Ransom:Win32/LockScreen.BZ

Written by Robert Bailey

What is Ransom:Win32/LockScreen.BZ infection?

In this short article you will certainly discover concerning the interpretation of Ransom:Win32/LockScreen.BZ and also its negative influence on your computer. Such ransomware are a type of malware that is specified by online frauds to require paying the ransom by a sufferer.

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Most of the cases, Ransom:Win32/LockScreen.BZ infection will certainly advise its targets to initiate funds move for the function of counteracting the amendments that the Trojan infection has actually introduced to the target’s gadget.

Ransom:Win32/LockScreen.BZ Summary

These modifications 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;
  • 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 compressed using UPX;
  • 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.
  • 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.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s disk drive — so the sufferer can no longer utilize the data;
  • Preventing normal access 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.

Ransom:Win32/LockScreen.BZ

One of the most normal channels where Ransom:Win32/LockScreen.BZ Trojans are infused are:

  • By methods of phishing emails;
  • As an effect of customer winding up on a resource that holds a harmful software program;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s PC or prevent the gadget from working in a correct manner – while also putting a ransom money note that states the demand for the targets to effect the settlement for the purpose of decrypting the files or bring back the documents system back to the preliminary condition. In a lot of instances, the ransom money note will show up when the client reboots the COMPUTER after the system has already been harmed.

Ransom:Win32/LockScreen.BZ circulation channels.

In different edges of the world, Ransom:Win32/LockScreen.BZ grows by jumps as well as bounds. However, the ransom money notes as well as techniques of extorting the ransom amount might vary relying on certain regional (regional) setups. The ransom money notes and also techniques of obtaining the ransom money amount may vary depending on certain regional (local) settings.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software.

    In particular locations, the Trojans frequently wrongfully report having actually detected some unlicensed applications made it possible for on the target’s tool. The alert then requires the individual to pay the ransom.

    Faulty statements concerning illegal content.

    In countries where software piracy is much less prominent, this approach is not as efficient for the cyber fraudulences. Alternatively, the Ransom:Win32/LockScreen.BZ popup alert may falsely claim to be originating from a police institution and will certainly report having located kid porn or various other illegal information on the device.

    Ransom:Win32/LockScreen.BZ popup alert might incorrectly assert to be deriving from a regulation enforcement establishment and will report having situated kid pornography or other prohibited information on the device. The alert will in a similar way contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 30E2821B
md5: 5f35d29377e680dfd1620170ae89bef9
name: 5F35D29377E680DFD1620170AE89BEF9.mlw
sha1: f926ada51bfa1ad7064296ebbd26e17b2204b300
sha256: d5be1010a755b34995fdc05b966360eaaa01ffa7fb23aa6e753177440cf98885
sha512: beb0a7531416aa321f21f3547c9be526b8cc55df28aea4512fecd285c4f3acd4f0577fff235a4dddbeb81be4ff030ad0cd329407bb0fe76933c86b85d359a764
ssdeep: 3072:d91sOnt/1lw56sucnkL99D9NsKWTzJLnbGShJ9h58pPyRACtVZRKIBt4FD+BCkK:RsK20snERsKWBLbGSV81S1bKst4FGKG
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Ransom:Win32/LockScreen.BZ also known as:

GridinSoftTrojan.Ransom.Gen
DrWebTrojan.Winlock.5790
CynetMalicious (score: 100)
CAT-QuickHealRansom.Weenloc.A8
ALYacGen:Variant.Barys.673
ZillyaTrojan.PornoAsset.Win32.23257
SangforTrojan.Win32.Elzob.fr1616
AlibabaRansom:Win32/LockScreen.fe4bb87a
Cybereasonmalicious.377e68
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/LockScreen.AHR
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Ransom.Win32.Birele.fdj
BitDefenderGen:Variant.Barys.673
NANO-AntivirusTrojan.Win32.Winlock.edmgiy
MicroWorld-eScanGen:Variant.Barys.673
Ad-AwareGen:Variant.Barys.673
SophosMal/Generic-S (PUA)
ComodoMalware@#nex9xyr176wd
BitDefenderThetaGen:NN.ZelphiF.34738.omGfa8cfGZic
VIPRETrojan.Win32.Generic.pak!cobra
McAfee-GW-EditionBehavesLike.Win32.Trojan.dc
FireEyeGen:Variant.Barys.673
EmsisoftGen:Variant.Barys.673 (B)
SentinelOneStatic AI – Suspicious PE
WebrootW32.Adware.Gen
AviraHEUR/AGEN.1105487
eGambitGeneric.Malware
Antiy-AVLTrojan/Generic.ASMalwS.147FC7
MicrosoftRansom:Win32/LockScreen.BZ
GDataGen:Variant.Barys.673
McAfeeArtemis!5F35D29377E6
VBA32Hoax.Birele
PandaGeneric Malware
RisingWorm.Pahooka!1.BC8B (CLASSIC)
IkarusTrojan-Ransom.Birele
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Birele.FDJ!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove Ransom:Win32/LockScreen.BZ 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:Win32/LockScreen.BZ 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Ransom:Win32/LockScreen.BZ 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: http://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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