Backdoor.BitRAT

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

What is Backdoor.BitRAT infection?

In this article you will find regarding the meaning of Backdoor.BitRAT and its negative effect on your computer. Such ransomware are a type of malware that is elaborated by on the internet scams to require paying the ransom by a sufferer.

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In the majority of the instances, Backdoor.BitRAT infection will advise its targets to launch funds transfer for the function of neutralizing the modifications that the Trojan infection has presented to the target’s tool.

Backdoor.BitRAT Summary

These modifications 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.
  • Presents an Authenticode digital signature;
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Sniffs keystrokes;
  • Installs an hook procedure to monitor for mouse events;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • Creates a 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 target’s hard drive — so the sufferer can no more use the data;
  • Preventing regular accessibility to the sufferer’s workstation;

Backdoor.BitRAT

The most regular channels whereby Backdoor.BitRAT Trojans are infused are:

  • By means of phishing e-mails;
  • As a consequence of individual winding up on a resource that holds a destructive software;

As soon as the Trojan is effectively infused, it will either cipher the information on the target’s PC or prevent the tool from functioning in an appropriate way – while additionally placing a ransom note that points out the demand for the sufferers to impact the repayment for the function of decrypting the papers or bring back the data system back to the first condition. In most circumstances, the ransom note will certainly turn up when the customer restarts the PC after the system has already been damaged.

Backdoor.BitRAT distribution networks.

In numerous corners of the world, Backdoor.BitRAT expands by leaps and also bounds. However, the ransom notes and also tricks of extorting the ransom money quantity might vary depending on particular neighborhood (local) setups. The ransom money notes as well as tricks of obtaining the ransom money quantity may differ depending on specific local (regional) settings.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software program.

    In certain locations, the Trojans typically wrongfully report having detected some unlicensed applications made it possible for on the victim’s tool. The sharp then requires the customer to pay the ransom money.

    Faulty statements concerning illegal content.

    In nations where software program piracy is less preferred, this approach is not as reliable for the cyber frauds. Additionally, the Backdoor.BitRAT popup alert may wrongly assert to be originating from a law enforcement organization and will certainly report having located kid pornography or various other unlawful information on the gadget.

    Backdoor.BitRAT popup alert may wrongly assert to be acquiring from a legislation enforcement institution and will report having located kid porn or other unlawful information on the gadget. The alert will likewise include a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: A4873547
md5: 52245de0b67a49befe656dec74b9344f
name: 52245DE0B67A49BEFE656DEC74B9344F.mlw
sha1: 1443306efc49c4820770fe0cde36c4ca68fdeda2
sha256: 6a28f7fb457fb484c1fbcceb41b10637345b18950b62df89c0a7689dd4f20d68
sha512: c81e6fe0393036e0e66a24190ccbb5a217bcbdf9ece8da9deb1120da87bc801a80692ff8bd788b765ce21e1a477fba23e4a11a4384da762b31bed99fa15b71f6
ssdeep: 98304:PVZWhDELQh4pAJ/mS3YN8HgIsYCXJtH6zpj2euVljJsPWW:PVZyNJ+isYCXz+YVl1GB
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2021 voidtools
InternalName: Everythings
FileVersion: 1.4.1.2
CompanyName: voidstools
ProductName: Everythings
ProductVersion: 1.4.1.2
FileDescription: Everything
OriginalFilename: Everythings.exe
Translation: 0x0409 0x04b0

Backdoor.BitRAT also known as:

GridinSoftTrojan.Ransom.Gen
CynetMalicious (score: 85)
ALYacBackdoor.Agent.BitRAT
MalwarebytesBackdoor.BitRAT
VIPRETrojan.Win32.Generic!BT
BitDefenderTrojan.GenericKD.36481153
K7GWTrojan ( 00569d2a1 )
ArcabitTrojan.Generic.D22CA881
CyrenW32/Trojan.SKBZ-0189
ESET-NOD32Win32/Agent.ACBZ
Paloaltogeneric.ml
AlibabaTrojan:Win32/Redcap.d8a7bf41
MicroWorld-eScanTrojan.GenericKD.36481153
RisingRansom.Crowti!8.37D (C64:YzY0Olx5mUwl9Sgw)
Ad-AwareTrojan.GenericKD.36481153
EmsisoftMalCert.A (A)
ComodoMalware@#2udfhiw0f18v3
F-SecureTrojan.TR/Redcap.psylu
DrWebTrojan.Inject4.8489
TrendMicroTROJ_FRS.VSNTCA21
McAfee-GW-EditionArtemis!Trojan
FireEyeGeneric.mg.52245de0b67a49be
SophosMal/Generic-S
AviraTR/Redcap.psylu
KingsoftWin32.Troj.Generic.a.(kcloud)
MicrosoftTrojan:Win32/TopAntiSpyware!rfn
ViRobotTrojan.Win32.Z.Bitrat.3600360
GDataWin32.Backdoor.BitRAT.3F9IEK
McAfeeArtemis!52245DE0B67A
MAXmalware (ai score=84)
TrendMicro-HouseCallTROJ_FRS.VSNTCA21
IkarusTrojan.SuspectCRC
FortinetW32/Generik.SDMLDW!tr
WebrootW32.Malware.Gen
AVGWin32:DangerousSig [Trj]
AvastWin32:DangerousSig [Trj]
Qihoo-360Win32/Trojan.Generic.HgIASQgA

How to remove Backdoor.BitRAT 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 Backdoor.BitRAT 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 Backdoor.BitRAT 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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