MSIL/LockScreen.AS

Written by Robert Bailey

What is MSIL/LockScreen.AS infection?

In this article you will discover about the definition of MSIL/LockScreen.AS as well as its negative impact on your computer. Such ransomware are a kind of malware that is clarified by online frauds to require paying the ransom money by a sufferer.

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Most of the cases, MSIL/LockScreen.AS virus will instruct its sufferers to start funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually presented to the target’s tool.

MSIL/LockScreen.AS Summary

These adjustments can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Ciphering the documents situated on the sufferer’s hard disk drive — so the sufferer can no more utilize the data;
  • Preventing regular accessibility to the sufferer’s workstation;

MSIL/LockScreen.AS

One of the most common networks through which MSIL/LockScreen.AS Trojans are injected are:

  • By means of phishing emails;
  • As an effect of individual winding up on a source that holds a harmful software program;

As quickly as the Trojan is effectively injected, it will either cipher the information on the sufferer’s PC or protect against the device from functioning in a correct way – while additionally placing a ransom money note that points out the demand for the sufferers to impact the settlement for the purpose of decrypting the documents or restoring the data system back to the first condition. In the majority of instances, the ransom note will turn up when the client reboots the COMPUTER after the system has actually already been harmed.

MSIL/LockScreen.AS circulation channels.

In different corners of the world, MSIL/LockScreen.AS grows by leaps and bounds. Nonetheless, the ransom notes as well as methods of extorting the ransom amount might vary depending on particular regional (regional) setups. The ransom money notes and also tricks of obtaining the ransom quantity might vary depending on certain local (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In certain locations, the Trojans often wrongfully report having actually discovered some unlicensed applications allowed on the sufferer’s tool. The sharp after that requires the user to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software application piracy is less prominent, this technique is not as efficient for the cyber fraudulences. Alternatively, the MSIL/LockScreen.AS popup alert may falsely claim to be stemming from a police establishment and also will report having located child pornography or other unlawful information on the device.

    MSIL/LockScreen.AS popup alert may wrongly assert to be obtaining from a law enforcement institution and also will report having located child pornography or other illegal information on the tool. The alert will likewise contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 13ED3899
md5: b895dbb52a13657e4487c403b75e01b0
name: B895DBB52A13657E4487C403B75E01B0.mlw
sha1: 93507a18a6d0088baf1272e56e2c8939a85cef02
sha256: 073a73d30a5dee18888bb31e3d5374881721d4555efbb72c0a4d89dc36a276de
sha512: 9ad2e53f96f3a672cb8c13471f88ef6baaa3ff0b3593b1cf97709405f34f914df552fc79f0f931aa406ba854c08796ae40acb0e5ec6e10f4e20770413bfd83b4
ssdeep: 6144:sJCw/btIqDFj1ZxlTU/tC6+Lv3T6n/ZxWxUajqFXuQQs6:KIgj1Fb/v3mn/mPjm+Zh
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 Microsoft 2012
Assembly Version: 1.0.0.0
InternalName: wlnew.exe
FileVersion: 1.0.0.0
CompanyName: Microsoft
ProductName: wlnew
ProductVersion: 1.0.0.0
FileDescription: wlnew
OriginalFilename: wlnew.exe

MSIL/LockScreen.AS also known as:

GridinSoft Trojan.Ransom.Gen
DrWeb Trojan.KillProc.19614
Cynet Malicious (score: 99)
ALYac Gen:Variant.MSILPerseus.217331
Cylance Unsafe
Zillya Trojan.Blocker.Win32.938
Sangfor Trojan.Win32.AGEN.1001302
CrowdStrike win/malicious_confidence_70% (D)
Alibaba Trojan:MSIL/LockScreen.e7340374
Cybereason malicious.52a136
Symantec ML.Attribute.HighConfidence
ESET-NOD32 MSIL/LockScreen.AS
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Trojan.Agent-6505564-0
BitDefender Gen:Variant.MSILPerseus.217331
MicroWorld-eScan Gen:Variant.MSILPerseus.217331
Tencent Win32.Trojan.Blocker.Pgwj
Ad-Aware Gen:Variant.MSILPerseus.217331
Sophos Mal/Generic-S
Comodo Malware@#wtfs6jr7mibs
BitDefenderTheta Gen:NN.ZemsilF.34692.um0@aefOIhb
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
FireEye Generic.mg.b895dbb52a13657e
Emsisoft Gen:Variant.MSILPerseus.217331 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Malware.Gen
Avira HEUR/AGEN.1100998
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Backdoor:Win32/Bladabindi!ml
AegisLab Trojan.Win32.Blocker.j!c
GData Gen:Variant.MSILPerseus.217331
AhnLab-V3 Trojan/Win32.Blocker.R44004
McAfee Artemis!B895DBB52A13
MAX malware (ai score=98)
Panda Generic Malware
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Virus.LockScreen
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Blocker.HVY!tr
AVG Win32:Trojan-gen
Paloalto generic.ml

How to remove MSIL/LockScreen.AS ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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.AS 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:

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Full version of GridinSoft Anti-Malware

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

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: http://gridinsoft.com/products/

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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