What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Win32/Small.NMO malware detection means that your system is in big danger. This malware can correctly be named as ransomware – type of malware which encrypts your files and forces you to pay for their decryption. Removing it requires some unusual steps that must be done as soon as possible.
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Win32/Small.NMO detection is a virus detection you can spectate in your computer. It generally shows up after the preliminary procedures on your PC – opening the suspicious e-mail messages, clicking the banner in the Web or mounting the program from unreliable resources. From the second it appears, you have a short time to act before it begins its malicious activity. And be sure – it is far better not to await these destructive things.

What is Win32/Small.NMO virus?

Win32/Small.NMO is ransomware-type malware. It searches for the documents on your disks, encrypts it, and then asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this virus also does a lot of harm to your system. It modifies the networking settings in order to prevent you from checking out the removal articles or downloading the anti-malware program. In rare cases, Win32/Small.NMO can also prevent the setup of anti-malware programs.

Win32/Small.NMO Summary

In total, Win32/Small.NMO virus actions in the infected computer are next:

  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Authenticode signature is invalid;
  • Attempts to modify proxy settings;
  • Anomalous binary characteristics;
  • Encrypting the documents located on the target’s disks — 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 headache for the last 4 years. It is hard to realize a more hazardous virus for both individual users and organizations. The algorithms used in Win32/Small.NMO (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy currently exists, and possibly will exist. However, that virus does not do all these horrible things without delay – it can take up to several hours to cipher all of your documents. Thus, seeing the Win32/Small.NMO detection is a clear signal that you must begin the elimination process.

Where did I get the Win32/Small.NMO?

Ordinary methods of Win32/Small.NMO distribution are typical for all other ransomware variants. Those are one-day landing sites where users are offered to download and install the free software, so-called bait e-mails and hacktools. Bait emails are a quite modern tactic in malware distribution – you get the email that imitates some routine notifications about shippings or bank service conditions shifts. Within the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing page.

Malicious email spam

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

Preventing it looks pretty easy, but still needs a lot of awareness. Malware can hide in different places, and it is better to prevent it even before it invades your PC than to rely upon an anti-malware program. Simple cybersecurity knowledge is just an essential item in the modern world, even if your interaction with a PC remains on YouTube videos. That can save you a lot of time and money which you would certainly spend while seeking a fixing guide.

Win32/Small.NMO malware technical details

File Info:

name: 85A8E3404E8B727646CB.mlw
path: /opt/CAPEv2/storage/binaries/922aed79664efb62bd2b95d93ccdcf19f85ab49d18bab747037217deb950f0f0
crc32: 3A094C42
md5: 85a8e3404e8b727646cb77ff8a372a54
sha1: a4b8d9d166c9aa94e139dbc124fce0c6cc6dbd9a
sha256: 922aed79664efb62bd2b95d93ccdcf19f85ab49d18bab747037217deb950f0f0
sha512: a7c99130e45c7d6116564f6e75295392dd4f90bcaa3c796ec53157a1a2b9e63099fdf9af520d498a6f36c713901ec323a4e4e060b1ae75d0d857b6e99956f146
ssdeep: 1536:TVlqdEIGbenpd14BOQ4OnY3kvIF/yuxUsyR6K:v6EIGbe4G6p2yKUbR6K
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T171936B1070C1C436F45A00B68896CBB64D3EBD310B65A6C7BBE417AA9B352F2DF29357
sha3_384: faf06ad278a2bd8cab49a5554f2cc7d264a259e61b8cc795a58e886c5c408deedb1b6ba9824ff1ad549b13e9f743bfae
ep_bytes: e8ad4e0000e978feffff5064ff350000
timestamp: 2015-05-12 07:15:18

Version Info:

0: [No Data]

Win32/Small.NMO also known as:

Elasticmalicious (high confidence)
K7AntiVirusRiskware ( 0040eff71 )
K7GWRiskware ( 0040eff71 )
ESET-NOD32a variant of Win32/Small.NMO
CynetMalicious (score: 100)
RisingBackdoor.Danti!8.2F46 (RDMK:cmRtazpUMrugeRjiD/MV9XGu1PCs)
SentinelOneStatic AI – Suspicious PE
CrowdStrikewin/malicious_confidence_90% (W)

How to remove Win32/Small.NMO?

Win32/Small.NMO malware is very hard to delete manually. It places its documents in multiple places throughout the disk, and can get back itself from one of the parts. Furthermore, a number of alterations in the windows registry, networking setups and Group Policies are pretty hard to find and revert to the original. It is better to utilize a specific tool – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for virus removal reasons.

Why GridinSoft Anti-Malware? It is very lightweight and has its detection databases updated almost every hour. Furthermore, it does not have such problems and weakness as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for taking out malware of any kind.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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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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