SIGNBT is a highly elusive malware known for its sophisticated infiltration methods, including exploiting software vulnerabilities and employing “DLL side-loading.” This threat is adept at spreading through phishing emails, drive-by downloads, and social engineering, making it a pervasive risk.
Once inside a system, SIGNBT establishes a persistent foothold, enabling malicious actors to maintain control, exfiltrate data, and execute various commands. Its ability to primarily operate in memory without writing to the disk underscores its stealth. This malware’s diverse capabilities pose a significant threat to cybersecurity.
SIGNBT Malware Overview
The SIGNBT malware, utilized by threat actors, stands out for its advanced capabilities and unwavering presence in specific cyberattacks. This malware empowers threat actors to infiltrate and maintain control over compromised systems through a multifaceted attack strategy and a wide array of backdoor functions. SIGNBT exhibits remarkable persistence on compromised systems, achieving this through several techniques such as file creation, registry entry manipulation for malicious side-loading, and auto execution of supplementary payloads. This persistence safeguards the threat actor’s control, even in the face of initial access disruption, thus extending the attack’s duration and reach.
SIGNBT Loader on VirusTotal page
| Name | SIGNBT |
| Threat Type | Malware Loader |
| Detection | Microsoft (Trojan:Win32/Trickbot!mclg) |
| Symptoms | SIGNBT is designed to stealthily infiltrate the victim’s computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine. |
| Similar Behavior | StripedFly, SmokeLoader |
| Damage | Stolen passwords and banking information, identity theft, the victim’s computer added to a botnet. |
| Fix Tool | See If Your System Has Been Affected by SIGNBT Virus |
Technical Analysis of SIGNBT
SIGNBT employs a multi-step process to generate a 24-byte value, a crucial element in its communication with the C2 server. This intricate approach makes it formidable to detect and analyze, highlighting its sophistication and evasion efforts. The malware boasts an extensive set of backdoor functionalities, offering a diverse array of commands for threat actors. This allows them to gather system information, manipulate processes, execute files, perform network commands, and more.
Furthermore, SIGNBT excels in executing primarily in memory, avoiding disk writes, which amplifies its stealth and persistence on victim machines, emphasizing its advanced nature. Notably, cybercriminals have leveraged SIGNBT to introduce additional malicious software into computers, with these new malware variants primarily operating in a computer’s memory and abstaining from hard disk storage.
Spreading methods
SIGNBT gains access to your computer through a series of steps initiated by cyber attackers. They begin by identifying weaknesses in your software. Once these vulnerabilities are identified, they employ a covert method known as “DLL side-loading” to introduce and activate the SIGNBT malware on your system. DLL side-loading takes advantage of the way applications load specific files, allowing the malware to operate stealthily and evade easy detection.
Also SIGNBT infiltrates a computer throug:
- Hackers may distribute SIGNBT through phishing emails that contain malicious attachments or links. When victims click on these links or open attachments, the malware can be delivered to their systems.
- Social engineering tactics induce a person to download and execute malware. This can involve deceptive messages, fake software downloads, or other forms of manipulation.
- Malware masquerading as a legitimate software update.. Unsuspecting users may download and install what they believe to be a genuine update, but it is actually the malware.
- Illegitimate software downloads and cracking tools often contain malware. Users who engage in software piracy or use cracking tools are at risk of inadvertently installing SIGNBT.
How to remove the SIGNBT Loader from my PC?
The most effective approach to malware removal from your device involves utilizing anti-malware software. I recommend GridinSoft Anti-Malware as it offers a rapid, lightweight, and highly efficient security solution capable of effectively thwarting a wide range of threats, including SIGNBT Loader. You can explore its capabilities during a 6-day free trial period.
While manual removal of the threat is technically possible, I strongly discourage this method. In its pursuit of establishing persistence, Malware generates numerous instances of itself, making it exceedingly difficult to trace all its components manually. Consequently, manual removal can be time-consuming and often yield minimal to no results. Below, I have assembled a guide outlining the most effective removal practices for SIGNBT Loader.
Remove SIGNBT with Gridinsoft Anti-Malware
We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Stealers as shown from our tests with the software, and we assure you that it can remove SIGNBT as well as other malware hiding on your computer.
To use Gridinsoft for remove malicious threats, follow the steps below:
1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.
2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.
3.Follow the installation setup wizard's instructions diligently.
4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.
Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.
5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.
6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.
8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.
Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.
Trojan Killer for “SIGNBT” removal on locked PC
In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.
There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.
Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.
Step 1: Download & Install Trojan Killer on a Clean Computer:
1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.
2. Insert a USB flash drive into this computer.
3. Install Trojan Killer to the "removable drive" following the on-screen instructions.
4. Once the installation is complete, launch Trojan Killer.
Step 2: Update Signature Databases:
5. After launching Trojan Killer, ensure that your computer is connected to the Internet.
6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.
Step 3: Scan the Infected PC:
7. Safely eject the USB flash drive from the clean computer.
8. Boot the infected computer to the Safe Mode.
9. Insert the USB flash drive.
10. Run tk.exe
11. Once the program is open, click on "Full Scan" to begin the malware scanning process.
Step 4: Remove Found Threats:
12. After the scan is complete, Trojan Killer will display a list of detected threats.
13. Click on "Cure PC!" to remove the identified malware from the infected PC.
14. Follow any additional on-screen prompts to complete the removal process.
Step 5: Restart Your Computer:
15. Once the threats are removed, click on "Restart PC" to reboot your computer.
16. Remove the USB flash drive from the infected computer.
Congratulations on effectively removing SIGNBT and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.
Frequently Asked Questions (FAQ)
Reformatting your storage device should only be considered as a last resort for removing SIGNBT malware. Prior to taking such drastic action, it is advisable to perform a comprehensive scan using trustworthy antivirus or anti-malware software.
Malware poses a significant risk to the security and privacy of sensitive information, potentially leading to identity theft, financial loss, and unauthorized access to personal accounts. Furthermore, it can disrupt the normal operation of a system, causing performance issues, system crashes, and data corruption.
The purpose of SIGNBT is to enable remote access and control of compromised devices. It allows threat actors to perform various malicious activities, such as unauthorized access, data theft, system manipulation, and disabling security measures, potentially causing significant harm to individuals and organizations.
Gridinsoft Anti-Malware has the ability to identify and eliminate most malware infections. Nevertheless, it is crucial to recognize that sophisticated malware can remain hidden deep within the system. Consequently, conducting a complete system scan is imperative to detect and eradicate malware.
How to Remove SIGNBT Malware
Name: SIGNBT
Description: SIGNBT, a formidable malware strain, is distinguished by its intricate infiltration methods and extensive range of capabilities. It spreads through the exploitation of software vulnerabilities and cleverly employs "DLL side-loading" to gain access to systems without easy detection. It also lurks within phishing emails, drive-by downloads, and leverages social engineering tactics. Once inside, SIGNBT establishes a tenacious presence, granting cybercriminals the ability to maintain control, exfiltrate data, and execute diverse commands. Remarkably, it operates mainly in memory, avoiding disk writes, enhancing its stealth. SIGNBT's versatile capabilities make it a significant cybersecurity concern, underscoring the need for robust defense mechanisms.
Operating System: Windows
Application Category: Malware
