Trojan:Win32/CryptoJacker.A

What is Trojan:Win32/CryptoJacker.A infection?

In this post you will certainly locate about the meaning of Trojan:Win32/CryptoJacker.A and its negative influence on your computer. Such ransomware are a form of malware that is specified by on the internet fraudulences to require paying the ransom money by a victim.

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Most of the situations, Trojan:Win32/CryptoJacker.A virus will certainly instruct its targets to initiate funds move for the objective of counteracting the changes that the Trojan infection has introduced to the sufferer’s tool.

Trojan:Win32/CryptoJacker.A Summary

These modifications can be as adheres to:

  • 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.
  • Unconventionial language used in binary resources: Russian;
  • 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
  • Ciphering the documents located on the victim’s hard drive — so the target can no more utilize the data;
  • Preventing regular access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Trojan:Win32/CryptoJacker.A

The most normal networks whereby Trojan:Win32/CryptoJacker.A Trojans are infused are:

  • By ways of phishing e-mails;
  • As an effect of user winding up on a source that holds a malicious software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s PC or prevent the tool from operating in an appropriate manner – while likewise positioning a ransom money note that discusses the need for the victims to impact the payment for the purpose of decrypting the files or bring back the data system back to the initial problem. In a lot of instances, the ransom note will certainly come up when the client restarts the PC after the system has already been damaged.

Trojan:Win32/CryptoJacker.A circulation channels.

In different corners of the globe, Trojan:Win32/CryptoJacker.A expands by leaps and bounds. However, the ransom notes as well as techniques of extorting the ransom money quantity may differ depending on specific regional (regional) settings. The ransom notes and tricks of extorting the ransom money amount may vary depending on certain regional (local) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software application.

    In certain locations, the Trojans usually wrongfully report having found some unlicensed applications enabled on the sufferer’s gadget. The sharp after that requires the individual to pay the ransom.

    Faulty declarations about unlawful material.

    In countries where software piracy is much less preferred, this approach is not as effective for the cyber fraudulences. Alternatively, the Trojan:Win32/CryptoJacker.A popup alert might falsely assert to be originating from a police organization and will report having situated youngster porn or other unlawful data on the device.

    Trojan:Win32/CryptoJacker.A popup alert may incorrectly declare to be acquiring from a law enforcement organization as well as will certainly report having situated kid porn or other unlawful information on the gadget. The alert will likewise consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 106E355F
md5: 22a259eda9ca0bfa8334f16577817bb2
name: 22A259EDA9CA0BFA8334F16577817BB2.mlw
sha1: 855650d2514c5ce42cc96734193d1221400950c5
sha256: 7c256cff325ddc9ead8360125843dd136ed5f6e9a77d31484f17fb784c6299c7
sha512: 95b17b5d20bfce7152c33501768ab35524b73822cbd0bc9a38049d94e2e09cdc2af1cb470df2c76f6888415ece4627a0b97f1d60e5832ca47b3f52c64657b4c1
ssdeep: 24576:KmoO8itDsZhdIVUpd6JtAxBIoHhZiLgBTfcRytyXa8oipgN+5q:BOZfKUpQJCBjhZisRffyqHAgNH
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/CryptoJacker.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005239281 )
DrWeb Trojan.ClipSpy.27
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.30426750
Cylance Unsafe
Sangfor Trojan.Win32.Agent.aeio
K7GW Trojan ( 005239281 )
Cybereason malicious.da9ca0
Symantec Ransom.Wannacry
ESET-NOD32 a variant of Win32/ClipBanker.CF
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Dropper.DarkKomet-9370806-0
Kaspersky Trojan-Banker.Win32.Agent.aeio
BitDefender Trojan.GenericKD.30426750
NANO-Antivirus Trojan.Win32.ClipSpy.eyzixz
MicroWorld-eScan Trojan.GenericKD.30426750
Tencent Win32.Trojan.Generic.Hqlm
Ad-Aware Trojan.GenericKD.30426750
Sophos Mal/Generic-S
Comodo Malware@#3ajk473ugdtid
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.tc
FireEye Generic.mg.22a259eda9ca0bfa
Emsisoft Trojan.GenericKD.30426750 (B)
Avira TR/AD.CryptoJacker.shppe
Microsoft Trojan:Win32/CryptoJacker.A
Arcabit Trojan.Generic.D1D0467E
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.GenericKD.30426750
McAfee Artemis!22A259EDA9CA
MAX malware (ai score=94)
Malwarebytes Malware.AI.4071657338
Panda Trj/CI.A
Ikarus Trojan.Win32.Clipbanker
Fortinet W32/Generic.AC.403b7c!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/TrojanPSW.Generic.HgIASOkA

How to remove Trojan:Win32/CryptoJacker.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:Win32/CryptoJacker.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 Trojan:Win32/CryptoJacker.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/products/

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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