What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the MSIL/LockScreen.YO detection usually means that your PC is in big danger. This malware can correctly be named as ransomware – virus which ciphers your files and asks you to pay for their decryption. Removing it requires some specific steps that must be taken as soon as possible.
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MSIL/LockScreen.YO detection is a virus detection you can spectate in your computer. It usually shows up after the provoking activities on your computer – opening the suspicious e-mail, clicking the banner in the Internet or mounting the program from untrustworthy resources. From the instance it appears, you have a short time to do something about it before it starts its destructive activity. And be sure – it is far better not to await these destructive effects.

What is MSIL/LockScreen.YO virus?

MSIL/LockScreen.YO is ransomware-type malware. It searches for the files on your disk drives, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this virus additionally does a ton of harm to your system. It alters the networking setups in order to prevent you from checking out the elimination tutorials or downloading the antivirus. In some cases, MSIL/LockScreen.YO can additionally prevent the setup of anti-malware programs.

MSIL/LockScreen.YO Summary

In total, MSIL/LockScreen.YO virus activities in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • Sample contains Overlay data;
  • Creates RWX memory;
  • Guard pages use detected – possible anti-debugging.;
  • A process attempted to delay the analysis task.;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • Unconventionial language used in binary resources: Russian;
  • Authenticode signature is invalid;
  • Installs itself for autorun at Windows startup;
  • Encrypting the documents kept on the target’s disk drives — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a horror story for the last 4 years. It is hard to realize a more dangerous malware for both individual users and businesses. The algorithms utilized in MSIL/LockScreen.YO (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 malware does not do all these terrible things instantly – it can require up to a few hours to cipher all of your documents. Therefore, seeing the MSIL/LockScreen.YO detection is a clear signal that you have to start the clearing procedure.

Where did I get the MSIL/LockScreen.YO?

Routine ways of MSIL/LockScreen.YO distribution are standard for all other ransomware variants. Those are one-day landing sites where victims are offered to download and install the free software, so-called bait emails and hacktools. Bait e-mails are a quite modern strategy in malware distribution – you receive the e-mail that mimics some normal notifications about deliveries or bank service conditions shifts. Within the email, there is an infected 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.

Avoiding it looks quite simple, however, still demands tons of attention. Malware can hide in different spots, and it is better to stop it even before it gets into your system than to depend on an anti-malware program. Common cybersecurity knowledge is just an essential item in the modern-day world, even if your interaction with a computer stays on YouTube videos. That can keep you a great deal of time and money which you would certainly spend while searching for a solution.

MSIL/LockScreen.YO malware technical details

File Info:

name: 36419D62824B6E547C97.mlw
path: /opt/CAPEv2/storage/binaries/349508bdc31aa72e48eaf47543c0f007126df7e2691a22d2d37ac70e1cd00c62
crc32: 4B0B8443
md5: 36419d62824b6e547c978cca76e4c00c
sha1: 64b7a1a79bbe14463ac43e74add7c293c7c9ec5a
sha256: 349508bdc31aa72e48eaf47543c0f007126df7e2691a22d2d37ac70e1cd00c62
sha512: 48bf6ba22e145a6a51b1b8de09e4773578c86e94c753c990f0addc24e5259a523d8dc6079741cf8c4dd2225bdad5fae95e4a60964b225493ed0d59a84c3415cc
ssdeep: 12288:VUomEFRu3xEPEIdWlEw7aAGd3OpABNIezf2FIK/nxIre:zmOMSPEIdWpG5uezuyK/xGe
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T15EA4012270C1C072D507A2B089988B62B5B4BE340366584AFF993F6D7F356F2EB19747
sha3_384: 796c28ff7bd9b0ed432d9897dc57f8eb2a29b0dec7678108acc168e4381b55a04422010b11a8252415fd2b736449d1ba
ep_bytes: e85d640000e978feffff8bff558bec56
timestamp: 2014-06-10 17:11:07

Version Info:

0: [No Data]

MSIL/LockScreen.YO also known as:

K7AntiVirusTrojan ( 005334e41 )
K7GWTrojan ( 005334e41 )
RisingTrojan.Generic/MSIL@AI.90 (RDM.MSIL:NV2UWEnFbmcLo7AjfAabRA)
EmsisoftTrojan.GenericKD.32070868 (B)
MAXmalware (ai score=94)
CynetMalicious (score: 100)
SentinelOneStatic AI – Malicious SFX
CrowdStrikewin/malicious_confidence_100% (W)

How to remove MSIL/LockScreen.YO?

MSIL/LockScreen.YO malware is very hard to erase by hand. It places its files in several locations throughout the disk, and can get back itself from one of the elements. Moreover, a lot of alterations in the registry, networking setups and Group Policies are really hard to identify and change to the original. It is much better to utilize a special app – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the most ideal for malware elimination purposes.

Why GridinSoft Anti-Malware? It is very light-weight and has its detection databases updated nearly every hour. Moreover, it does not have such problems and vulnerabilities as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware ideal for removing 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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