TrojanDownloader:Win32/Nymaim Virus Removal

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

Seeing the TrojanDownloader:Win32/Nymaim detection usually means that your PC is in big danger. This computer virus can correctly be named as ransomware – type of malware which encrypts your files and asks you to pay for their decryption. Removing it requires some peculiar steps that must be done as soon as possible.

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TrojanDownloader:Win32/Nymaim detection is a virus detection you can spectate in your computer. It usually appears after the preliminary procedures on your computer – opening the untrustworthy e-mail, clicking the advertisement in the Web or setting up the program from dubious resources. From the second it appears, you have a short time to take action before it begins its harmful activity. And be sure – it is far better not to await these malicious things.

What is TrojanDownloader:Win32/Nymaim virus?

TrojanDownloader:Win32/Nymaim is ransomware-type malware. It searches for the files on your disk, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files locked, this malware also does a lot of harm to your system. It alters the networking setups in order to prevent you from checking out the removal articles or downloading the antivirus. In rare cases, TrojanDownloader:Win32/Nymaim can additionally prevent the setup of anti-malware programs.

TrojanDownloader:Win32/Nymaim Summary

Summarizingly, TrojanDownloader:Win32/Nymaim ransomware actions in the infected system are next:

  • A file was accessed within the Public folder.;
  • Authenticode signature is invalid;
  • Ciphering the documents kept on the victim’s drives — so the victim cannot open these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a horror story for the last 4 years. It is challenging to imagine a more harmful virus for both individual users and businesses. The algorithms utilized in TrojanDownloader:Win32/Nymaim (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have a lot more time than our galaxy currently exists, and possibly will exist. But that virus does not do all these terrible things instantly – it may take up to a few hours to cipher all of your documents. Thus, seeing the TrojanDownloader:Win32/Nymaim detection is a clear signal that you must begin the clearing process.

Where did I get the TrojanDownloader:Win32/Nymaim?

Typical ways of TrojanDownloader:Win32/Nymaim distribution are usual for all other ransomware variants. Those are one-day landing sites where victims are offered to download and install the free program, so-called bait emails and hacktools. Bait emails are a relatively modern method in malware distribution – you receive the email that mimics some normal notifications about shippings or bank service conditions modifications. Inside of the email, there is an infected MS Office file, or a web link which leads to the exploit landing site.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Avoiding it looks pretty uncomplicated, however, still needs a lot of attention. Malware can hide in various spots, and it is far better to prevent it even before it invades your PC than to rely upon an anti-malware program. General cybersecurity knowledge is just an important thing in the modern world, even if your interaction with a computer stays on YouTube videos. That can keep you a lot of time and money which you would spend while seeking a solution.

TrojanDownloader:Win32/Nymaim malware technical details

File Info:

name: 47BD2478FEB9CB0C08F7.mlw
path: /opt/CAPEv2/storage/binaries/c58d987be377e4fa3d512a21fdb522bd894b8d91536330a9abebbb461fd093b7
crc32: 6E8307B7
md5: 47bd2478feb9cb0c08f7e716c94cc8c8
sha1: 4fa3891e1b1ecf58eef0c88973d12a278d28feb5
sha256: c58d987be377e4fa3d512a21fdb522bd894b8d91536330a9abebbb461fd093b7
sha512: 2494f5d9582766028fb833b7aecfd0ed9a848df8f5685d8ce7d84c0c59de4323f85bd7e85e8de3b66772b216ad74d07d75b1f550c7cd1b627c46da706ef88de4
ssdeep: 12288:dKd0NFyfLNJfqK1f2lZ5Fefs1lWv0c4s85qboKbc91:dKCN0LNJfale01lW+scqs/91
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T195E4F102A623E036FED660B09B05C7705BB45EF76A2D4167B3F05F6EBB143C21A29359
sha3_384: c489083a7ed1e8aea05be175f38efb22751f388ba5d7a28b25bf1fdcca211766b54edcf17b9262c9166fa115d9f468dc
ep_bytes: e86a670000e978feffffcccccccccccc
timestamp: 2016-04-06 14:58:13

Version Info:

0: [No Data]

TrojanDownloader:Win32/Nymaim also known as:

