Written by Robert Bailey

What is MSIL/LockScreen.AAR infection?

In this short article you will find about the interpretation of MSIL/LockScreen.AAR and its negative impact on your computer system. Such ransomware are a type of malware that is elaborated by on-line frauds to demand paying the ransom money by a victim.

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Most of the situations, MSIL/LockScreen.AAR ransomware will certainly instruct its victims to launch funds move for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the sufferer’s device.

MSIL/LockScreen.AAR Summary

These modifications can be as adheres to:

  • Network activity detected but not expressed in API logs;
  • Ciphering the papers found on the target’s hard disk drive — so the target can no more make use of the data;
  • Preventing normal access to the target’s workstation;


The most typical channels whereby MSIL/LockScreen.AAR Ransomware are infused are:

  • By means of phishing emails;
  • As an effect of individual ending up on a resource that holds a destructive software;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the target’s computer or avoid the gadget from functioning in a proper fashion – while also placing a ransom note that points out the requirement for the targets to effect the settlement for the function of decrypting the records or bring back the documents system back to the first problem. In many circumstances, the ransom money note will show up when the customer restarts the COMPUTER after the system has actually already been harmed.

MSIL/LockScreen.AAR distribution networks.

In numerous edges of the world, MSIL/LockScreen.AAR expands by jumps and also bounds. Nevertheless, the ransom notes as well as methods of extorting the ransom money amount might vary relying on certain local (local) settings. The ransom notes and also tricks of extorting the ransom money quantity may differ depending on particular regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software application.

    In certain areas, the Trojans typically wrongfully report having actually identified some unlicensed applications allowed on the victim’s gadget. The sharp then requires the customer to pay the ransom.

    Faulty declarations about unlawful content.

    In nations where software piracy is much less popular, this method is not as efficient for the cyber scams. Additionally, the MSIL/LockScreen.AAR popup alert might falsely declare to be originating from a police organization and will report having located kid porn or various other prohibited data on the gadget.

    MSIL/LockScreen.AAR popup alert might wrongly declare to be acquiring from a regulation enforcement establishment and will certainly report having located kid porn or various other illegal information on the device. The alert will similarly consist of a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 8EDC70CD
md5: 02225239f99b793f05816264511e5807
name: 02225239F99B793F05816264511E5807.mlw
sha1: 9935752c0795873020efe43ae7eff9da5f9b286b
sha256: dbf704a3093f172363a77054cfda08cd187ea0779fd85ce5d7d187289260400f
sha512: 1f9e91397b6e6faf77f882cea15deda7c4f42ab78149572bcceb6746a59d7891dbeb1641c7a52a5f9d5fde2774f55e6dac38872ccebabcf4b4baeaeaecd6ef00
ssdeep: 768:ABMd52wYY5tkAhvGUJXmtTJsZOduovGPznsagwYY5tkAhvGUJXmtTJsZ:ABMT2etk2OUwTslyGPLsagetk2OUwTs
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 Microsoft 2015
Assembly Version:
InternalName: x5f3ax5236x6253x5f00x5bf9x65b9x89c6x9891x5de5x5177V3.51.exe
CompanyName: Microsoft
LegalTrademarks: Windows x670dx52a1x4e3bx8fdbx7a0b
Comments: svchost.exe
ProductName: svchost
FileDescription: Windows x670dx52a1x4e3bx8fdbx7a0b
OriginalFilename: x5f3ax5236x6253x5f00x5bf9x65b9x89c6x9891x5de5x5177V3.51.exe

MSIL/LockScreen.AAR also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0053fc0f1 )
Lionic Trojan.Win32.Generic.4!c
ALYac Gen:Heur.MSIL.Krypt.!cdmip!.2
Cylance Unsafe
Sangfor Trojan.Win32.Generic.8
Alibaba Trojan:MSIL/LockScreen.dedbb5b8
K7GW Trojan ( 0053fc0f1 )
Cybereason malicious.9f99b7
Symantec Trojan.Ransomlock.G
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Heur.MSIL.Krypt.!cdmip!.2
NANO-Antivirus Trojan.Win32.LockScreen.iurbqi
MicroWorld-eScan Gen:Heur.MSIL.Krypt.!cdmip!.2
Tencent Win32.Trojan.Generic.Bnm
Ad-Aware Gen:Heur.MSIL.Krypt.!cdmip!.2
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZemsilF.34170.jm0@aO3D9jk
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis
FireEye Gen:Heur.MSIL.Krypt.!cdmip!.2
Emsisoft Gen:Heur.MSIL.Krypt.!cdmip!.2 (B)
SentinelOne Static AI – Suspicious PE
Avira TR/LockScreen.efijh
Antiy-AVL Trojan/Generic.ASMalwS.E2F44F
Microsoft Trojan:Win32/Tnega!ml
Arcabit Trojan.MSIL.Krypt.!cdmip!.2
GData Gen:Heur.MSIL.Krypt.!cdmip!.2
AhnLab-V3 ASD.Reputation.C819493
McAfee Artemis!02225239F99B
MAX malware (ai score=84)
Ikarus Trojan.MSIL.LockScreen
AVG Win32:Malware-gen

How to remove MSIL/LockScreen.AAR ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 MSIL/LockScreen.AAR 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove MSIL/LockScreen.AAR you can always ask me in the comments for getting help.

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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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