score=100)
VBA32 BScope.Trojan.Chapak
Malwarebytes Ransom.GandCrab
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMIU
Rising Ransom.GandCrab!1.B8D6 (CLASSIC)
Yandex Trojan.GenAsa!N5wkFSylebY
SentinelOne Static AI – Malicious PE
MaxSecure Trojan-Ransom.GandCrab.C
Fortinet W32/GandCrab.B!tr.ransom
AVG Win32:RansomX-gen [Ransom]
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Ransom.GandCrab.HxQBJ5wA

How to remove Generic.Ransom.GandCrab.F91D15AB 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 Generic.Ransom.GandCrab.F91D15AB 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Generic.Ransom.GandCrab.F91D15AB you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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