Backdoor.NJRat

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

What is Backdoor.NJRat infection?

In this article you will certainly locate concerning the interpretation of Backdoor.NJRat and its negative effect on your computer system. Such ransomware are a form of malware that is elaborated by online fraudulences to demand paying the ransom by a target.

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In the majority of the cases, Backdoor.NJRat ransomware will certainly instruct its targets to start funds transfer for the function of counteracting the amendments that the Trojan infection has actually presented to the target’s device.

Backdoor.NJRat Summary

These adjustments can be as complies with:

  • 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.
  • 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.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • 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;
  • Ciphering the papers located on the sufferer’s hard drive — 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.
Similar behavior
Related domains
z.whorecord.xyzRansom.Generic!8.E315 (TFE:dGZlOg13gg7WTw3zVg)
a.tomx.xyzRansom.Generic!8.E315 (TFE:dGZlOg13gg7WTw3zVg)
server5319.us.toRansom.Generic!8.E315 (TFE:dGZlOg13gg7WTw3zVg)

Backdoor.NJRat

One of the most normal networks where Backdoor.NJRat are injected are:

  • By methods of phishing emails;
  • As a consequence of individual winding up on a source that holds a harmful software application;

As quickly as the Trojan is effectively injected, it will either cipher the information on the target’s PC or protect against the tool from functioning in a proper manner – while also putting a ransom note that discusses the need for the victims to effect the settlement for the objective of decrypting the papers or restoring the data system back to the initial problem. In many instances, the ransom money note will certainly come up when the customer reboots the PC after the system has actually currently been harmed.

Backdoor.NJRat distribution channels.

In different edges of the world, Backdoor.NJRat grows by leaps as well as bounds. However, the ransom money notes and also techniques of extorting the ransom money quantity may differ depending upon particular local (local) settings. The ransom money notes as well as tricks of extorting the ransom money amount might differ depending on specific local (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having actually detected some unlicensed applications allowed on the victim’s device. The alert after that demands the user to pay the ransom money.

    Faulty statements about prohibited web content.

    In countries where software program piracy is much less preferred, this method is not as reliable for the cyber fraudulences. Alternatively, the Backdoor.NJRat popup alert may incorrectly declare to be originating from a police organization and also will report having situated kid pornography or other illegal data on the device.

    Backdoor.NJRat popup alert may wrongly assert to be obtaining from a law enforcement institution and also will certainly report having situated youngster pornography or various other prohibited information on the gadget. The alert will similarly contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 57C74DB3
md5: 60758f07373b0fe2a278d589bcc3faca
name: cesco.jpg
sha1: 7985fed61f51f0ee8893716e9c36639f71c544d9
sha256: 6de51ede209c0879f475526b0277b8cd6e9e39ccaf5ed3a92c84f33f7c9a4c52
sha512: 53d9c9059a7c954debd6e01b461dda5703ac594d4803cbf5809f60577fbf9d844a4921b66ed5597c60006b78d3724c6fbd01eed26fc8e88504bb990c11c2ca1d
ssdeep: 384:MLlzrjDsCc9kLaLrpbqBtzpWOsgQ2eBrXSPxi2VQjyvSskLDOHYCFXPzlpmIMxT:KlzrjDszkLaug2xpVG/mF7C71B
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright:
Assembly Version: 0.0.0.0
InternalName: k.exe
FileVersion: 0.0.0.0
ProductVersion: 0.0.0.0
FileDescription:
OriginalFilename: k.exe

Backdoor.NJRat also known as:

GridinSoftTrojan.Ransom.Gen
DrWebTrojan.DownLoader25.10174
MicroWorld-eScanGeneric.MSIL.Bladabindi.8F1777AC
CAT-QuickHealTrojan.GenericFC.S6059376
McAfeeTrojan-FIGN
CylanceUnsafe
VIPREBackdoor.MSIL.Bladabindi.a (v)
AegisLabTrojan.Win32.Generic.lWjm
SangforMalware
K7AntiVirusTrojan ( 004b99501 )
BitDefenderGeneric.MSIL.Bladabindi.8F1777AC
K7GWTrojan ( 004b99501 )
Cybereasonmalicious.7373b0
ArcabitGeneric.MSIL.Bladabindi.8F1777AC
Invinceaheuristic
BitDefenderThetaGen:NN.ZemsilF.34098.cm0@aiO2PHc
CyrenW32/MSIL_Agent.CP.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Autorun.Agent.LW
TrendMicro-HouseCallBKDR_BLADABI.SMC
AvastMSIL:Agent-CIB [Trj]
ClamAVWin.Trojan.B-468
KasperskyHEUR:Trojan.Win32.Generic
AlibabaBackdoor:MSIL/Bladabindi.bf63d822
NANO-AntivirusTrojan.Win32.Autorun.gkchaz
TencentMsil.Worm.Autorun.Wmiv
Ad-AwareGeneric.MSIL.Bladabindi.8F1777AC
EmsisoftGeneric.MSIL.Bladabindi.8F1777AC (B)
ComodoBackdoor.MSIL.Bladabindi.BSS@7pzdvl
F-SecureTrojan.TR/ATRAPS.Gen
BaiduMSIL.Backdoor.Bladabindi.a
ZillyaWorm.Bladabindi.Win32.7954
TrendMicroBKDR_BLADABI.SMC
McAfee-GW-EditionBehavesLike.Win32.Trojan.nm
FortinetMSIL/Agent.LI!tr
Trapminemalicious.moderate.ml.score
FireEyeGeneric.mg.60758f07373b0fe2
SophosMal/Bladabi-T
IkarusTrojan-Spy.HawkEye
F-ProtW32/MSIL_Agent.CP.gen!Eldorado
JiangminTrojanSpy.Agent.aaxh
MAXmalware (ai score=85)
Antiy-AVLTrojan[Backdoor]/MSIL.Bladabindi
Endgamemalicious (high confidence)
MicrosoftBackdoor:MSIL/Bladabindi.BO
SUPERAntiSpywareBackdoor.NJRat/Variant
ZoneAlarmHEUR:Trojan.Win32.Generic
AhnLab-V3Win-Trojan/NjRAT01.Exp
Acronissuspicious
VBA32Trojan.Downloader
ALYacTrojan.MSIL.Bladabindi
MalwarebytesBackdoor.NJRat
PandaTrj/GdSda.A
APEXMalicious
RisingRansom.Generic!8.E315 (TFE:dGZlOg13gg7WTw3zVg)
YandexTrojan.Agent!lxq7yBx2J0w
SentinelOneDFI – Malicious PE
eGambitUnsafe.AI_Score_99%
GDataMSIL.Backdoor.Bladabindi.AV
MaxSecureTrojan.Malware.7164915.susgen
AVGMSIL:Agent-CIB [Trj]
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360Win32/Trojan.b1d

How to remove Backdoor.NJRat 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

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.

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.NJRat 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 Backdoor.NJRat 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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