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

What is Trojan:Win32/Ninunarch.A infection?

In this article you will certainly discover concerning the meaning of Trojan:Win32/Ninunarch.A and also its unfavorable effect on your computer. Such ransomware are a kind of malware that is clarified by on the internet frauds to require paying the ransom money by a sufferer.

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Most of the situations, Trojan:Win32/Ninunarch.A infection will certainly instruct its victims to launch funds move for the function of counteracting the modifications that the Trojan infection has actually presented to the victim’s tool.

Trojan:Win32/Ninunarch.A Summary

These adjustments can be as adheres to:

  • 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.
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the victim’s hard drive — so the sufferer can no longer use the data;
  • Preventing regular accessibility to the sufferer’s workstation;


One of the most common channels through which Trojan:Win32/Ninunarch.A Ransomware are injected are:

  • By methods of phishing emails;
  • As a repercussion of user ending up on a resource that hosts a harmful software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or avoid the gadget from functioning in an appropriate way – while likewise placing a ransom money note that states the demand for the victims to impact the settlement for the function of decrypting the papers or bring back the documents system back to the preliminary problem. In a lot of circumstances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has actually currently been harmed.

Trojan:Win32/Ninunarch.A distribution channels.

In various edges of the world, Trojan:Win32/Ninunarch.A grows by jumps and also bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom money quantity might vary relying on specific local (regional) settings. The ransom notes as well as techniques of extorting the ransom money amount might differ depending on specific neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software program.

    In certain locations, the Trojans typically wrongfully report having actually identified some unlicensed applications made it possible for on the target’s gadget. The alert after that demands the customer to pay the ransom money.

    Faulty statements about prohibited web content.

    In countries where software piracy is much less preferred, this method is not as reliable for the cyber fraudulences. Conversely, the Trojan:Win32/Ninunarch.A popup alert might falsely assert to be deriving from a police establishment and will certainly report having located child pornography or other illegal information on the tool.

    Trojan:Win32/Ninunarch.A popup alert may falsely declare to be obtaining from a regulation enforcement institution as well as will report having located youngster pornography or other prohibited data on the device. The alert will in a similar way consist of a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 97D5FCB5
md5: 0e01cfa67f8170b2e15cf1be684e2712
name: 0E01CFA67F8170B2E15CF1BE684E2712.mlw
sha1: 8591d0d145667952a47b8f9d92432b1d9816643f
sha256: b25b3018d1dd417fc12c5e4f06e420bf6ee811e0c95a9d83303a3a1a4e4bd49b
sha512: 7a7f99701a9d39150d41e8b957f3e6e27ffe8be4c83065923981b031665a0d0dbe25d3e8f60362ba89416077fd860f0435085fd4656e51181604823c707dbbcc
ssdeep: 24576:0eRQT2IWbCrKOIfNsazTVkvOVNOHyyCyyyML+xqp:0eRQypYmsalgTyyCyyyML+cp
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ninunarch.A also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus JokeProgram ( 002384951 )
Elastic malicious (high confidence)
DrWeb Trojan.SMSSend.620
Cynet Malicious (score: 100)
ALYac Gen:Variant.Adware.SMSHoax.14
Cylance Unsafe
Zillya Tool.ArchSMS.Win32.2183
Sangfor Trojan.Win32.Save.a
Alibaba Trojan:Win32/Ninunarch.bd85ef6f
K7GW JokeProgram ( 002384951 )
Cybereason malicious.67f817
Cyren W32/SMShoax.E.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Hoax.ArchSMS.JZ
APEX Malicious
Avast Win32:SMSSend-AL [Trj]
ClamAV Win.Dropper.60b73a0c-9776868-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Adware.SMSHoax.14
NANO-Antivirus Trojan.Win32.SMSSend.cxdhyk
MicroWorld-eScan Gen:Variant.Adware.SMSHoax.14
Tencent Win32.Trojan-psw.Archsms.Fhx
Ad-Aware Gen:Variant.Adware.SMSHoax.14
Sophos Mal/Generic-S
Comodo Malware@#2y4ctw9rrkos1
BitDefenderTheta Gen:NN.ZexaF.34722.iHW@ayJedmhc
VIPRE Trojan.Win32.Generic.pak!cobra
TrendMicro TROJ_GEN.R002C0DE621
Emsisoft Gen:Variant.Adware.SMSHoax.14 (B)
Jiangmin Hoax.ArchSMS.pv
Webroot W32.Ransom.Gen
Avira TR/Fraud.Gen2
Antiy-AVL Trojan/Generic.ASMalwS.13F51C
Kingsoft Win32.Heur.KVM011.a.(kcloud)
Microsoft Trojan:Win32/Ninunarch.A
Arcabit Trojan.Adware.SMSHoax.14
AegisLab Hacktool.Win32.ArchSMS.3!c
ZoneAlarm HEUR:Hoax.Win32.ArchSMS.gen
GData Gen:Variant.Adware.SMSHoax.14
TACHYON Trojan-Clicker/W32.SMSHoax.1192960
AhnLab-V3 Trojan/Win32.ArchSMS.R77937
McAfee SMSFraud.e
MAX malware (ai score=100)
VBA32 Hoax.ArchSMS.hv
Malwarebytes Malware.AI.3221527184
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_GEN.R002C0DE621
Rising [email protected] (RDMK:WlKAjx63FywWG4tQEs3xJQ)
Ikarus Hoax.Win32.ArchSMS
MaxSecure Trojan.Malware.300983.susgen
Fortinet Riskware/ArchSMS
AVG Win32:SMSSend-AL [Trj]

How to remove Trojan:Win32/Ninunarch.A 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.

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Press “Install” button.

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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 Trojan:Win32/Ninunarch.A 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 Trojan:Win32/Ninunarch.A you can always ask me in the comments for getting help.

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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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