Trojan-Ransom.Win32.Crusis.aat

What is Trojan-Ransom.Win32.Crusis.aat infection?

In this article you will certainly discover regarding the meaning of Trojan-Ransom.Win32.Crusis.aat as well as its unfavorable influence on your computer. Such ransomware are a type of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a sufferer.

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In the majority of the situations, Trojan-Ransom.Win32.Crusis.aat ransomware will instruct its victims to launch funds move for the function of reducing the effects of the changes that the Trojan infection has actually presented to the victim’s gadget.

Trojan-Ransom.Win32.Crusis.aat Summary

These adjustments 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.
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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 suspend Cuckoo threads to prevent logging of malicious activity;
  • Attempts to delete volume shadow copies;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • 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
  • Stores JavaScript or a script command in the registry, likely for persistence or configuration;
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the sufferer’s disk drive — so the victim can no more make use of the information;
  • Preventing normal accessibility 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-Ransom.Win32.Crusis.aat

One of the most normal networks where Trojan-Ransom.Win32.Crusis.aat are injected are:

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

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the sufferer’s computer or protect against the gadget from functioning in a proper manner – while also putting a ransom money note that discusses the requirement for the targets to impact the repayment for the objective of decrypting the documents or bring back the documents system back to the initial problem. In a lot of circumstances, the ransom note will show up when the customer restarts the COMPUTER after the system has actually currently been harmed.

Trojan-Ransom.Win32.Crusis.aat circulation networks.

In various edges of the globe, Trojan-Ransom.Win32.Crusis.aat grows by leaps and also bounds. Nevertheless, the ransom money notes as well as tricks of extorting the ransom amount may differ depending on particular neighborhood (local) setups. The ransom notes and tricks of extorting the ransom quantity may differ depending on specific local (regional) settings.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software application.

    In particular areas, the Trojans often wrongfully report having actually found some unlicensed applications allowed on the target’s device. The sharp after that requires the individual to pay the ransom money.

    Faulty statements regarding prohibited web content.

    In countries where software program piracy is less prominent, this method is not as reliable for the cyber scams. Alternatively, the Trojan-Ransom.Win32.Crusis.aat popup alert might incorrectly assert to be originating from a police establishment and also will report having situated child porn or various other unlawful information on the tool.

    Trojan-Ransom.Win32.Crusis.aat popup alert may falsely declare to be deriving from a regulation enforcement organization as well as will certainly report having located youngster porn or various other illegal data on the device. The alert will in a similar way include a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 6BF9BA33
md5: 8e62879baaca1068616f5f9d263e2741
name: 8E62879BAACA1068616F5F9D263E2741.mlw
sha1: 6a9e191f1e369e274c07be639939154cf2640d71
sha256: 9d816f50582c8409344515c32f2357fbe845e252264f4bd3db332b5fc9cfacf0
sha512: 59d8499929e0f5fe70502ffc5b0e7a037280824f9d0c3686703ebf23dbaa72eb9fb61550d7381d8207be04e12b62b62f0e8713d5336952b5d5dd279d43419d8c
ssdeep: 6144:TRm1kvJ7/JmkvrAe/rQHv6puIFEGKvYexONWEIb782osVy/VXyuO3dew:ToyJmH0rQHvhQavYekNWEuosVaXy13
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

LegalCopyright: My Name
InternalName: my_app
FileVersion: 1.0
CompanyName: My Company Name
ProductName: My App
ProductVersion: 1.0
FileDescription: My excellent application
OriginalFilename: my_app.exe
Translation: 0x0809 0x04e4

Trojan-Ransom.Win32.Crusis.aat also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0050e5c01 )
Cynet Malicious (score: 85)
ALYac Trojan.GenericKD.5218615
Cylance Unsafe
Zillya Trojan.Crusis.Win32.386
Sangfor Trojan.Win32.GenericKD.5
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Crusis.73d52c50
K7GW Trojan ( 0050e5c01 )
Cybereason malicious.baaca1
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.FSNU
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Crusis.aat
BitDefender Trojan.GenericKD.5218615
NANO-Antivirus Trojan.Win32.Crusis.ephrkc
MicroWorld-eScan Trojan.GenericKD.5218615
Tencent Win32.Trojan.Crusis.Eddy
Ad-Aware Trojan.GenericKD.5218615
Sophos Mal/Generic-S
Comodo Malware@#150hh82wgnwep
BitDefenderTheta Gen:NN.ZexaF.34628.vO3@auo29hmi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Crusis.R002C0GKC20
McAfee-GW-Edition BehavesLike.Win32.Injector.fc
FireEye Generic.mg.8e62879baaca1068
Emsisoft Trojan.GenericKD.5218615 (B)
Avira HEUR/AGEN.1101854
Antiy-AVL Trojan[Ransom]/Win32.Crusis
Microsoft Ransom:Win32/Wadhrama
GData Trojan.GenericKD.5218615
McAfee Artemis!8E62879BAACA
MAX malware (ai score=89)
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_Crusis.R002C0GKC20
Rising Ransom.Wadhrama!8.E401 (CLOUD)
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.FSNU!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/Ransom.CrySiS.HgIASOkA

How to remove Trojan-Ransom.Win32.Crusis.aat ransomware?

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 Trojan-Ransom.Win32.Crusis.aat 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 Trojan-Ransom.Win32.Crusis.aat 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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