What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Win32/Expiro.NDO detection name usually means that your system is in big danger. This virus can correctly be identified as ransomware – virus which encrypts your files and asks you to pay for their decryption. Stopping it requires some unusual steps that must be done as soon as possible.
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Win32/Expiro.NDO detection is a virus detection you can spectate in your system. It usually appears after the provoking activities on your computer – opening the dubious e-mail, clicking the banner in the Internet or installing the program from unreliable 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 much better not to wait for these harmful things.

What is Win32/Expiro.NDO virus?

Win32/Expiro.NDO is ransomware-type malware. It looks for the documents on your disk drive, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware additionally does a ton of damage to your system. It modifies the networking setups in order to avoid you from looking for the elimination tutorials or downloading the anti-malware program. In some cases, Win32/Expiro.NDO can also stop the setup of anti-malware programs.

Win32/Expiro.NDO Summary

In summary, Win32/Expiro.NDO ransomware actions in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • At least one process apparently crashed during execution;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • A process attempted to delay the analysis task.;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Hungarian;
  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • Creates a hidden or system file;
  • Likely virus infection of existing system binary;
  • Attempts to bypass application whitelisting by executing .NET utility in a suspended state, potentially for injection;
  • CAPE detected the OnlyLogger malware family;
  • Attempts to modify proxy settings;
  • Encrypting the documents kept on the victim’s drive — so the victim cannot open these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a headache for the last 4 years. It is hard to imagine a more damaging malware for both individual users and organizations. The algorithms used in Win32/Expiro.NDO (typically, 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 actually exists, and possibly will exist. But that malware does not do all these horrible things instantly – it can require up to a few hours to cipher all of your documents. Hence, seeing the Win32/Expiro.NDO detection is a clear signal that you should start the clearing process.

Where did I get the Win32/Expiro.NDO?

General ways of Win32/Expiro.NDO distribution are standard for all other ransomware variants. Those are one-day landing websites where victims are offered to download the free software, so-called bait emails and hacktools. Bait e-mails are a relatively modern method in malware distribution – you receive the e-mail that simulates some regular notifications about shippings or bank service conditions modifications. Inside of the email, there is an infected MS Office file, or a link which opens the exploit landing page.

Malicious email spam

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

Preventing it looks quite uncomplicated, but still needs a lot of focus. Malware can hide in different places, and it is better to prevent it even before it gets into your system than to depend on an anti-malware program. Simple cybersecurity knowledge is just an important item in the modern world, even if your relationship with a PC remains on YouTube videos. That may save you a lot of time and money which you would certainly spend while searching for a solution.

Win32/Expiro.NDO malware technical details

File Info:

name: 114503254BA9C9198D08.mlw
path: /opt/CAPEv2/storage/binaries/1e63c700ced6302b0a5ce4ce22efabf64bb9c7a39378c60ea51fdcaef1580124
crc32: EF464ED5
md5: 114503254ba9c9198d08f951652be5e5
sha1: 284dcdd7a3c38875509e132dde26aa96f0311f8e
sha256: 1e63c700ced6302b0a5ce4ce22efabf64bb9c7a39378c60ea51fdcaef1580124
sha512: 17ced0ee18cbbe58994ff91b0ea51faa8dd0c0f801ba852dace8f2a9553526239ad758429eee73d6cf41c57fe591983098554261ec12d9f1d41e29433e58c030
ssdeep: 12288:wRe6abo2ZXc3ajG+hjQKymY8efKCpD7Gj9G6G1qT8nQkCu83L3Wl/np9DBDt3kbE:4UZsqjnhMgeiCl7G0nehbGZpbD
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T17F7522696784417BD4732AB941B9E71D5C2B3ED2AD348087BA1639BEFEB31C04E35213
sha3_384: 59994e3b7b87022191e86f5bbdda7c74be45016bc4785977913f841c9a555c514361ec4e39753fa532d48361a7db94ad
ep_bytes: e881280000e979feffff8bff558bec8b
timestamp: 2020-11-28 15:44:43

Version Info:

InternationalName: bomgvioci.iwa
Copyright: Copyrighz (C) 2021, fudkort
Translation: 0x0129 0x07bc

Win32/Expiro.NDO also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 0058c5711 )
K7GWTrojan ( 0058c5711 )
AvastWin32:CrypterX-gen [Trj]
SophosMal/Generic-S + Mal/Agent-AWV
EmsisoftGen:Variant.Babar.30049 (B)
MAXmalware (ai score=82)
CynetMalicious (score: 100)
RisingTrojan.Raccrypt!8.12B71 (CLOUD)
SentinelOneStatic AI – Malicious PE
AVGWin32:CrypterX-gen [Trj]
PandaGeneric Suspicious
CrowdStrikewin/malicious_confidence_90% (W)

How to remove Win32/Expiro.NDO?

Win32/Expiro.NDO malware is incredibly difficult to erase by hand. It stores its data in several locations throughout the disk, and can restore itself from one of the elements. Moreover, numerous alterations in the windows registry, networking setups and also Group Policies are quite hard to discover and return to the initial. It is better to make use of a specific tool – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the best for malware elimination reasons.

Why GridinSoft Anti-Malware? It is very light-weight and has its databases updated almost every hour. Moreover, it does not have such bugs and exposures as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for getting rid of malware of any type.

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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