Trojan.HappyLocker (A)

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

What is Trojan.HappyLocker (A) infection?

In this post you will locate regarding the interpretation of Trojan.HappyLocker (A) and also its adverse influence on your computer system. Such ransomware are a type of malware that is clarified by on-line frauds to demand paying the ransom money by a target.

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Most of the situations, Trojan.HappyLocker (A) ransomware will instruct its victims to initiate funds transfer for the purpose of counteracting the modifications that the Trojan infection has presented to the sufferer’s gadget.

Trojan.HappyLocker (A) Summary

These adjustments can be as adheres to:

  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Ciphering the records located on the target’s hard disk drive — so the target can no longer utilize the data;
  • Preventing regular accessibility to the victim’s workstation;

Trojan.HappyLocker (A)

The most common channels where Trojan.HappyLocker (A) Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of customer ending up on a resource that hosts a destructive software;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the target’s PC or avoid the tool from working in an appropriate way – while likewise positioning a ransom note that states the need for the victims to impact the payment for the function of decrypting the papers or bring back the file system back to the first condition. In most instances, the ransom note will turn up when the client reboots the COMPUTER after the system has already been damaged.

Trojan.HappyLocker (A) distribution networks.

In various edges of the world, Trojan.HappyLocker (A) grows by leaps and bounds. Nevertheless, the ransom notes and techniques of extorting the ransom amount might vary depending on particular regional (regional) settings. The ransom money notes and tricks of obtaining the ransom quantity may differ depending on specific neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty informs about unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having detected some unlicensed applications allowed on the sufferer’s tool. The sharp after that requires the customer to pay the ransom.

    Faulty declarations regarding unlawful content.

    In nations where software application piracy is much less popular, this method is not as effective for the cyber fraudulences. Additionally, the Trojan.HappyLocker (A) popup alert may incorrectly claim to be originating from a law enforcement establishment and also will report having located child porn or various other prohibited information on the gadget.

    Trojan.HappyLocker (A) popup alert may wrongly declare to be deriving from a law enforcement institution and will certainly report having located child porn or various other unlawful data on the gadget. The alert will similarly have a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 621F6DAC
md5: 1dc667b0f50dee338516fd554babbf71
name: 1DC667B0F50DEE338516FD554BABBF71.mlw
sha1: f5576dce89e1c68d53e2eb37058cde6c85bc40ce
sha256: 48557ea3ff4aa966f3bd51415c621a35dffb5e4a2f400200972948e0353c74cb
sha512: 9cf83e98261143a4a368b82680bb4bc07a8dad8c8cb2c4b6e98244db2327d1218e3c9c14d502ae17f1065e52f3adbf68610132344bc700783fabd43490ce63fd
ssdeep: 6144:f+4/E4VZSE0aj1uLZD1B0gI5ewbIR/7cUPx:x/EOAaj1YB0gI5ewbqXx
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2016
Assembly Version:
InternalName: happylocker.exe
ProductName: happylocker
FileDescription: happylocker
OriginalFilename: happylocker.exe

Trojan.HappyLocker (A) also known as:

GridinSoft Trojan.Ransom.Gen
ALYac Trojan.GenericKD.30666249
Cylance Unsafe
Sangfor Trojan.Win32.Malware.gen
CrowdStrike win/malicious_confidence_80% (W)
Alibaba Trojan:Application/HappyLocker.ea83c4a2
Cybereason malicious.0f50de
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Malware-gen
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Trojan.GenericKD.30666249
MicroWorld-eScan Trojan.GenericKD.30666249
Ad-Aware Trojan.GenericKD.30666249
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZemsilF.34692.Ym0@aem8Zhi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HappyLocker.A
McAfee-GW-Edition Artemis!Trojan
FireEye Trojan.GenericKD.30666249
Emsisoft Trojan.HappyLocker (A)
SentinelOne Static AI – Suspicious PE
Webroot W32/64.Trojan.Ransom.Happylocke
Microsoft Trojan:Win32/AgentTesla!ml
Arcabit Trojan.Generic.D1D3EE09
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm UDS:DangerousObject.Multi.Generic
GData Trojan.GenericKD.30666249
McAfee Artemis!1DC667B0F50D
MAX malware (ai score=99)
VBA32 Trojan.Zpevdo
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_HappyLocker.A
Rising Trojan.Zpevdo!8.F912 (CLOUD)
Ikarus Trojan-Ransom.FileCrypter
MaxSecure Trojan.Malware.300983.susgen
AVG Win32:Malware-gen

How to remove Trojan.HappyLocker (A) 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 Trojan.HappyLocker (A) 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.HappyLocker (A) you can always ask me in the comments for getting help.

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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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