Win32/LockScreen.ARR

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

What is Win32/LockScreen.ARR infection?

In this short article you will certainly discover about the interpretation of Win32/LockScreen.ARR as well as its unfavorable influence on your computer system. Such ransomware are a kind of malware that is elaborated by online fraudulences to require paying the ransom by a victim.

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In the majority of the instances, Win32/LockScreen.ARR virus will advise its victims to launch funds move for the function of neutralizing the amendments that the Trojan infection has introduced to the victim’s device.

Win32/LockScreen.ARR Summary

These alterations can be as complies with:

  • 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.
  • A process attempted to delay the analysis task.;
  • Performs some HTTP requests;
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers found on the victim’s hard disk drive — so the sufferer can no more use the information;
  • Preventing routine 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.
Similar behavior
Related domains
z.whorecord.xyzRansom:Win32/LockScreen.bb6b82d0
a.tomx.xyzRansom:Win32/LockScreen.bb6b82d0
www.myip.ruRansom:Win32/LockScreen.bb6b82d0

Win32/LockScreen.ARR

One of the most common networks where Win32/LockScreen.ARR are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual ending up on a resource that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the sufferer’s computer or prevent the gadget from operating in an appropriate way – while likewise placing a ransom note that points out the requirement for the sufferers to impact the repayment for the purpose of decrypting the files or bring back the data system back to the initial condition. In the majority of circumstances, the ransom note will certainly turn up when the client restarts the COMPUTER after the system has already been damaged.

Win32/LockScreen.ARR circulation networks.

In numerous corners of the globe, Win32/LockScreen.ARR grows by jumps and bounds. However, the ransom notes as well as techniques of extorting the ransom quantity might differ relying on certain regional (regional) setups. The ransom notes and techniques of obtaining the ransom amount might differ depending on certain local (regional) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software program.

    In specific locations, the Trojans frequently wrongfully report having actually spotted some unlicensed applications made it possible for on the sufferer’s device. The sharp after that requires the individual to pay the ransom money.

    Faulty declarations about unlawful content.

    In countries where software piracy is much less prominent, this method is not as effective for the cyber frauds. Additionally, the Win32/LockScreen.ARR popup alert might falsely claim to be deriving from a law enforcement organization and also will certainly report having located kid pornography or various other prohibited data on the gadget.

    Win32/LockScreen.ARR popup alert may falsely assert to be acquiring from a law enforcement establishment as well as will report having located youngster pornography or other illegal data on the gadget. The alert will similarly consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 1C6B664D
md5: c3e3557faf8242013032daf1a8587daf
name: C3E3557FAF8242013032DAF1A8587DAF.mlw
sha1: 35fb27ceb7cd9122a3a996708bb92438161e0011
sha256: 9d64c9362511db89cb6087836aa6771fe3b7384104f86b0d2872661b7fbbb314
sha512: 2ab4734db05dbb3d7a553eff2b4f974589560107875395e0a0730e8a2ff3c3a41e6f4e6deff6da9fbf72074627194ceb3a8bca3cdc2b253aa386752cda8937f3
ssdeep: 12288:4mE/VxuYui4F2R8yCeqlT4oE3WKI3a7g7VRa9qBWKw:2fmi4F2RTkZ4pyTzMqU
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/LockScreen.ARR also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 004bb5a41 )
Elasticmalicious (high confidence)
DrWebTrojan.KillProc.27677
CynetMalicious (score: 100)
ALYacTrojan.Generic.16659954
CylanceUnsafe
ZillyaTrojan.LockScreen.Win32.8208
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/LockScreen.bb6b82d0
K7GWTrojan ( 004bb5a41 )
Cybereasonmalicious.faf824
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/LockScreen.ARR
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Ransom.Win32.Gimemo.bfsf
BitDefenderTrojan.Generic.16659954
NANO-AntivirusTrojan.Win32.Gimemo.cuukxf
MicroWorld-eScanTrojan.Generic.16659954
TencentWin32.Trojan.Gimemo.Szux
Ad-AwareTrojan.Generic.16659954
SophosMal/Generic-S
ComodoMalware@#xt9bhd14l7sc
BitDefenderThetaGen:NN.ZelphiF.34690.ZGW@a07uIgkc
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Generic.ch
FireEyeGeneric.mg.c3e3557faf824201
EmsisoftTrojan.Generic.16659954 (B)
JiangminTrojan/Gimemo.glt
AviraTR/Ransom.yveu
eGambitGeneric.Malware
Antiy-AVLTrojan/Generic.ASMalwS.184582A
MicrosoftTrojan:Win32/Dynamer!ac
AegisLabTrojan.Win32.Gimemo.j!c
GDataTrojan.Generic.16659954
McAfeeArtemis!C3E3557FAF82
MAXmalware (ai score=100)
VBA32Trojan-Ransom.Winlock.gen
PandaTrj/CI.A
RisingRansom.Gimemo!8.306 (CLOUD)
YandexTrojan.GenAsa!5QM88Kqf2C8
IkarusTrojan-Spy.Zbot
FortinetW32/LockScreen.APR!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove Win32/LockScreen.ARR 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.ARR 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.ARR 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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