Win32/TrojanDownloader.Wauchos.CA

What is Win32/TrojanDownloader.Wauchos.CA infection?

In this post you will find about the definition of Win32/TrojanDownloader.Wauchos.CA and also its adverse impact on your computer system. Such ransomware are a form of malware that is specified by online scams to demand paying the ransom money by a victim.

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In the majority of the cases, Win32/TrojanDownloader.Wauchos.CA infection will certainly advise its targets to launch funds transfer for the purpose of counteracting the changes that the Trojan infection has presented to the sufferer’s tool.

Win32/TrojanDownloader.Wauchos.CA Summary

These alterations can be as adheres to:

• 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.
• Injection (inter-process);
• Injection (Process Hollowing);
• 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;
• Performs some HTTP requests;
• Unconventionial language used in binary resources: Arabic (Algeria);
• Executed a process and injected code into it, probably while unpacking;
• Attempts to stop active services;
• 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 modify browser security settings;
• Creates a copy of itself;
• Attempts to disable UAC.

  User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

  UAC includes several technologies ¹:

  • File and egistry Virtualization;
  • Same-desktop Elevation;
  • Filtered Token;
  • User Interface Privilege Isolation;
  • Protected Mode Internet Explorer;
  • Installer Detection;
• Attempts to disable Windows Defender;
• Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
• Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
• Attempts to modify user notification settings;
• Ciphering the files situated on the victim’s hard drive — so the target can no more utilize the information;
• Preventing regular access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Similar behavior

Related domains

Win32/TrojanDownloader.Wauchos.CA

The most normal networks where Win32/TrojanDownloader.Wauchos.CA Ransomware Trojans are infused are:

• By means of phishing e-mails;
• As an effect of user winding up on a resource that organizes a destructive software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or protect against the gadget from functioning in a proper manner – while additionally placing a ransom note that points out the demand for the victims to impact the repayment for the purpose of decrypting the papers or bring back the documents system back to the first condition. In many instances, the ransom note will show up when the customer reboots the COMPUTER after the system has actually already been harmed.

Win32/TrojanDownloader.Wauchos.CA circulation networks.

In different corners of the world, Win32/TrojanDownloader.Wauchos.CA grows by jumps and also bounds. Nonetheless, the ransom notes as well as techniques of extorting the ransom money amount might differ depending on certain neighborhood (local) settings. The ransom money notes as well as tricks of extorting the ransom money quantity may differ depending on specific local (regional) setups.

As an example:

Faulty signals regarding unlicensed software application.

In specific areas, the Trojans frequently wrongfully report having detected some unlicensed applications made it possible for on the target’s device. The alert after that demands the customer to pay the ransom.

Faulty statements concerning prohibited material.

In nations where software piracy is much less prominent, this approach is not as reliable for the cyber fraudulences. Conversely, the Win32/TrojanDownloader.Wauchos.CA popup alert might wrongly assert to be originating from a police establishment as well as will certainly report having situated youngster porn or various other unlawful data on the tool.

Win32/TrojanDownloader.Wauchos.CA popup alert may wrongly claim to be deriving from a legislation enforcement institution and will report having situated youngster pornography or various other prohibited information on the device. The alert will similarly contain a demand for the user to pay the ransom.

Technical details

File Info:
crc32: B289C673
md5: f24f0e0a29809d687d483cb1baa06840
name: F24F0E0A29809D687D483CB1BAA06840.mlw
sha1: 5c0fb4aa98c3e1df306f9a8435f6577dad4d417d
sha256: a4fa6dd336f38ff96338dbfcc140b6d5c9bdc7630a48e1450e45e7b64357d6b4
sha512: a08d82088aa0a7ccdbffcb434bca13c8a6a278baaed2d658998ecda6fef6c432f8e986ec0d4a92520986555dd2a26fa58d9b113455060115b6a02cbf83210bdc
ssdeep: 3072:kzFnRfCiIcXmOw6hT15jVIByzl5ZE5Ocr41zTJeVa:kzFRfxnhjV1zXZE5Ocr2
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
Translation: 0x1400 0x04b0
LegalCopyright: GalloE
InternalName: Farcial0
FileVersion: 2.00
CompanyName: GalloA
LegalTrademarks: GalloE
ProductName: Stdvis
ProductVersion: 2.00
FileDescription: GalloE
OriginalFilename: Farcial0.exe

Win32/TrojanDownloader.Wauchos.CA also known as:

How to remove Win32/TrojanDownloader.Wauchos.CA virus?

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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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.

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.

Press “Install” button.

Once installed, Anti-Malware will automatically run.

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/TrojanDownloader.Wauchos.CA 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.

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.

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If the guide doesn’t help you to remove Win32/TrojanDownloader.Wauchos.CA you can always ask me in the comments for getting help.

1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
3. More information about GridinSoft products: https://gridinsoft.com/comparison