Ransom:Win32/GandCrab.AH!bit

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

What is Ransom:Win32/GandCrab.AH!bit infection?

In this post you will discover about the definition of Ransom:Win32/GandCrab.AH!bit as well as its adverse effect on your computer system. Such ransomware are a kind of malware that is clarified by on the internet fraudulences to require paying the ransom by a sufferer.

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In the majority of the instances, Ransom:Win32/GandCrab.AH!bit infection will instruct its sufferers to initiate funds move for the function of neutralizing the changes that the Trojan infection has actually introduced to the target’s device.

Ransom:Win32/GandCrab.AH!bit Summary

These modifications 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.
  • 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;
  • Unconventionial language used in binary resources: Czech;
  • 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 records located on the sufferer’s hard disk — so the sufferer can no more utilize the information;
  • Preventing regular accessibility to the sufferer’s workstation;
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.AH!bit

The most normal networks through which Ransom:Win32/GandCrab.AH!bit Ransomware are infused are:

  • By methods of phishing emails;
  • As an effect of individual winding up on a source that organizes a harmful software;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the victim’s computer or protect against the device from operating in a correct fashion – while additionally positioning a ransom money note that points out the demand for the victims to effect the repayment for the function of decrypting the papers or recovering the file system back to the initial condition. In the majority of instances, the ransom money note will come up when the client reboots the PC after the system has currently been harmed.

Ransom:Win32/GandCrab.AH!bit distribution channels.

In numerous edges of the world, Ransom:Win32/GandCrab.AH!bit expands by jumps and also bounds. Nonetheless, the ransom notes and also tricks of extorting the ransom money amount might differ relying on particular neighborhood (local) setups. The ransom money notes and also methods of extorting the ransom amount may differ depending on certain regional (local) setups.

Ransomware injection

For instance:

    Faulty signals about unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having actually found some unlicensed applications made it possible for on the victim’s device. The sharp then requires the individual to pay the ransom.

    Faulty statements regarding illegal content.

    In nations where software piracy is less prominent, this method is not as efficient for the cyber frauds. Additionally, the Ransom:Win32/GandCrab.AH!bit popup alert may falsely declare to be stemming from a law enforcement organization as well as will report having located kid porn or various other prohibited information on the gadget.

    Ransom:Win32/GandCrab.AH!bit popup alert might falsely declare to be acquiring from a regulation enforcement organization and also will report having located child porn or other illegal information on the gadget. The alert will in a similar way consist of a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 567432B8
md5: 698c34c362168534787739fd4785353f
name: 698C34C362168534787739FD4785353F.mlw
sha1: 401ade03dd3e540f975e29e5fb3ee23155a04651
sha256: 4da7ed05d14fba970c4ae242104fc60ecec22741000e88756c1d341528055fac
sha512: e5e5d54c0cc739301d31967b321e28ec1dcf2b5850b667112b3381991efe01f817343f75c67750b52ccb146d46cdd91d4683bdb52d39f4dd2439bff92b9a8c49
ssdeep: 3072:ae5Ef9dh3OXY9zf/EQOpvLjQZakcXX0tkYQL2uyHtfzlr61mVWAumw5m1sFGcD:Ydy6upzjTkR5QanNBGgWAumwrDD
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0809 0x04b0

Ransom:Win32/GandCrab.AH!bit 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.698c34c362168534
CAT-QuickHeal Trojan.Chapak.ZZ5
McAfee GenericRXFT-QC!698C34C36216
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 00533f8d1 )
BitDefender Trojan.Ransom.GandCrab.Gen.2
K7GW Trojan ( 00533f8d1 )
Cybereason malicious.362168
Cyren W32/S-468a6143!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Avast FileRepMalware
ClamAV Win.Packer.Crypter-6539596-1
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/GandCrab.85ae0423
NANO-Antivirus Trojan.Win32.Kryptik.fdvifr
ViRobot Trojan.Win32.GandCrab.Gen.A
AegisLab Trojan.Win32.Generic.4!c
Rising Malware.Obscure/Heur!1.9E03 (CLOUD)
Ad-Aware Trojan.Ransom.GandCrab.Gen.2
Emsisoft Trojan.Ransom.GandCrab.Gen.2 (B)
Comodo TrojWare.Win32.Chapak.FB@7ou98h
F-Secure Heuristic.HEUR/AGEN.1103298
DrWeb Trojan.Encoder.24384
Zillya Trojan.Chapak.Win32.5536
TrendMicro Ransom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
Sophos Mal/Generic-R + Mal/Agent-AUL
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Agent.bior
eGambit Unsafe.AI_Score_99%
Avira HEUR/AGEN.1103298
MAX malware (ai score=100)
Antiy-AVL Trojan/Win32.AGeneric
Microsoft Ransom:Win32/GandCrab.AH!bit
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.qyX@amtB8jeG
ALYac Trojan.Ransom.GandCrab.Gen.2
TACHYON Ransom/W32.GandCrab
VBA32 Trojan.Encoder
Malwarebytes Trojan.MalPack.GS
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.GHPL
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMLA.hp
Tencent Malware.Win32.Gencirc.10b9d009
Yandex Trojan.GenAsa!1pq3jlYcuAI
Ikarus Trojan-Ransom.GandCrab
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.HCLG!tr
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.2c9

How to remove Ransom:Win32/GandCrab.AH!bit virus?

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.AH!bit 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 Ransom:Win32/GandCrab.AH!bit 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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