Bkav W32.Common.C1729788
Lionic Trojan.Win32.Nymaim.4!c
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
FireEye Generic.mg.47bd2478feb9cb0c
CAT-QuickHeal Trojan.Mauvaise.SL1
Skyhigh BehavesLike.Win32.Dropper.jh
McAfee Generic.ys
Cylance unsafe
Zillya Trojan.Kryptik.Win32.873852
Sangfor Downloader.Win32.Nymaim.Vhya
K7AntiVirus Trojan ( 004e26601 )
Alibaba TrojanDownloader:Win32/Nymaim.f0a3a0ab
K7GW Trojan ( 004e26601 )
BitDefenderTheta Gen:NN.ZexaF.36744.OqW@aqievTai
VirIT Trojan.Win32.Generic.ARFK
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 Win32/TrojanDownloader.Nymaim.BA
APEX Malicious
ClamAV BC.Win.Packer.Troll-14
Kaspersky Trojan.Win32.Agent.iiyd
BitDefender Trojan.GenericKD.3143975
NANO-Antivirus Trojan.Win32.Kryptik.eopolq
MicroWorld-eScan Trojan.GenericKD.3143975
Avast Win32:Malware-gen
Tencent Malware.Win32.Gencirc.10b449ac
Emsisoft Trojan.GenericKD.3143975 (B)
F-Secure Trojan.TR/Kryptik.982065
VIPRE Trojan.GenericKD.3143975
TrendMicro TROJ_NYMAIM.BK
Sophos Mal/Kryptik-DC
Ikarus Trojan-Downloader.Win32.Nymaim
GData Win32.Trojan.Agent.PHAGCG
Jiangmin Trojan.Agent.aaid
Webroot W32.Trojan.Gen
Varist W32/Trojan.GWJF-1656
Avira TR/Kryptik.982065
Antiy-AVL Trojan/Win32.BTSGeneric
Kingsoft malware.kb.a.867
Xcitium Malware@#3852bsejszy9u
Arcabit Trojan.Generic.D2FF927
ViRobot Trojan.Win32.Z.Kryptik.657920.C
ZoneAlarm Trojan.Win32.Agent.iiyd
Microsoft TrojanDownloader:Win32/Nymaim
Google Detected
AhnLab-V3 Trojan/Win32.Dridex.C1370361
VBA32 BScope.TrojanRansom.Foreign
ALYac Trojan.GenericKD.3143975
MAX malware (ai score=94)
Malwarebytes Generic.Malware/Suspicious
Panda Trj/WLT.B
Zoner Trojan.Win32.41364
TrendMicro-HouseCall TROJ_NYMAIM.BK
Rising Downloader.Nymaim!8.781 (TFE:5:HFuCV9GTtEM)
Yandex Trojan.Agent!zvUREtgmxN0
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.1728101.susgen
Fortinet W32/Kryptik.DYTU!tr
AVG Win32:Malware-gen
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove TrojanDownloader:Win32/Nymaim?

TrojanDownloader:Win32/Nymaim malware is very difficult to remove manually. It puts its documents in several locations throughout the disk, and can get back itself from one of the parts. Moreover, a range of modifications in the registry, networking settings and Group Policies are pretty hard to identify and change to the original. It is far better to use a specific app – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the best for virus elimination goals.

Remove TrojanDownloader:Win32/Nymaim with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Trojans as shown from our tests with the software, and we assure you that it can remove TrojanDownloader:Win32/Nymaim as well as other malware hiding on your computer.

Gridinsoft Anti-Malware - Main Screen

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.

setup-gridinsoft-fix.exe

3.Follow the installation setup wizard's instructions diligently.

Gridinsoft Setup Wizard

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Scan for TrojanDownloader:Win32/Nymaim Trojans

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

The TrojanDownloader:Win32/Nymaim was Found

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

The TrojanDownloader:Win32/Nymaim has been removed

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “TrojanDownloader:Win32/Nymaim” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

Trojan Killer - Main View

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.

Download Trojan Killer

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

Install Trojan Killer to Removable Drive

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Click Update Button

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Searching TrojanDownloader:Win32/Nymaim Virus

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

Searching TrojanDownloader:Win32/Nymaim Finished

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Restart needed

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing TrojanDownloader:Win32/Nymaim and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

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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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