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.


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:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Siggen5.9275
Cynet Malicious (score: 100)
ALYac Gen:Variant.Symmi.25490
Cylance Unsafe
Zillya Trojan.Foreign.Win32.6068
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Urausy.593a75c3
Cybereason malicious.f77def
Symantec Trojan.Ransomlock.Q!AZ
ESET-NOD32 Win32/LockScreen.ASB
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Symmi.25490
NANO-Antivirus Trojan.Win32.RiskGen.bmoowa
MicroWorld-eScan Gen:Variant.Symmi.25490
Tencent Win32.Trojan.Lockscreen.Ljuf
Ad-Aware Gen:Variant.Symmi.25490
Sophos ML/PE-A + Mal/Ransom-BC
Comodo Malware@#2zwky9266v3g6
BitDefenderTheta Gen:NN.ZexaF.34670.buW@aaD3qP
VIPRE Trojan.Win32.LockScreen.aun (v)
TrendMicro TROJ_SPNR.0BDC13
McAfee-GW-Edition BehavesLike.Win32.Sality.nh
Emsisoft Gen:Variant.Symmi.25490 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.dpobk
Webroot Trojan.Dropper.Gen
Avira TR/Crypt.ZPACK.Gen2
Kingsoft Win32.Heur.KVMH004.a.(kcloud)
Microsoft Ransom:Win32/Urausy.E
Arcabit Trojan.Symmi.D6392
AegisLab Trojan.Win32.Foreign.j!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Symmi.25490
TACHYON Trojan/W32.Foreign.31744.E
McAfee Ransom-FBQF!349988CF77DE
MAX malware (ai score=100)
VBA32 Malware-Cryptor.Inject.gen.2
Malwarebytes Malware.Heuristic.1004
Panda Trj/Dtcontx.C
TrendMicro-HouseCall TROJ_SPNR.0BDC13
Rising Ransom.Urausy!8.2B7 (CLOUD)
Yandex Trojan.GenAsa!HKM5791Bjxg
Ikarus Trojan-Ransom.Foreign
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/LockScreen.ASD!tr
AVG Win32:Trojan-gen
Qihoo-360 Win32/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.

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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.

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Press “Install” button.

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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?

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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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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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