Ransom:MSIL/LockScreen.A

What is Ransom:MSIL/LockScreen.A infection?

In this article you will locate regarding the meaning of Ransom:MSIL/LockScreen.A and its adverse effect on your computer system. Such ransomware are a form of malware that is specified by online fraudulences to demand paying the ransom money by a sufferer.

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In the majority of the situations, Ransom:MSIL/LockScreen.A infection will instruct its victims to launch funds transfer for the function of reducing the effects of the modifications that the Trojan infection has presented to the victim’s tool.

Ransom:MSIL/LockScreen.A Summary

These modifications can be as complies with:

  • 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.
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Attempts to restart the guest VM;
  • Modifies boot configuration settings;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the target’s hard drive — so the sufferer can no longer use the information;
  • Preventing routine accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Ransom:MSIL/LockScreen.A

One of the most normal networks through which Ransom:MSIL/LockScreen.A Ransomware are injected are:

  • By ways of phishing emails;
  • As a repercussion of customer winding up on a source that organizes a harmful software application;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the victim’s PC or avoid the device from functioning in a proper manner – while additionally putting a ransom note that discusses the need for the victims to impact the settlement for the purpose of decrypting the files or recovering the file system back to the first condition. In the majority of circumstances, the ransom money note will come up when the customer reboots the PC after the system has actually currently been damaged.

Ransom:MSIL/LockScreen.A circulation networks.

In various edges of the globe, Ransom:MSIL/LockScreen.A expands by jumps and bounds. However, the ransom money notes and also techniques of extorting the ransom money quantity may differ relying on particular neighborhood (local) setups. The ransom notes as well as methods of obtaining the ransom money amount may differ depending on particular neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty signals concerning unlicensed software.

    In certain areas, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the victim’s gadget. The alert then requires the customer to pay the ransom money.

    Faulty declarations concerning prohibited content.

    In countries where software program piracy is much less prominent, this method is not as effective for the cyber frauds. Alternatively, the Ransom:MSIL/LockScreen.A popup alert may falsely declare to be stemming from a police establishment and also will certainly report having situated kid porn or other prohibited information on the gadget.

    Ransom:MSIL/LockScreen.A popup alert may falsely claim to be deriving from a legislation enforcement organization as well as will certainly report having situated kid porn or various other unlawful data on the tool. The alert will similarly contain a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 38F5125D
md5: f05624875161dfa750ee506b920928c3
name: F05624875161DFA750EE506B920928C3.mlw
sha1: a2fc4629f3a890d2e4a8d6de2cae3847f1042964
sha256: 8c556c9d9a138e0683fa25f6219e58689e6355ca3b9c4dbc879cbbd386190cb5
sha512: 184ba37020e1064da59c71ee19805c76b4c230f3570c6bcab149e1b95ee2849287c738a0af534862555d80eccf21d92c58f99208dc4a28a39c478f4066d02284
ssdeep: 1536:eqomKTB0OmjjR7YPTSQEM0LYbsulcU9tVqtf:eqdF8EMnbsU9vy
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 JavaTM 2015
Assembly Version: 3.0.1.0
InternalName: JavaTM.exe
FileVersion: 3.0.1.0
ProductName: JavaTM
ProductVersion: 3.0.1.0
FileDescription: JavaTM
OriginalFilename: JavaTM.exe

Ransom:MSIL/LockScreen.A also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.KillProc.38413
Cynet Malicious (score: 85)
ALYac Gen:Variant.MSILPerseus.26238
Cylance Unsafe
Zillya Trojan.Generic.Win32.1252013
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Trojan:MSIL/LockScreen.6a79b277
K7GW Riskware ( 0040eff71 )
Cybereason malicious.75161d
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/LockScreen.PG
APEX Malicious
Avast Win32:Ransom-AXZ [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.MSILPerseus.26238
NANO-Antivirus Trojan.Win32.KillProc.iaqlzk
MicroWorld-eScan Gen:Variant.MSILPerseus.26238
Tencent Win32.Trojan.Bp-ransomware.Ejqz
Ad-Aware Gen:Variant.MSILPerseus.26238
BitDefenderTheta Gen:NN.ZemsilF.34608.hm0@aqTwPnj
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_BRLOCK.SM
McAfee-GW-Edition Artemis
FireEye Generic.mg.f05624875161dfa7
Emsisoft Gen:Variant.MSILPerseus.26238 (B)
Avira HEUR/AGEN.1127555
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:MSIL/LockScreen.A
GData MSIL.Trojan-Ransom.BrLock.A
AhnLab-V3 Trojan/Win32.Dynamer.R181171
McAfee Artemis!F05624875161
MAX malware (ai score=88)
Malwarebytes Malware.AI.3834353323
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_BRLOCK.SM
Rising Ransom.LockScreen!8.83D (CLOUD)
Yandex Trojan.Agent!oAGSLdEP1Y4
Ikarus Trojan.MSIL.LockScreen
Fortinet MSIL/LockScreen.PG!tr
AVG Win32:Ransom-AXZ [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HgIASOkA

How to remove Ransom:MSIL/LockScreen.A virus?

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Ransom:MSIL/LockScreen.A 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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If the guide doesn’t help you to remove Ransom:MSIL/LockScreen.A 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: https://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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