Ransom.LockScreen

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

What is Ransom.LockScreen infection?

In this article you will discover concerning the meaning of Ransom.LockScreen and its adverse effect on your computer system. Such ransomware are a type of malware that is elaborated by on-line scams to require paying the ransom money by a target.

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In the majority of the cases, Ransom.LockScreen virus will advise its targets to initiate funds transfer for the purpose of counteracting the amendments that the Trojan infection has actually introduced to the sufferer’s device.

Ransom.LockScreen 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.
  • Expresses interest in specific running processes;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is likely packed with VMProtect;
  • Detects Sandboxie through the presence of a library;
  • Tries to suspend Cuckoo threads to prevent logging of malicious activity;
  • 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 hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to modify Explorer settings to prevent hidden files from being displayed;
  • Ciphering the papers located on the sufferer’s hard drive — so the target can no more make use of the data;
  • Preventing regular accessibility to the target’s workstation;

Ransom.LockScreen

One of the most regular networks through which Ransom.LockScreen Ransomware are injected are:

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

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or avoid the device from working in an appropriate manner – while likewise putting a ransom money note that discusses the requirement for the victims to impact the repayment for the function of decrypting the records or recovering the data system back to the preliminary problem. In the majority of circumstances, the ransom money note will certainly turn up when the customer reboots the COMPUTER after the system has actually already been damaged.

Ransom.LockScreen circulation networks.

In various edges of the world, Ransom.LockScreen expands by leaps and also bounds. Nevertheless, the ransom money notes and also methods of extorting the ransom quantity might differ relying on certain regional (local) setups. The ransom money notes as well as methods of extorting the ransom money quantity might vary depending on particular neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty informs about unlicensed software application.

    In certain locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the sufferer’s tool. The alert after that demands the user to pay the ransom money.

    Faulty statements regarding illegal material.

    In nations where software application piracy is much less prominent, this technique is not as efficient for the cyber fraudulences. Conversely, the Ransom.LockScreen popup alert may incorrectly assert to be stemming from a law enforcement organization and also will certainly report having situated kid pornography or various other unlawful data on the device.

    Ransom.LockScreen popup alert might incorrectly assert to be obtaining from a regulation enforcement establishment and also will report having situated child pornography or other illegal data on the device. The alert will likewise contain a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 9AA3BCDA
md5: 0f394f34ea3bac8124dee81ce4834ef3
name: 0F394F34EA3BAC8124DEE81CE4834EF3.mlw
sha1: 32d6d57f73a09b61ff129ce5cdc048b8278e9ba5
sha256: 8be3d8ba1504f108c4dbeb864ab220aa7c7de47ddd2eb0d918c00a31ec1c776f
sha512: f54d73656f49a8aff5337841e9c9cb485dc52483a46a426f9cbc2fb9a08ec207ea20ccfb8a9b263ff2b46b6413a63a8ae2fa3e65d19555e9abc663c7fa22199a
ssdeep: 24576:NMD6lryKqx1LzvrBw7NDyiftgO/mCsKNZqUZHg5CmLdM/v5274wqlza:NzGvpzv27NmiftgGrZqUdhCdMsswqM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom.LockScreen also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
K7AntiVirusRiskware ( 0040eff71 )
Elasticmalicious (high confidence)
CynetMalicious (score: 100)
ALYacTrojan.GenericKD.30360748
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.4ea3ba
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Generik.LGWPVL
APEXMalicious
AvastWin32:Malware-gen
BitDefenderTrojan.GenericKD.30360748
NANO-AntivirusTrojan.Win32.Weenloc.ezdfuq
MicroWorld-eScanTrojan.GenericKD.30360748
TencentWin32.Trojan.Generic.Gvp
Ad-AwareTrojan.GenericKD.30360748
BitDefenderThetaGen:NN.ZexaF.34670.vPW@aqTKw7bc
FireEyeGeneric.mg.0f394f34ea3bac81
EmsisoftTrojan.GenericKD.30360748 (B)
SentinelOneStatic AI – Suspicious PE
AviraTR/WeenLoc.abfvn
eGambitUnsafe.AI_Score_100%
MicrosoftRansom:Win32/Weenloc.A
AegisLabTrojan.Win32.Generic.4!c
GDataTrojan.GenericKD.30360748
McAfeeArtemis!0F394F34EA3B
VBA32TScope.Malware-Cryptor.SB
MalwarebytesRansom.LockScreen
PandaTrj/GdSda.A
RisingTrojan.Generic@ML.100 (RDML:5qBfiyJlfwtMFoMFN6Qnew)
YandexTrojan.Agent!W5QczWz4zrM
IkarusTrojan.Win32.VMProtect
FortinetW32/Generik.LGWPVL!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Weenloc.HgIASScA

How to remove Ransom.LockScreen 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 Ransom.LockScreen 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 Ransom.LockScreen 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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