MSIL/LockScreen.HF

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is MSIL/LockScreen.HF infection?

In this post you will certainly find regarding the meaning of MSIL/LockScreen.HF and also its adverse impact on your computer system. Such ransomware are a kind of malware that is elaborated by online scams to demand paying the ransom by a target.

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In the majority of the situations, MSIL/LockScreen.HF virus will advise its sufferers to start funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the target’s gadget.

MSIL/LockScreen.HF Summary

These modifications 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.
  • Crashed cuckoomon during analysis. Report this error to the Github repo.;
  • 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.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers found on the victim’s hard drive — so the target can no longer utilize the information;
  • Preventing normal accessibility to the victim’s workstation;

MSIL/LockScreen.HF

The most common networks where MSIL/LockScreen.HF Ransomware are infused are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a source that hosts a malicious software;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the sufferer’s computer or protect against the tool from working in an appropriate fashion – while also placing a ransom money note that discusses the demand for the targets to impact the settlement for the objective of decrypting the documents or recovering the file system back to the first problem. In many circumstances, the ransom note will certainly come up when the client reboots the COMPUTER after the system has currently been harmed.

MSIL/LockScreen.HF distribution channels.

In numerous corners of the world, MSIL/LockScreen.HF expands by jumps and also bounds. However, the ransom notes as well as techniques of obtaining the ransom amount may vary depending upon certain regional (local) settings. The ransom notes and tricks of obtaining the ransom money quantity might vary depending on particular regional (local) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software program.

    In particular areas, the Trojans frequently wrongfully report having spotted some unlicensed applications enabled on the sufferer’s gadget. The alert then demands the individual to pay the ransom.

    Faulty declarations concerning prohibited material.

    In countries where software piracy is less popular, this method is not as reliable for the cyber frauds. Conversely, the MSIL/LockScreen.HF popup alert may incorrectly claim to be deriving from a police organization as well as will report having situated child porn or various other unlawful data on the gadget.

    MSIL/LockScreen.HF popup alert might wrongly assert to be obtaining from a legislation enforcement organization and also will report having situated child porn or other prohibited information on the gadget. The alert will in a similar way contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 31352AD3
md5: 97a3ec09abd6277bc198a8e841bee7d4
name: 97A3EC09ABD6277BC198A8E841BEE7D4.mlw
sha1: 553d9ec48fc5b8df4df2c2777b7580f9c638435e
sha256: 4ba14c9f64a5a6eec81f145d8efaa25e4fdb3fb5aa67414861bddcd77294b682
sha512: 0a286608758934454ccd4555645df4954c96acfb6d8818f416a111f1810de90481d7ea5c4a7a3a2c9a62544952d8f67dd63b039f69e76e90843759bb169a0bc4
ssdeep: 3072:RdQCou6Go2ou6GorY5Y2nDSLQJtawt9/gW:dDsY5YKD0Q/aq9
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2013
Assembly Version: 1.0.0.0
InternalName: act.exe
FileVersion: 1.0.0.0
ProductName: MULTITAPPROCESSORLIB
ProductVersion: 1.0.0.0
FileDescription: MULTITAPPROCESSORLIB
OriginalFilename: act.exe

MSIL/LockScreen.HF also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 700000121 )
DrWebTrojan.KillProc.28062
CynetMalicious (score: 99)
ALYacGen:Variant.MSILPerseus.218238
CylanceUnsafe
ZillyaTrojan.LockScreen.Win32.10343
AlibabaRansom:MSIL/Gimemo.f53d952e
K7GWTrojan ( 700000121 )
Cybereasonmalicious.9abd62
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/LockScreen.HF
APEXMalicious
AvastMSIL:LockScreen-AI [Trj]
KasperskyTrojan-Ransom.Win32.Gimemo.bgny
BitDefenderGen:Variant.MSILPerseus.218238
NANO-AntivirusTrojan.Win32.Gimemo.cdqagx
MicroWorld-eScanGen:Variant.MSILPerseus.218238
TencentWin32.Trojan.Gimemo.Huzb
Ad-AwareGen:Variant.MSILPerseus.218238
SophosMal/Generic-S
ComodoMalware@#2aykskl2kx7ne
BitDefenderThetaGen:NN.ZemsilF.34690.gm0@aKkWadb
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionArtemis!Trojan
FireEyeGen:Variant.MSILPerseus.218238
EmsisoftGen:Variant.MSILPerseus.218238 (B)
JiangminTrojan/Gimemo.hek
AviraHEUR/AGEN.1130182
eGambitUnsafe.AI_Score_99%
Antiy-AVLTrojan/Generic.ASMalwS.37D936
KingsoftWin32.Troj.Generic_a.a.(kcloud)
MicrosoftRansom:MSIL/Genasom
GDataGen:Variant.MSILPerseus.218238
AhnLab-V3Trojan/Win32.Gimemo.R77409
McAfeeArtemis!97A3EC09ABD6
MAXmalware (ai score=100)
VBA32Trojan.MSIL.gen.16
PandaTrj/CI.A
RisingRansom.Genasom!8.293 (CLOUD)
IkarusTrojan-Ransom.Gimemo
FortinetW32/Gimemo.BGNY!tr
AVGMSIL:LockScreen-AI [Trj]
Paloaltogeneric.ml

How to remove MSIL/LockScreen.HF 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.

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.HF 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 MSIL/LockScreen.HF 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/comparison

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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