NSIS/Injector.TB

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

What is NSIS/Injector.TB infection?

In this short article you will certainly find regarding the interpretation of NSIS/Injector.TB as well as its unfavorable impact on your computer. Such ransomware are a form of malware that is elaborated by online scams to demand paying the ransom money by a victim.

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In the majority of the instances, NSIS/Injector.TB infection will instruct its victims to launch funds move for the purpose of neutralizing the amendments that the Trojan infection has introduced to the victim’s gadget.

NSIS/Injector.TB 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.
  • Compression (or decompression);
  • 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.

  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the sufferer’s hard disk — so the target can no more use the information;
  • Preventing regular 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.

NSIS/Injector.TB

One of the most regular networks where NSIS/Injector.TB Trojans are infused are:

  • By ways of phishing emails;
  • As a repercussion of user ending up on a source that hosts a destructive software application;

As quickly as the Trojan is effectively injected, it will either cipher the data on the target’s computer or prevent the tool from operating in a correct manner – while likewise positioning a ransom note that discusses the need for the targets to impact the repayment for the objective of decrypting the files or bring back the file system back to the first condition. In most circumstances, the ransom money note will certainly turn up when the customer reboots the PC after the system has currently been harmed.

NSIS/Injector.TB distribution channels.

In numerous edges of the world, NSIS/Injector.TB grows by jumps and also bounds. However, the ransom money notes as well as techniques of extorting the ransom money quantity may vary relying on certain local (regional) setups. The ransom notes and techniques of extorting the ransom amount might differ depending on certain neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software.

    In certain areas, the Trojans commonly wrongfully report having actually found some unlicensed applications allowed on the sufferer’s gadget. The alert after that requires the customer to pay the ransom.

    Faulty statements concerning prohibited web content.

    In nations where software piracy is much less preferred, this technique is not as efficient for the cyber scams. Conversely, the NSIS/Injector.TB popup alert may wrongly declare to be originating from a police establishment and also will certainly report having situated youngster pornography or other prohibited data on the gadget.

    NSIS/Injector.TB popup alert may wrongly claim to be deriving from a law enforcement organization as well as will report having situated youngster porn or various other prohibited data on the tool. The alert will likewise include a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: ABF7AD6E
md5: 1f179e81908674c821630217f02dcf1a
name: 1F179E81908674C821630217F02DCF1A.mlw
sha1: 44d4fca0300d5ef200bf6e37f0850e312c287807
sha256: 886171fb02b888cecd2253bc9b8cf89dbd13056b0e1162a69356be359dd10836
sha512: 3cdd4e36e58a7cb09a0c46e5bea1517b83c9d7bbec04abf13dcc7f18b73169520aadb2acb020cdd28281ad585f391d761928f211632485fa09f1bfddaf5eba2f
ssdeep: 12288:Pa7ullRYKGKl9haYeY3iCwFGTmpQc5im77bFKbfwtaqyyLHr3gQ4DP6OC0HXTSdq:6ull9G4OYncEm7/kqaqyeDVKC040u3E7
type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

0: [No Data]

NSIS/Injector.TB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005041161 )
CrowdStrike win/malicious_confidence_60% (D)
BitDefender Trojan.GenericKD.4295860
K7GW Trojan ( 005041161 )
Cybereason malicious.190867
Symantec Ransom.Troldesh
ESET-NOD32 NSIS/Injector.TB
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
Kaspersky Trojan-Ransom.Win32.Shade.loe
NANO-Antivirus Trojan.Nsis.Shade.elltsq
MicroWorld-eScan Trojan.GenericKD.4295860
Tencent Win32.Trojan.Shade.Dzal
Ad-Aware Trojan.GenericKD.4295860
Sophos Mal/Generic-S + Mal/Cerber-AA
DrWeb Trojan.Encoder.7111
McAfee-GW-Edition BehavesLike.Win32.ObfusRansom.cc
FireEye Generic.mg.1f179e81908674c8
Emsisoft Trojan.GenericKD.4295860 (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Malware.Gen
Avira HEUR/AGEN.1102531
Kingsoft Win32.Troj.Undef.(kcloud)
AhnLab-V3 Trojan/Win32.Cerber.R194529
VBA32 Trojan-Ransom.Shade
MAX malware (ai score=87)
Ikarus Trojan.SuspectCRC
Fortinet W32/Injector.TD!tr
Qihoo-360 Win32/Ransom.Shade.HyoDEpsA

How to remove NSIS/Injector.TB virus?

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 NSIS/Injector.TB 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 NSIS/Injector.TB 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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