Win32/Filecoder.CTBLocker.C

What is Win32/Filecoder.CTBLocker.C infection?

In this post you will find concerning the interpretation of Win32/Filecoder.CTBLocker.C as well as its negative influence on your computer. Such ransomware are a type of malware that is clarified by online scams to demand paying the ransom money by a victim.

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Most of the instances, Win32/Filecoder.CTBLocker.C ransomware will certainly instruct its victims to launch funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually introduced to the target’s tool.

Win32/Filecoder.CTBLocker.C Summary

These modifications 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);
• At least one process apparently crashed during execution;
• Injection with CreateRemoteThread in a remote process;
• 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.
• Expresses interest in specific running processes;
• 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.

• The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
• Executed a process and injected code into it, probably while unpacking;
• Attempts to restart the guest VM;
• Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
• 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
• 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.
• Creates a copy of itself;
• Creates a known CTB-Locker ransomware decryption instruction / key file.;
• 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.
• Ciphering the papers found on the victim’s hard drive — so the target can no longer use the information;
• 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.

Win32/Filecoder.CTBLocker.C

The most typical networks where Win32/Filecoder.CTBLocker.C Trojans are infused are:

• By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
• As a consequence of user ending up on a source that holds a harmful software application;

As soon as the Trojan is successfully infused, it will either cipher the data on the target’s computer or avoid the gadget from functioning in a correct manner – while additionally placing a ransom money note that states the requirement for the targets to effect the payment for the function of decrypting the files or recovering the data system back to the preliminary problem. In most instances, the ransom note will certainly come up when the customer reboots the COMPUTER after the system has currently been damaged.

Win32/Filecoder.CTBLocker.C distribution channels.

In different edges of the world, Win32/Filecoder.CTBLocker.C expands by jumps and bounds. Nonetheless, the ransom money notes as well as tricks of obtaining the ransom money quantity might vary relying on specific regional (local) setups. The ransom money notes and techniques of obtaining the ransom money quantity may differ depending on certain neighborhood (local) setups.

For instance:

Faulty notifies about unlicensed software.

In particular locations, the Trojans usually wrongfully report having discovered some unlicensed applications enabled on the target’s device. The alert after that demands the user to pay the ransom money.

Faulty declarations concerning illegal content.

In nations where software application piracy is less prominent, this technique is not as efficient for the cyber fraudulences. Additionally, the Win32/Filecoder.CTBLocker.C popup alert may wrongly assert to be deriving from a police establishment and also will report having located kid porn or various other prohibited information on the device.

Win32/Filecoder.CTBLocker.C popup alert may wrongly assert to be acquiring from a regulation enforcement establishment and will report having situated kid pornography or other unlawful data on the device. The alert will likewise consist of a demand for the individual to pay the ransom.

Technical details

File Info:
crc32: C2062498
md5: c7f7654d919793693b9d6b17d3f71bd5
name: C7F7654D919793693B9D6B17D3F71BD5.mlw
sha1: 343ad4283d58ba22fc8e5b51464d599bc1c0e722
sha256: 8cf5d59c295d2c69cd27d844638371c9a3919b87592c97ebfb627088be653cba
sha512: 584bbb19946f07bee57ae377903a636645ec3bab35e74ac374eb0a6ee4a7682ce54746624b33ba7c66904e1ecae5ee75c1e6ec7ddd8b637ab1a54d80838d1b79
ssdeep: 12288:nEjGjqxbj9PtVN9tnhv1QWJre60u0QK/78xPKnR9g0Y6siaFE6JJwHWvV9WZ9H:EaGRj9V7R6Ge6bFK/AyR9PYLQs2WvVcl
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
Translation: 0x0409 0x04b0
InternalName: Brovx433gten2
FileVersion: 1.00
CompanyName: Halon Krusk
Comments: Borrelia
ProductName: Slow5
ProductVersion: 1.00
FileDescription: Cosigning
OriginalFilename: Brovx433gten2.exe

Win32/Filecoder.CTBLocker.C also known as:

How to remove Win32/Filecoder.CTBLocker.C 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.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Filecoder.CTBLocker.C 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/Filecoder.CTBLocker.C you can always ask me in the comments for getting help.

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