Win32/LockScreen.BFA

Written by Robert Bailey

What is Win32/LockScreen.BFA infection?

In this article you will certainly find regarding the meaning of Win32/LockScreen.BFA and its unfavorable impact on your computer system. Such ransomware are a kind of malware that is specified by on-line fraudulences to demand paying the ransom money by a target.

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In the majority of the situations, Win32/LockScreen.BFA infection will instruct its targets to initiate funds move for the objective of counteracting the amendments that the Trojan infection has introduced to the target’s device.

Win32/LockScreen.BFA Summary

These adjustments can be as follows:

  • 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.
  • Unconventionial language used in binary resources: Russian;
  • 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
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s hard disk drive — so the sufferer can no longer use the information;
  • Preventing regular access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32/LockScreen.BFA

One of the most regular networks through which Win32/LockScreen.BFA Ransomware are injected are:

  • By means of phishing emails;
  • As a consequence of customer ending up on a source that holds a harmful software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the sufferer’s computer or protect against the device from working in a correct way – while also positioning a ransom money note that mentions the requirement for the victims to effect the repayment for the function of decrypting the papers or bring back the data system back to the preliminary problem. In a lot of circumstances, the ransom note will show up when the client reboots the PC after the system has currently been damaged.

Win32/LockScreen.BFA circulation channels.

In numerous corners of the globe, Win32/LockScreen.BFA grows by jumps as well as bounds. Nonetheless, the ransom notes and also techniques of obtaining the ransom money quantity might vary depending upon particular neighborhood (regional) setups. The ransom notes and also techniques of obtaining the ransom money quantity may differ depending on specific local (regional) settings.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software program.

    In certain areas, the Trojans frequently wrongfully report having discovered some unlicensed applications allowed on the target’s device. The sharp then demands the customer to pay the ransom money.

    Faulty statements regarding prohibited material.

    In countries where software application piracy is less popular, this technique is not as reliable for the cyber frauds. Conversely, the Win32/LockScreen.BFA popup alert might wrongly claim to be deriving from a law enforcement institution as well as will certainly report having situated child pornography or various other unlawful information on the device.

    Win32/LockScreen.BFA popup alert might incorrectly declare to be deriving from a law enforcement institution and also will report having situated kid pornography or various other illegal data on the device. The alert will in a similar way have a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 32B06B6A
md5: 6b5183897cb109886ad97642eae72fe4
name: 6B5183897CB109886AD97642EAE72FE4.mlw
sha1: 27ede109b7ef5f8970f3d49c7b6a13c91e55714e
sha256: 7048c8a0058714f2df0d5ed3aeb231934975fc992be5ff04526c6e1b5541ed1b
sha512: 03c390ebcb59c7ea1f1eeeab8d2950d6fdb4fa136c523eb8d23d6a8d937c581467888c344d53984f352f9ff6c27eff77a01bf6c53d1ff228219c2d2dfcd7e396
ssdeep: 24576:/ZojQ8U1WLW/A8lzjdrz7z1B+ZxLMSTC2H:hojQ7vpBOtTH
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/LockScreen.BFA also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0040eff71 )
DrWeb Trojan.Siggen5.9842
Cylance Unsafe
Zillya Trojan.LockScreen.Win32.9133
Sangfor Trojan.Win32.Symmi.frZX
Alibaba Ransom:Win32/LockScreen.8589b69a
K7GW Riskware ( 0040eff71 )
Cyren W32/Trojan.HUWK-7357
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/LockScreen.BFA
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Gimemo.azwg
NANO-Antivirus Trojan.Win32.Gimemo.cxyysm
Tencent Win32.Trojan.Gimemo.Wpth
Sophos Mal/Generic-S
Comodo Malware@#atr4nlftqa3i
BitDefenderTheta Gen:NN.ZelphiF.34678.8GW@aWk0k4cI
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.dh
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/LockScreen.CZ
AhnLab-V3 Trojan/Win32.LockScreen.R118255
McAfee Artemis!6B5183897CB1
MAX malware (ai score=100)
VBA32 TScope.Trojan.Delf
Panda Generic Malware
Rising Ransom.LockScreen!8.83D (CLOUD)
Ikarus Trojan.VkHost
Fortinet W32/LockScreen.ALF!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.PornoBlocker.HwUBEpsA

How to remove Win32/LockScreen.BFA 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 Win32/LockScreen.BFA 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 Win32/LockScreen.BFA 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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