Win32/LockScreen.ASB

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

What is Win32/LockScreen.ASB infection?

In this post you will certainly discover about the interpretation of Win32/LockScreen.ASB and also its negative impact on your computer. Such ransomware are a type of malware that is specified by online frauds to demand paying the ransom money by a target.

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In the majority of the instances, Win32/LockScreen.ASB ransomware will certainly instruct its targets to start funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually introduced to the sufferer’s tool.

Win32/LockScreen.ASB Summary

These modifications can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the target’s hard disk drive — so the victim can no more use the information;
  • Preventing routine access 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.

Win32/LockScreen.ASB

The most normal channels whereby Win32/LockScreen.ASB Ransomware Trojans are infused are:

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

As quickly as the Trojan is successfully infused, it will either cipher the information on the victim’s PC or protect against the gadget from operating in an appropriate fashion – while also positioning a ransom money note that states the need for the targets to impact the settlement for the purpose of decrypting the files or restoring the documents system back to the initial condition. In most circumstances, the ransom note will certainly turn up when the client reboots the COMPUTER after the system has currently been harmed.

Win32/LockScreen.ASB circulation networks.

In numerous edges of the globe, Win32/LockScreen.ASB expands by jumps and also bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom quantity may differ depending on specific local (regional) setups. The ransom money notes and also methods of extorting the ransom money quantity may differ depending on certain local (local) settings.

Ransomware injection

As an example:

    Faulty notifies about unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the victim’s gadget. The sharp then demands the individual to pay the ransom.

    Faulty statements about illegal web content.

    In countries where software program piracy is much less prominent, this method is not as reliable for the cyber frauds. Alternatively, the Win32/LockScreen.ASB popup alert might falsely assert to be stemming from a police institution and will report having located child pornography or other illegal data on the gadget.

    Win32/LockScreen.ASB popup alert may incorrectly claim to be acquiring from a regulation enforcement establishment as well as will certainly report having situated kid porn or various other unlawful information on the gadget. The alert will in a similar way consist of a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 7F81519E
md5: 349988cf77deff0e71e85e172541ea67
name: 349988CF77DEFF0E71E85E172541EA67.mlw
sha1: 93ff2e360547efa8af8b1d086a77cac193b95e0a
sha256: 88b66d91f7b7e7dfb5db1d3a7310330f8895950b7ae5f7bd2a548b8133ac0094
sha512: d94cb2792904119e563908ce055a86c7c0a5cacf1c24789b9cbdec13591e77b6eea098933c8131fd673c16e2dc4be03ae1a6e25defae6fabc826e23b0c2650e3
ssdeep: 384:DXwR4h6axw6V91Usw8z8nMg6L6H6LFLqMWg/b+c0UtKtvkRG/MsoKyitberRMzF:7si9toMWH6RJWg/b+c0MKdkRG5WR8P
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/LockScreen.ASB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
DrWebTrojan.Siggen5.9275
CynetMalicious (score: 100)
ALYacGen:Variant.Symmi.25490
CylanceUnsafe
ZillyaTrojan.Foreign.Win32.6068
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaRansom:Win32/Urausy.593a75c3
Cybereasonmalicious.f77def
SymantecTrojan.Ransomlock.Q!AZ
ESET-NOD32Win32/LockScreen.ASB
APEXMalicious
AvastWin32:Trojan-gen
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderGen:Variant.Symmi.25490
NANO-AntivirusTrojan.Win32.RiskGen.bmoowa
MicroWorld-eScanGen:Variant.Symmi.25490
TencentWin32.Trojan.Lockscreen.Ljuf
Ad-AwareGen:Variant.Symmi.25490
SophosML/PE-A + Mal/Ransom-BC
ComodoMalware@#2zwky9266v3g6
BitDefenderThetaGen:NN.ZexaF.34670.buW@aaD3qP
VIPRETrojan.Win32.LockScreen.aun (v)
TrendMicroTROJ_SPNR.0BDC13
McAfee-GW-EditionBehavesLike.Win32.Sality.nh
FireEyeGeneric.mg.349988cf77deff0e
EmsisoftGen:Variant.Symmi.25490 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Generic.dpobk
WebrootTrojan.Dropper.Gen
AviraTR/Crypt.ZPACK.Gen2
KingsoftWin32.Heur.KVMH004.a.(kcloud)
MicrosoftRansom:Win32/Urausy.E
ArcabitTrojan.Symmi.D6392
AegisLabTrojan.Win32.Foreign.j!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataGen:Variant.Symmi.25490
TACHYONTrojan/W32.Foreign.31744.E
McAfeeRansom-FBQF!349988CF77DE
MAXmalware (ai score=100)
VBA32Malware-Cryptor.Inject.gen.2
MalwarebytesMalware.Heuristic.1004
PandaTrj/Dtcontx.C
TrendMicro-HouseCallTROJ_SPNR.0BDC13
RisingRansom.Urausy!8.2B7 (CLOUD)
YandexTrojan.GenAsa!HKM5791Bjxg
IkarusTrojan-Ransom.Foreign
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/LockScreen.ASD!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Urausy.HxQBEpsA

How to remove Win32/LockScreen.ASB 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.ASB 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.ASB 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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