Worm:Win32/Mira.A

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

What is Worm:Win32/Mira.A infection?

In this short article you will find regarding the definition of Worm:Win32/Mira.A and also its adverse effect on your computer. Such ransomware are a kind of malware that is specified by online scams to demand paying the ransom money by a sufferer.

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In the majority of the situations, Worm:Win32/Mira.A ransomware will certainly instruct its sufferers to start funds transfer for the function of neutralizing the changes that the Trojan infection has actually introduced to the target’s gadget.

Worm:Win32/Mira.A Summary

These modifications can be as complies with:

  • 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.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • 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 execute a powershell command with suspicious parameter/s;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s disk drive — so the target can no more make use of the data;
  • Preventing regular accessibility to the victim’s workstation;

Worm:Win32/Mira.A

The most typical channels where Worm:Win32/Mira.A Trojans are injected are:

  • By ways of phishing emails;
  • As a consequence of individual ending up on a source that holds a destructive software program;

As soon as the Trojan is effectively infused, it will either cipher the data on the sufferer’s computer or stop the device from functioning in an appropriate fashion – while likewise putting a ransom note that points out the need for the targets to effect the payment for the function of decrypting the documents or restoring the file system back to the preliminary condition. In most instances, the ransom money note will certainly come up when the client restarts the PC after the system has actually currently been harmed.

Worm:Win32/Mira.A circulation networks.

In different edges of the world, Worm:Win32/Mira.A grows by leaps and also bounds. Nonetheless, the ransom notes as well as techniques of obtaining the ransom money amount may differ relying on specific local (regional) setups. The ransom notes as well as tricks of extorting the ransom quantity may differ depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s gadget. The alert after that demands the user to pay the ransom.

    Faulty declarations regarding unlawful material.

    In countries where software program piracy is much less preferred, this approach is not as reliable for the cyber scams. Additionally, the Worm:Win32/Mira.A popup alert might falsely claim to be stemming from a police organization and will report having situated kid pornography or various other prohibited information on the device.

    Worm:Win32/Mira.A popup alert might falsely claim to be obtaining from a law enforcement organization as well as will report having situated youngster pornography or various other unlawful information on the tool. The alert will in a similar way have a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: D45279D9
md5: 6f8bff1a961b72e687d100eacc2c19f7
name: 6F8BFF1A961B72E687D100EACC2C19F7.mlw
sha1: e0f9d9024681f024a51f7de93f9fe98085064e31
sha256: 88832b61d1b03816bf7b79b31f48b7afe8fdc255529d1f4eee619dcdec88e62b
sha512: ac6e9d610244ec7d2d30f402bc517e89d0e1a3c9624ee1e29f624ed82156636f6970d24b9881026530176ab621ca0600ee8b35a58e930192513e184b852ce0d3
ssdeep: 6144:f8dNXSEehucqJLNswQv/YkG57aK2RLWCxCtR7bpHHEQHvBZsUDE7aQ0QBjfH2wun:8/ZJLuMkG579GLWCMtJ+QHvv7CeULa0O
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Worm:Win32/Mira.A also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 004fdf181 )
CynetMalicious (score: 100)
ALYacDropped:Trojan.GenericKDZ.69837
CylanceUnsafe
SangforTrojan.Generic-Script.Save.7b7a01dd
CrowdStrikewin/malicious_confidence_70% (W)
AlibabaRansom:Win32/Blocker.32d45152
K7GWTrojan ( 004fdf181 )
Cybereasonmalicious.a961b7
CyrenPSH/Dropper.A
SymantecML.Attribute.HighConfidence
ESET-NOD32PowerShell/TrojanDropper.Agent.D
APEXMalicious
AvastNSIS:Downloader-ACW [Trj]
KasperskyTrojan-Ransom.Win32.Blocker.ifpx
BitDefenderDropped:Trojan.GenericKDZ.69837
MicroWorld-eScanDropped:Trojan.GenericKDZ.69837
TencentWin32.Trojan.Blocker.Wskp
Ad-AwareDropped:Trojan.GenericKDZ.69837
SophosMal/Generic-S
ComodoTrojWare.Script.TrojanDropper.Agent.D@7l67fr
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Dropper.hh
FireEyeGeneric.mg.6f8bff1a961b72e6
EmsisoftDropped:Trojan.GenericKDZ.69837 (B)
SentinelOneStatic AI – Malicious PE
AviraHEUR/AGEN.1116910
KingsoftWin32.Troj.GenericKD.v.(kcloud)
MicrosoftWorm:Win32/Mira.A
ArcabitTrojan.Generic.D110CD
AegisLabTrojan.Win32.Blocker.j!c
GDataPowerShell.Trojan-Dropper.Agent.AIT
AhnLab-V3Trojan/Win32.Agent.R348735
McAfeeArtemis!6F8BFF1A961B
MAXmalware (ai score=100)
VBA32Hoax.Blocker
MalwarebytesAllaple.Worm.DDoS.DDS
PandaTrj/CI.A
RisingWorm.Allaple/VBS!1.BD75 (CLASSIC)
FortinetVBS/PowerShell.D!tr
AVGNSIS:Downloader-ACW [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Blocker.HoMASOgA

How to remove Worm:Win32/Mira.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 Worm:Win32/Mira.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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If the guide doesn’t help you to remove Worm:Win32/Mira.A 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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