Written by Robert Bailey

What is Win32/TrojanDropper.Small.NNP infection?

In this article you will discover about the definition of Win32/TrojanDropper.Small.NNP as well as its adverse impact on your computer system. Such ransomware are a kind of malware that is clarified by on-line frauds to require paying the ransom by a target.

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In the majority of the instances, Win32/TrojanDropper.Small.NNP ransomware will certainly advise its targets to initiate funds transfer for the function of neutralizing the changes that the Trojan infection has actually introduced to the target’s device.

Win32/TrojanDropper.Small.NNP Summary

These modifications can be as complies with:

  • Executable code extraction;
  • Creates RWX memory;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Installs itself for autorun at Windows startup;
  • Network activity detected but not expressed in API logs;
  • Detects VirtualBox through the presence of a registry key;
  • Anomalous binary characteristics;
  • Ciphering the documents situated on the victim’s disk drive — so the sufferer can no longer use the information;
  • Preventing normal accessibility to the victim’s workstation;


The most normal channels through which Win32/TrojanDropper.Small.NNP Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that organizes a harmful software;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or prevent the tool from functioning in an appropriate fashion – while likewise placing a ransom money note that points out the requirement for the sufferers to effect the repayment for the purpose of decrypting the records or bring back the file system back to the initial condition. In the majority of circumstances, the ransom note will show up when the client reboots the PC after the system has currently been damaged.

Win32/TrojanDropper.Small.NNP distribution networks.

In numerous corners of the world, Win32/TrojanDropper.Small.NNP expands by leaps as well as bounds. Nevertheless, the ransom money notes and techniques of obtaining the ransom money amount may vary relying on certain local (regional) settings. The ransom notes as well as methods of obtaining the ransom quantity might vary depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the victim’s device. The sharp then requires the customer to pay the ransom money.

    Faulty declarations concerning unlawful material.

    In countries where software piracy is much less prominent, this method is not as efficient for the cyber fraudulences. Conversely, the Win32/TrojanDropper.Small.NNP popup alert might incorrectly claim to be deriving from a police institution and also will certainly report having located youngster porn or other unlawful information on the device.

    Win32/TrojanDropper.Small.NNP popup alert may wrongly declare to be acquiring from a law enforcement establishment as well as will report having located child pornography or various other illegal information on the tool. The alert will likewise contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: BA5B8D65
md5: 98a98f5e967097a51c7db01aa6f5cb1c
name: 98A98F5E967097A51C7DB01AA6F5CB1C.mlw
sha1: 3460ee1d9dd659706a38a928158e32735c0ff71b
sha256: d963ce59839ad076db17f65e163d25cac116d452f6d7284fde028113f4c18b7b
sha512: 7668df8d40025ccce0befaeb7e3f25ae072e2989bd3f68ed30d2d284ee51ca8edd41c3e1932284c6520c19b5d5fbd1f82ffb0e788bbd01fa03092fbdffa71a3f
ssdeep: 12288:ao3OOSZ4Z6YBKEE/18e/dEX/iaY+J63GSV3RVhrUtjDn28aiy23eLqmZpC2pEtjH:x3OOSu9S/KeyXba3RBr18DDQvGmur
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/TrojanDropper.Small.NNP also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Lionic Hacktool.Win32.Black.lAAL
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Qqgame.59
McAfee GenericR-FRZ!98A98F5E9670
Cylance Unsafe
Zillya Dropper.Small.Win32.12833
Sangfor Suspicious.Win32.Save.a
Alibaba TrojanDropper:Win32/QQPass.3d9b9109
K7GW Trojan ( f10005021 )
K7AntiVirus Trojan ( f10005021 )
ESET-NOD32 a variant of Win32/TrojanDropper.Small.NNP
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Generic.Delf.PWStealer.4.2C87E535
NANO-Antivirus Trojan.Win32.Qqgame.ffywiq
Tencent Trojan.Win32.PngBank.thq
Sophos Mal/Generic-S
Comodo Malware@#2nzxpfc143x82
BitDefenderTheta Gen:NN.ZexaF.34170.WmZ@aG1bTspb
VIPRE LooksLike.Win32.Malware.i (v)
Emsisoft Gen:Variant.Doina.21602 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Variant.Kazy.cwh
Avira KIT/QQPass.HB.4
Microsoft Trojan:Win32/Occamy.C
Arcabit Trojan.Doina.D5462
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Generic.Delf.PWStealer.4.2C87E535
AhnLab-V3 Trojan/Win32.Genome.R71594
Acronis suspicious
VBA32 Trojan.Dropik
Malwarebytes PolyRansom.Virus.FileInfector.DDS
Panda Trj/Genetic.gen
Rising Malware.FakePIC/ICON!1.6AB7 (CLASSIC)
Yandex Trojan.DR.Small!5Q7E6Q4ACaM
Ikarus Trojan-Dropper.Win32.Small
Fortinet W32/Small.NNP!tr
AVG Win32:Malware-gen

How to remove Win32/TrojanDropper.Small.NNP virus?

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 Win32/TrojanDropper.Small.NNP 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 Win32/TrojanDropper.Small.NNP 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

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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