Written by Robert Bailey

What is Ransom:Win32/LockScreen.CU infection?

In this article you will certainly find about the meaning of Ransom:Win32/LockScreen.CU as well as its unfavorable influence on your computer system. Such ransomware are a type of malware that is clarified by on-line fraudulences to require paying the ransom money by a target.

GridinSoft Anti-Malware Review

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
GridinSoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | GridinSoft

Most of the situations, Ransom:Win32/LockScreen.CU ransomware will advise its sufferers to initiate funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually presented to the sufferer’s gadget.

Ransom:Win32/LockScreen.CU Summary

These modifications can be as complies with:

  • Creates RWX memory;
  • Unconventionial language used in binary resources: Russian;
  • The executable is compressed using UPX;
  • Installs itself for autorun at Windows startup;
  • Network activity detected but not expressed in API logs;
  • Attempts to block SafeBoot use by removing registry keys;
  • Anomalous binary characteristics;
  • Ciphering the papers situated on the sufferer’s hard drive — so the sufferer can no longer utilize the data;
  • Preventing regular access to the sufferer’s workstation;


The most regular channels through which Ransom:Win32/LockScreen.CU are injected are:

  • By means of phishing emails;
  • As an effect of user ending up on a resource that holds a harmful software program;

As soon as the Trojan is successfully injected, it will either cipher the information on the sufferer’s PC or stop the tool from working in a correct fashion – while additionally putting a ransom note that mentions the need for the sufferers to effect the repayment for the objective of decrypting the documents or bring back the documents system back to the first condition. In a lot of circumstances, the ransom money note will certainly turn up when the client restarts the PC after the system has currently been harmed.

Ransom:Win32/LockScreen.CU circulation networks.

In various corners of the globe, Ransom:Win32/LockScreen.CU grows by leaps as well as bounds. Nonetheless, the ransom money notes and tricks of extorting the ransom money amount might vary depending on certain neighborhood (regional) settings. The ransom notes and tricks of obtaining the ransom money quantity may differ depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In specific areas, the Trojans frequently wrongfully report having spotted some unlicensed applications allowed on the victim’s gadget. The sharp then demands the customer to pay the ransom money.

    Faulty statements about prohibited material.

    In countries where software piracy is much less prominent, this approach is not as efficient for the cyber fraudulences. Alternatively, the Ransom:Win32/LockScreen.CU popup alert might wrongly declare to be stemming from a police organization and will certainly report having situated child pornography or other illegal data on the gadget.

    Ransom:Win32/LockScreen.CU popup alert might incorrectly declare to be deriving from a legislation enforcement establishment and also will report having located youngster porn or various other illegal data on the gadget. The alert will in a similar way have a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: AD171CE3
md5: c8fcb8dcae6f7ae713cbff384b497bc9
name: C8FCB8DCAE6F7AE713CBFF384B497BC9.mlw
sha1: ec688e34fca6bf8c465d233633836c1b568d5ac2
sha256: 320c8a39266a254ecd7ed2e99e48abe288218707e76af119d1538e11d1c113c4
sha512: b8ccc899c6e76eac6fca1df629513df5e9a999089ced7ef11e2c7761a3771756de1fcf60f2d8952b49f69a9549897a4bee09d4d6d700862892fc5ebfbb7a446c
ssdeep: 12288:wfCWvFrEtC6r8Zu0HNqvMbO2iyouKqkXePukQyUoS:W9drEfr8rNqgOdkqof
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Ransom:Win32/LockScreen.CU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004bcce41 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen4.26223
Cynet Malicious (score: 100)
ALYac Gen:Variant.Symmi.31523
Cylance Unsafe
Zillya Trojan.Vishmaster.Win32.6
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
K7GW Trojan ( 004bcce41 )
Cybereason malicious.cae6f7
Cyren W32/Banker.BL.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Vishmaster.AA
Zoner Trojan.Win32.10772
APEX Malicious
Avast Win32:Ransom-NQ [Trj]
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Variant.Symmi.31523
NANO-Antivirus Trojan.Win32.TrjGen.deuqfg
ViRobot Trojan.Win32.A.Vishmaster.564224
MicroWorld-eScan Gen:Variant.Symmi.31523
Tencent Win32.Trojan.Crypt.cycy
Ad-Aware Gen:Variant.Symmi.31523
Sophos Mal/Generic-S
Comodo Packed.Win32.MUPX.Gen@24tbus
BitDefenderTheta Gen:NN.ZelphiCO.34142.ImW@aSYjBUic
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.hh
FireEye Generic.mg.c8fcb8dcae6f7ae7
Emsisoft Gen:Variant.Symmi.31523 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Generic.ajfeb
Webroot W32.Malware.Gen
Avira TR/Crypt.XPACK.Gen
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/LockScreen.CU
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Symmi.31523
AhnLab-V3 Trojan/Win32.Banload.R157507
Acronis suspicious
McAfee GenericR-DZB!C8FCB8DCAE6F
MAX malware (ai score=88)
VBA32 Hoax.Vishmaster
Panda Trj/CI.A
Yandex Trojan.GenAsa!GE5EPFGbSH4
Ikarus Trojan-Banker.Win32.Banker
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/LockScreen.AFC!tr
AVG Win32:Ransom-NQ [Trj]
Paloalto generic.ml

How to remove Ransom:Win32/LockScreen.CU virus?

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.CU 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.CU you can always ask me in the comments for getting help.

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)


  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.

Leave a Reply


This site uses Akismet to reduce spam. Learn how your comment data is processed.