Written by Robert Bailey

What is Win32/LockScreen.BBA infection?

In this short article you will certainly locate regarding the definition of Win32/LockScreen.BBA as well as its unfavorable impact 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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Most of the instances, Win32/LockScreen.BBA virus will advise its targets to launch funds move for the function of reducing the effects of the amendments that the Trojan infection has actually introduced to the victim’s device.

Win32/LockScreen.BBA Summary

These alterations 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.
  • Performs some HTTP requests;
  • Unconventionial binary language: Russian;
  • Unconventionial language used in binary resources: Russian;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the sufferer’s hard disk — so the target can no longer make use of the information;
  • Preventing routine accessibility to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains Ransom:Win32/LockScreen.c4d7de3a


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

  • By means of phishing e-mails;
  • As a consequence of customer ending up on a source that hosts a malicious software application;

As soon as the Trojan is successfully infused, it will either cipher the data on the sufferer’s PC or prevent the gadget from operating in a correct way – while likewise placing a ransom money note that points out the need for the targets to impact the payment for the objective of decrypting the records or recovering the data system back to the first problem. In many circumstances, the ransom note will certainly show up when the customer reboots the COMPUTER after the system has already been damaged.

Win32/LockScreen.BBA circulation networks.

In numerous edges of the globe, Win32/LockScreen.BBA grows by leaps and bounds. Nonetheless, the ransom notes and methods of obtaining the ransom amount may differ depending upon certain neighborhood (local) settings. The ransom notes and also tricks of extorting the ransom money quantity might differ depending on certain neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software application.

    In certain areas, the Trojans typically wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s device. The alert then requires the individual to pay the ransom money.

    Faulty statements regarding illegal material.

    In countries where software application piracy is much less prominent, this technique is not as efficient for the cyber fraudulences. Alternatively, the Win32/LockScreen.BBA popup alert might incorrectly declare to be stemming from a police organization and also will certainly report having situated child porn or various other illegal data on the gadget.

    Win32/LockScreen.BBA popup alert may falsely assert to be obtaining from a regulation enforcement institution and will certainly report having located kid porn or various other illegal information on the gadget. The alert will in a similar way include a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 37F03A89
md5: 73e2353bfd910e06d090739dff70a331
name: 73E2353BFD910E06D090739DFF70A331.mlw
sha1: 231ebee5958bfda461dfa183213a2b7100193136
sha256: 992ccebb0e2319678a21442622684a42b7b94b6645ea3fdaec3223bbcd8ea3b2
sha512: 941111d5107236085de51286a1384d915f69c2ab6d3a1f4c1e5904f61b377697fb2cceb60808f2d3172faafd801bc0e8a1bf857e34c86eba263a31b246b55e04
ssdeep: 12288:VwDKK8d/jAfGOpWpA4ml7hbgLg7vjfuUeZFrwCXmL4:6eKaAftB4mlNDjx6Bm
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0419 0x04e3

Win32/LockScreen.BBA also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0055e4091 )
DrWeb Trojan.Winlock.9979
Cynet Malicious (score: 99)
Cylance Unsafe
Zillya Trojan.Blocker.Win32.17729
Alibaba Ransom:Win32/LockScreen.c4d7de3a
K7GW Trojan ( 0055e4091 )
Cybereason malicious.5958bf
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/LockScreen.BBA
APEX Malicious
Avast Win32:Malware-gen
Kaspersky UDS:DangerousObject.Multi.Generic
NANO-Antivirus Trojan.Win32.KeyGenA.cxcsfd
Tencent Win32.Trojan.Blocker.Ajbu
Sophos Mal/Generic-S
Comodo Malware@#9d3kgsrkry5l
BitDefenderTheta Gen:NN.ZelphiF.34688.IG0@a8BP3Ibc
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis!Trojan
Jiangmin Trojan.Blocker.ars
Avira TR/Agent.cada.5831
Microsoft Trojan:Win32/Ymacco.AA99
AegisLab Trojan.Win32.Blocker.j!c
McAfee Artemis!73E2353BFD91
MAX malware (ai score=99)
VBA32 Trojan-Ransom.Winlock.gen
Panda Trj/CI.A
Rising Trojan.Generic@ML.81 (RDML:Z5OwU3BRoszyGEKS+mGSYw)
Yandex Trojan.Blocker!+nKBnMjmZ5M
Ikarus Trojan.Win32.LockScreen
Fortinet W32/LockScreen.BBA
AVG Win32:Malware-gen

How to remove Win32/LockScreen.BBA 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.BBA 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.BBA 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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