What is Win32/LockScreen.APF infection?

In this article you will discover regarding the meaning of Win32/LockScreen.APF as well as its adverse influence on your computer. Such ransomware are a form of malware that is elaborated by on the internet fraudulences to demand paying the ransom money by a target.

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In the majority of the situations, Win32/LockScreen.APF virus will instruct its sufferers to launch funds move for the function of reducing the effects of the changes that the Trojan infection has actually introduced to the sufferer’s tool.

Win32/LockScreen.APF Summary

These adjustments can be as adheres to:

  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the sufferer’s hard disk drive — so the victim can no longer utilize the data;
  • 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.


The most common channels where Win32/LockScreen.APF are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of customer winding up on a source that holds a harmful software program;

As quickly as the Trojan is effectively infused, it will either cipher the data on the target’s PC or avoid the tool from working in an appropriate way – while additionally placing a ransom note that mentions the need for the targets to effect the repayment for the objective of decrypting the documents or recovering the data system back to the first condition. In the majority of instances, the ransom money note will show up when the client reboots the COMPUTER after the system has already been harmed.

Win32/LockScreen.APF circulation networks.

In various corners of the globe, Win32/LockScreen.APF expands by leaps and also bounds. Nonetheless, the ransom money notes as well as methods of extorting the ransom quantity may vary relying on certain regional (local) settings. The ransom notes as well as methods of extorting the ransom amount might vary depending on specific neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having found some unlicensed applications allowed on the target’s gadget. The sharp after that demands the customer to pay the ransom.

    Faulty declarations regarding illegal content.

    In nations where software application piracy is much less preferred, this approach is not as efficient for the cyber scams. Additionally, the Win32/LockScreen.APF popup alert may wrongly declare to be stemming from a police organization as well as will report having located child pornography or other illegal data on the device.

    Win32/LockScreen.APF popup alert may falsely declare to be obtaining from a law enforcement organization and also will certainly report having located kid porn or other prohibited information on the tool. The alert will likewise include a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: E56DA064
md5: b8df885956f4d3480ddcbefadd8a3f59
name: B8DF885956F4D3480DDCBEFADD8A3F59.mlw
sha1: b0518d4e1a17e1c7c1acce212a983954b9327dc9
sha256: 9b447eeaec4ca5ebbefcca388035d6d281b0459934a3cb788365a248dcd52131
sha512: 21e0820450b66af7de99aff80d3d2ff8eb2b398235720de382764994493bd542fa54427755b1b47a015aadd5fa5e7e6d83c1cf3aadf0f58cadf389b1d8513ac9
ssdeep: 6144:bJpGIXLFbWt7KGSFfyCw8f8M0X0KBiED7paaZXowmoWULXlq0:VpxXLJm+pF/38p/BisXXmuLV
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/LockScreen.APF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0041cba31 )
Cynet Malicious (score: 85)
ALYac Gen:Variant.Jacard.208863
Cylance Unsafe
Zillya Trojan.Genome.Win32.209034
Sangfor Ransom.Win32.LockScreen.CZ
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/LockScreen.65013ef9
K7GW Trojan ( 0041cba31 )
Cybereason malicious.956f4d
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/LockScreen.APF
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Zusy-9840942-0
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Variant.Jacard.208863
NANO-Antivirus Trojan.Win32.LockScreen.ebcnio
MicroWorld-eScan Gen:Variant.Jacard.208863
Tencent Win32.Trojan.Gimemo.Pikd
Ad-Aware Gen:Variant.Jacard.208863
Comodo Malware@#3twskibks1mrd
BitDefenderTheta Gen:NN.ZelphiF.34628.yGW@a0IFmgnc
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_LockScreen.R002C0DK920
McAfee-GW-Edition BehavesLike.Win32.Dropper.fh
FireEye Gen:Variant.Jacard.208863
Emsisoft Gen:Variant.Jacard.208863 (B)
Avira HEUR/AGEN.1105451
eGambit Unsafe.AI_Score_65%
Microsoft Ransom:Win32/LockScreen.CZ
AegisLab Trojan.Win32.Genome.4!c
GData Gen:Variant.Jacard.208863
AhnLab-V3 Trojan/Win32.Ransom.R51659
McAfee Artemis!B8DF885956F4
MAX malware (ai score=99)
VBA32 Trojan-Ransom.Winlock.gen
Panda Generic Malware
TrendMicro-HouseCall Ransom_LockScreen.R002C0DK920
Rising Trojan.LockScreen!1.A3BD (CLASSIC)
Yandex Trojan.GenAsa!rngMPpCyZyI
Ikarus Trojan-Ransom.DoubleEagle
Fortinet W32/LockScreen.ALF!tr
AVG Win32:Trojan-gen
Qihoo-360 Android/Ransom.PornoBlocker.HgIASQ4A

How to remove Win32/LockScreen.APF 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 Win32/LockScreen.APF 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.APF you can always ask me in the comments for getting help.

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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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