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

What is Behavior:Win32/Nitol!A infection?

In this post you will certainly find regarding the meaning of Behavior:Win32/Nitol!A and also its adverse influence on your computer. Such ransomware are a type of malware that is specified by online scams to require paying the ransom by a target.

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Most of the instances, Behavior:Win32/Nitol!A ransomware will advise its targets to launch funds move for the objective of counteracting the changes that the Trojan infection has introduced to the target’s device.

Behavior:Win32/Nitol!A 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.

  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • Detects VirtualBox through the presence of a library;
  • 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!
  • Detects VirtualBox through the presence of a file;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Connects to Tor Hidden Services through a Tor gateway;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the victim’s hard disk drive — so the victim can no longer make use of the information;
  • Preventing regular access 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.
Similar behavior
Related domains Trojan.Ransom.Crypton Trojan.Ransom.Crypton Trojan.Ransom.Crypton Trojan.Ransom.Crypton


One of the most normal channels through which Behavior:Win32/Nitol!A Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As an effect of user ending up on a source that holds a destructive software program;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the victim’s computer or protect against the tool from working in a proper fashion – while likewise positioning a ransom note that discusses the requirement for the sufferers to effect the payment for the objective of decrypting the files or restoring the data system back to the preliminary problem. In a lot of instances, the ransom money note will turn up when the customer reboots the PC after the system has actually currently been damaged.

Behavior:Win32/Nitol!A circulation channels.

In various corners of the globe, Behavior:Win32/Nitol!A expands by leaps and also bounds. Nonetheless, the ransom notes and also tricks of extorting the ransom money amount may vary relying on certain local (regional) setups. The ransom money notes and techniques of extorting the ransom amount may vary depending on specific neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having spotted some unlicensed applications made it possible for on the target’s device. The alert then requires the customer to pay the ransom money.

    Faulty statements about illegal material.

    In countries where software program piracy is much less preferred, this method is not as effective for the cyber scams. Additionally, the Behavior:Win32/Nitol!A popup alert may falsely assert to be originating from a police institution as well as will certainly report having situated youngster porn or various other illegal information on the tool.

    Behavior:Win32/Nitol!A popup alert might falsely claim to be deriving from a regulation enforcement institution and also will report having situated youngster pornography or various other unlawful data on the device. The alert will similarly consist of a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: F2DE9747
md5: dbb1b9094a259539800cda4cf81b706a
name: DBB1B9094A259539800CDA4CF81B706A.mlw
sha1: 1a1043a0077b827321ae29b1ef4badeb5191a1e5
sha256: de044073c8c0d6f6302654aa297dac80103ab9fb9459f1b6dad5330f73f3394d
sha512: cc00cc5047dd133f8d3cd5a9c6561681193fdb1de10f26c9ffc76770696958d41471f4f47ea9211db24992ab22b0cc791f639a1e69a0bc4b08d5ca4b1b210fc9
ssdeep: 6144:exw+e1yy3EqFYrdjler/jDsJ2QR4P8fshjoU9VQ3m:iw38Mcjler3A2QR4HuU8m
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: (C) 2007
InternalName: ImageSegment
FileVersion: 1, 0, 0, 1
ProductName: ImageSegment
ProductVersion: 1, 0, 0, 1
FileDescription: ImageSegment
OriginalFilename: ImageSegment.EXE
Translation: 0x040b 0x04e4

Behavior:Win32/Nitol!A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Zusy.225236
ALYac Trojan.Ransom.Crypton
Cylance Unsafe
VIPRE Trojan.Win32.Injector.cdgy (v)
Sangfor Malware
K7AntiVirus Trojan ( 005072d21 )
Alibaba Trojan:Win32/Generic.f073dc59
K7GW Trojan ( 005072d21 )
Cybereason malicious.94a259
Cyren W32/S-04ec011e!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Zusy.225236
NANO-Antivirus Trojan.Win32.Shade.elzumf
Rising Malware.Obscure/Heur!1.9E03 (CLOUD)
Ad-Aware Gen:Variant.Zusy.225236
Sophos Mal/Generic-R + Troj/Ransom-EHQ
Comodo Malware@#3b8yz5w0u9pe1
DrWeb BackDoor.Siggen2.1946
Zillya Dropper.FrauDrop.Win32.38880
TrendMicro Ransom_CERBER.JVN
McAfee-GW-Edition GenericRXDJ-ZX!DBB1B9094A25
Emsisoft Gen:Variant.Zusy.225236 (B)
Ikarus Trojan.SuspectCRC
Jiangmin Backdoor.Androm.nqu
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1125171
MAX malware (ai score=100)
Antiy-AVL Trojan/Win32.Inject
Microsoft Behavior:Win32/Nitol.gen!A
SUPERAntiSpyware Ransom.CryptoLocker/Variant
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Zusy.225236
AhnLab-V3 Trojan/Win32.MDA.R196138
McAfee GenericRXDJ-ZX!DBB1B9094A25
VBA32 SScope.Malware-Cryptor.Hlux
Malwarebytes Trojan.Xcsidl
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Injector.DMAP
TrendMicro-HouseCall Ransom_CERBER.JVN
Tencent Malware.Win32.Gencirc.10bbc959
Yandex Trojan.GenAsa!WovQO8gU360
SentinelOne Static AI – Malicious PE
eGambit Generic.Malware
Fortinet W32/TorrentLocker.A!tr
BitDefenderTheta Gen:NN.ZexaF.34804.oq0@aabi8Jlb
AVG Win32:Malware-gen
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Trojan.Generic

How to remove Behavior:Win32/Nitol!A 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 Behavior:Win32/Nitol!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 Behavior:Win32/Nitol!A you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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