Win32/LockScreen.ATX

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

What is Win32/LockScreen.ATX infection?

In this post you will certainly discover concerning the interpretation of Win32/LockScreen.ATX and its unfavorable influence on your computer system. Such ransomware are a type of malware that is specified by online fraudulences to require paying the ransom by a victim.

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In the majority of the situations, Win32/LockScreen.ATX ransomware will certainly instruct its targets to initiate funds move for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s tool.

Win32/LockScreen.ATX Summary

These modifications 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.;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • 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 files situated on the victim’s hard disk — so the target can no more utilize the information;
  • Preventing normal accessibility to the victim’s workstation;

Win32/LockScreen.ATX

The most common networks where Win32/LockScreen.ATX Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a repercussion of individual winding up on a resource that hosts a harmful software program;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the target’s PC or prevent the tool from operating in an appropriate manner – while likewise placing a ransom money note that points out the requirement for the victims to effect the payment for the function of decrypting the documents or bring back the file system back to the preliminary problem. In the majority of instances, the ransom note will show up when the customer reboots the COMPUTER after the system has currently been harmed.

Win32/LockScreen.ATX circulation channels.

In different edges of the world, Win32/LockScreen.ATX grows by leaps and bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom quantity may vary depending upon certain neighborhood (regional) settings. The ransom notes and also techniques of extorting the ransom amount might differ depending on particular neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software.

    In specific areas, the Trojans often wrongfully report having actually found some unlicensed applications allowed on the target’s gadget. The alert then requires the customer to pay the ransom money.

    Faulty declarations about unlawful content.

    In countries where software application piracy is much less preferred, this technique is not as effective for the cyber frauds. Additionally, the Win32/LockScreen.ATX popup alert might wrongly claim to be stemming from a police organization and also will certainly report having situated child porn or various other unlawful data on the tool.

    Win32/LockScreen.ATX popup alert might incorrectly declare to be acquiring from a regulation enforcement organization and also will report having located youngster pornography or other illegal data on the gadget. The alert will likewise include a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 6A018C18
md5: 76f905b29e7cec062a4e910d70b4a080
name: 76F905B29E7CEC062A4E910D70B4A080.mlw
sha1: 9562f49f895ae7c6a5b42f26d34ab0c972965af7
sha256: 7abc71798637e07d606beda6dc853b0ad82b40afe2c2fa67e1305b7f8cd88e95
sha512: 658b2f84d5cf8d43e6ce4e9cec8ba6cb073739e88cade61f5a6445056e9d9494619288d6614c447e08fc5987cc7465757bef47cd054103d4c2b3165b6bfd9df2
ssdeep: 12288:T5Z5YN8hE8iMvA6ua715OQ2e2PetVRbtxoNY4p:TzLPi8AE5Y9qFuJ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/LockScreen.ATX also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
DrWebTrojan.KillProc.24139
CynetMalicious (score: 85)
CylanceUnsafe
ZillyaTrojan.Blocker.Win32.7064
SangforTrojan.Win32.Save.a
AlibabaRansom:Win32/Blocker.c8054f25
Cybereasonmalicious.f895ae
CyrenW32/Trojan.PXFD-3009
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/LockScreen.ATX
APEXMalicious
AvastWin32:Trojan-gen
KasperskyTrojan-Ransom.Win32.Blocker.bcez
NANO-AntivirusTrojan.Win32.Blocker.cujbmr
TencentWin32.Trojan.Blocker.Akpl
SophosMal/Generic-S
ComodoMalware@#2owkwukm5s6s0
BitDefenderThetaGen:NN.ZelphiF.34608.SGW@aav5CVac
VIPRETrojan.Win32.Generic!BT
TrendMicroTROJ_SPNR.35E013
McAfee-GW-EditionBehavesLike.Win32.Worm.bh
FireEyeGeneric.mg.76f905b29e7cec06
SentinelOneStatic AI – Suspicious PE
WebrootW32.Malware.Gen
AviraHEUR/AGEN.1131389
KingsoftWin32.Heur.KVMH005.a.(kcloud)
MicrosoftTrojan:Win32/Wacatac.B!ml
AegisLabTrojan.Win32.Blocker.j!c
McAfeeArtemis!76F905B29E7C
MAXmalware (ai score=100)
VBA32Trojan-Ransom.Winlock.gen
PandaGeneric Malware
TrendMicro-HouseCallTROJ_SPNR.35E013
RisingRansom.Blocker!8.12A (CLOUD)
IkarusTrojan.Inject
FortinetW32/LockScreen.APR!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Blocker.HwUBxrsA

How to remove Win32/LockScreen.ATX 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.ATX 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.ATX 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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