Win32/Small.NNZ

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

What is Win32/Small.NNZ infection?

In this short article you will certainly locate concerning the definition of Win32/Small.NNZ and its unfavorable influence on your computer system. Such ransomware are a form of malware that is clarified by online frauds to require paying the ransom by a victim.

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Most of the instances, Win32/Small.NNZ infection will instruct its victims to initiate funds move for the objective of counteracting the modifications that the Trojan infection has introduced to the victim’s tool.

Win32/Small.NNZ Summary

These alterations can be as follows:

  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • 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 slightly modified copy of itself;
  • Ciphering the files located on the sufferer’s disk drive — so the sufferer can no more utilize the data;
  • Preventing routine access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32/Small.NNZ

One of the most common channels where Win32/Small.NNZ Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of customer winding up on a source that holds a malicious software application;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the victim’s computer or stop the tool from functioning in a correct way – while likewise putting a ransom note that discusses the need for the victims to effect the payment for the purpose of decrypting the files or restoring the file system back to the initial condition. In most circumstances, the ransom note will certainly turn up when the customer reboots the COMPUTER after the system has actually currently been damaged.

Win32/Small.NNZ circulation networks.

In numerous corners of the globe, Win32/Small.NNZ expands by jumps and bounds. However, the ransom money notes as well as methods of obtaining the ransom money amount might differ depending on particular local (local) setups. The ransom notes and also techniques of obtaining the ransom money quantity may differ depending on certain neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having actually spotted some unlicensed applications enabled on the victim’s gadget. The alert after that demands the user to pay the ransom.

    Faulty statements concerning illegal material.

    In countries where software piracy is much less popular, this technique is not as efficient for the cyber scams. Conversely, the Win32/Small.NNZ popup alert may falsely declare to be stemming from a police establishment and also will certainly report having located child porn or other prohibited data on the gadget.

    Win32/Small.NNZ popup alert may wrongly claim to be deriving from a legislation enforcement institution as well as will certainly report having situated youngster pornography or other illegal data on the tool. The alert will similarly have a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 3C123D00
md5: 093152ed073656c47d691caa408fb688
name: 093152ED073656C47D691CAA408FB688.mlw
sha1: 4ae60e74a3abd58165d4a0838e85e2ff699422fa
sha256: 26c258e3044d3ce719a6265b29d0a5ef8551290486d340dd583461a4466a8634
sha512: c18bdb8cff7e12207a366c5457627d68d5297854e1bfe95162bc26888966defb7a62a43a54f42bff3efb82fee54025549f9da5b6dba2686ee711ca01418ab186
ssdeep: 384:Q5ll5pr6HpSE4x3Cb1qm+vMS1q0t0yYbOEQn9X6ZCsmHAgSne:MHp60E4Cb1j0t0y0OdqclH7Ge
type: PE32 executable (console) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Win32/Small.NNZ also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
FireEyeTrojan.GenericKD.43732356
McAfeeArtemis!093152ED0736
CylanceUnsafe
AegisLabTrojan.Win32.Blocker.j!c
SangforRansom.Win32.Blocker.jwho
K7AntiVirusRiskware ( 0040eff71 )
BitDefenderTrojan.GenericKD.43732356
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.d07365
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
CynetMalicious (score: 90)
KasperskyTrojan-Ransom.Win32.Blocker.jwho
AlibabaRansom:Win32/Blocker.d51727e9
NANO-AntivirusTrojan.Win32.Blocker.elmrvw
MicroWorld-eScanTrojan.GenericKD.43732356
RisingRansom.Blocker!8.12A (CLOUD)
Ad-AwareTrojan.GenericKD.43732356
EmsisoftTrojan.GenericKD.43732356 (B)
F-SecureHeuristic.HEUR/Malware
ZillyaTrojan.Blocker.Win32.37388
McAfee-GW-EditionBehavesLike.Win32.Downloader.mm
SophosMal/Generic-S
IkarusTrojan.Blocker
AviraHEUR/Malware
MAXmalware (ai score=88)
MicrosoftTrojan:Win32/Dynamer!rfn
ArcabitTrojan.Generic.D29B4D84
AhnLab-V3Trojan/Win32.Blocker.C2306043
ZoneAlarmTrojan-Ransom.Win32.Blocker.jwho
GDataTrojan.GenericKD.43732356
ESET-NOD32a variant of Win32/Small.NNZ
VBA32suspected of Trojan.Downloader.gen.h
ALYacTrojan.GenericKD.43732356
TACHYONRansom/W32.Blocker.38141.B
MalwarebytesMalware.Heuristic.1003
PandaTrj/GdSda.A
TencentMalware.Win32.Gencirc.114b0b3c
YandexTrojan.GenAsa!2g3pLW7gZDo
SentinelOneStatic AI – Suspicious PE
FortinetW32/Blocker.JWHO!tr
BitDefenderThetaGen:NN.ZexaF.34608.bmIfaC6u8Yn
AVGWin32:Malware-gen
Qihoo-360Win32/Trojan.Ransom.0d3

How to remove Win32/Small.NNZ 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 Win32/Small.NNZ 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

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If the guide doesn’t help you to remove Win32/Small.NNZ 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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