NSIS/Injector.FK

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

What is NSIS/Injector.FK infection?

In this short article you will find concerning the meaning of NSIS/Injector.FK and also its adverse influence on your computer. Such ransomware are a type of malware that is specified by on-line frauds to demand paying the ransom by a victim.

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In the majority of the cases, NSIS/Injector.FK infection will certainly instruct its victims to launch funds move for the function of neutralizing the modifications that the Trojan infection has presented to the target’s gadget.

NSIS/Injector.FK Summary

These modifications 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.
  • A process attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • 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.

  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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!
  • Exhibits behavior characteristic of Cerber ransomware;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s disk drive — so the target can no longer utilize the information;
  • Preventing routine accessibility 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.

NSIS/Injector.FK

One of the most regular channels whereby NSIS/Injector.FK Ransomware are infused are:

  • By ways of phishing emails;
  • As a consequence of customer ending up on a source that hosts a destructive software;

As quickly as the Trojan is successfully injected, it will either cipher the information on the target’s PC or avoid the device from functioning in a correct fashion – while also placing a ransom note that discusses the requirement for the sufferers to effect the repayment for the purpose of decrypting the files or restoring the data system back to the first condition. In the majority of instances, the ransom money note will certainly show up when the client restarts the PC after the system has actually currently been harmed.

NSIS/Injector.FK circulation channels.

In different corners of the world, NSIS/Injector.FK expands by jumps and also bounds. Nonetheless, the ransom money notes and also techniques of obtaining the ransom money amount might vary depending upon certain regional (local) setups. The ransom money notes as well as techniques of obtaining the ransom quantity may vary depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In specific areas, the Trojans typically wrongfully report having actually detected some unlicensed applications allowed on the victim’s device. The sharp then requires the individual to pay the ransom.

    Faulty declarations regarding unlawful content.

    In countries where software application piracy is much less prominent, this technique is not as effective for the cyber scams. Conversely, the NSIS/Injector.FK popup alert may incorrectly declare to be originating from a law enforcement institution and also will certainly report having situated kid porn or other illegal information on the tool.

    NSIS/Injector.FK popup alert might incorrectly assert to be acquiring from a law enforcement establishment and also will report having situated youngster pornography or various other illegal information on the gadget. The alert will in a similar way contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: C1930C96
md5: 2934a751019ac20912173b649f75b1e8
name: 2934A751019AC20912173B649F75B1E8.mlw
sha1: 67579b20e5ae9c86272044c5ec6c46fd533bbba8
sha256: f85b8b36619a173688eea135d1c08213adc53671536cc2bebc5481726c4f7b92
sha512: ec77f00f18114f1859d6c5d1f5df93d0264b28973a25a974a12e8ea6d5e52541957f376a099707f316cd544b0abc4097c1475cc9062b2ff4a531a4a700808717
ssdeep: 6144:yW+7+eMgt4isibns6PRVJ+V1UDtsT+r1zFgBEynAP:yR/t4iRRnm6Zz4ni
type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

0: [No Data]

NSIS/Injector.FK also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0055e4081 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4691
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Locky.A
ALYac Gen:Variant.Nemesis.66
Zillya Trojan.GenericKD.Win32.18433
Sangfor Trojan.Win32.Generic.ky
CrowdStrike win/malicious_confidence_100% (W)
K7GW Trojan ( 0055e4081 )
Cybereason malicious.1019ac
Symantec Packed.NSISPacker!g1
ESET-NOD32 NSIS/Injector.FK
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Nemesis.66
NANO-Antivirus Trojan.Dos.Code.egouyv
SUPERAntiSpyware Ransom.Locky/Variant
MicroWorld-eScan Gen:Variant.Nemesis.66
Tencent Win32.Trojan.Zerber.Hqlo
Sophos Mal/Generic-R + Mal/Cerber-I
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBERENC.SMNS4
McAfee-GW-Edition BehavesLike.Win32.ObfusRansom.dc
FireEye Generic.mg.2934a751019ac209
Emsisoft Gen:Variant.Nemesis.66 (B)
SentinelOne Static AI – Malicious PE
Avira TR/Dropper.Gen
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Cerber!rfn
Arcabit Trojan.Nemesis.66
GData Gen:Variant.Nemesis.66
AhnLab-V3 Trojan/Win32.Cerber.C1579875
McAfee Artemis!2934A751019A
MAX malware (ai score=84)
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_CERBERENC.SMNS4
Fortinet W32/Cerber.4C18!tr.ransom
AVG Win32:Trojan-gen

How to remove NSIS/Injector.FK ransomware?

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 NSIS/Injector.FK 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 NSIS/Injector.FK 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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