Trojan:Win32/Gandcrab!rfn

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

What is Trojan:Win32/Gandcrab!rfn infection?

In this article you will discover regarding the meaning of Trojan:Win32/Gandcrab!rfn and its adverse impact on your computer. Such ransomware are a kind of malware that is elaborated by on the internet fraudulences to demand paying the ransom by a victim.

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Most of the situations, Trojan:Win32/Gandcrab!rfn virus will certainly advise its targets to initiate funds move for the objective of counteracting the changes that the Trojan infection has actually introduced to the victim’s device.

Trojan:Win32/Gandcrab!rfn 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;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • 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.
  • 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!
  • 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 files found on the target’s hard disk drive — so the victim can no more make use of the information;
  • Preventing regular access 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
lkmn.infoRansom/W32.GandCrab.180224.B

Trojan:Win32/Gandcrab!rfn

The most regular channels where Trojan:Win32/Gandcrab!rfn Ransomware Trojans are injected are:

  • By means of phishing e-mails;
  • As a consequence of user winding up on a source that hosts a destructive software application;

As quickly as the Trojan is effectively infused, it will either cipher the information on the victim’s PC or prevent the tool from functioning in an appropriate manner – while also placing a ransom note that discusses the requirement for the victims to effect the settlement for the function of decrypting the papers or restoring the data system back to the first condition. In a lot of circumstances, the ransom money note will turn up when the customer restarts the PC after the system has already been harmed.

Trojan:Win32/Gandcrab!rfn circulation networks.

In different edges of the globe, Trojan:Win32/Gandcrab!rfn expands by leaps and bounds. Nonetheless, the ransom money notes and tricks of obtaining the ransom money amount may differ relying on particular local (local) settings. The ransom money notes and also tricks of extorting the ransom amount may vary depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software.

    In certain locations, the Trojans often wrongfully report having actually detected some unlicensed applications made it possible for on the target’s device. The sharp after that demands the individual to pay the ransom.

    Faulty declarations regarding illegal web content.

    In nations where software program piracy is less preferred, this method is not as reliable for the cyber scams. Alternatively, the Trojan:Win32/Gandcrab!rfn popup alert may falsely declare to be deriving from a law enforcement organization and also will certainly report having situated youngster pornography or other illegal information on the gadget.

    Trojan:Win32/Gandcrab!rfn popup alert might wrongly declare to be deriving from a regulation enforcement institution as well as will certainly report having located child pornography or other illegal information on the gadget. The alert will likewise consist of a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 2BAA27E8
md5: 853f8bfb286eb31777671166259c9b24
name: 853F8BFB286EB31777671166259C9B24.mlw
sha1: c30fa4ce1ba6f7ef8d179e9a31568b504d61636f
sha256: c24b243cf9aafdef221918403575abc3c6b3796177abeefc51844179ccbfd5c3
sha512: 9519a754e19a5e5b2189c1fb0dde739a570a6c54a74bb2703355f9f544ebb609941486a54b5c5a96b9fc015774be1618bfca023e7555864ee4382e1ae004d908
ssdeep: 3072:DnilM4sU+/DKZGDvTIrk6pFmy2PVatvBEGC6RjJmyoCP85WUSW:7iD+WwjT6k6pFH249Bv9jTUSW
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: ogtrddtgcssk.exe
FileVersion: 1.0.0.1
ProductVersion: 1.0.0.1
Translation: 0x0809 0x04b0

Trojan:Win32/Gandcrab!rfn also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 00516fdf1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Stealer.24814
CynetMalicious (score: 100)
ALYacTrojan.Brsecmon.1
CylanceUnsafe
ZillyaTrojan.Stealer.Win32.1334
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaTrojanSpy:Win32/Stealer.11b04e40
K7GWTrojan ( 00516fdf1 )
Cybereasonmalicious.b286eb
CyrenW32/Kryptik.MA.gen!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GLPU
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Spy.Win32.Stealer.auc
BitDefenderTrojan.Brsecmon.1
NANO-AntivirusTrojan.Win32.Chapak.fjaxtr
MicroWorld-eScanTrojan.Brsecmon.1
TencentWin32.Trojan-spy.Stealer.Dyqh
Ad-AwareTrojan.Brsecmon.1
SophosML/PE-A + Mal/GandCrab-G
ComodoTrojWare.Win32.Chapak.CA@7xwnmx
BitDefenderThetaGen:NN.ZexaF.34684.lu0@aK4ah3mO
VIPRETrojan.Win32.Generic!BT
TrendMicroTrojanSpy.Win32.CLIPBANKER.SMB
McAfee-GW-EditionBehavesLike.Win32.Generic.ch
FireEyeGeneric.mg.853f8bfb286eb317
EmsisoftTrojan.Brsecmon.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojanSpy.Stealer.gd
MicrosoftTrojan:Win32/Gandcrab!rfn
AegisLabTrojan.Win32.Stealer.4!c
GDataTrojan.Brsecmon.1
TACHYONRansom/W32.GandCrab.180224.B
AhnLab-V3Trojan/Win32.Gandcrab.R239238
Acronissuspicious
McAfeeTrojan-FPYT!853F8BFB286E
MAXmalware (ai score=100)
VBA32BScope.Trojan.Chapak
MalwarebytesMalware.AI.1678598579
PandaTrj/GdSda.A
TrendMicro-HouseCallTrojanSpy.Win32.CLIPBANKER.SMB
RisingSpyware.Stealer!8.3090 (CLOUD)
YandexTrojan.GenAsa!jiWExoJgWvo
IkarusTrojan.Win32.Ranumbot
FortinetW32/GenKryptik.CPYR!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove Trojan:Win32/Gandcrab!rfn ransomware?

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

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 Trojan:Win32/Gandcrab!rfn 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 Trojan:Win32/Gandcrab!rfn 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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