Trojan.Downloader.Agent.NOB
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 80 % (High) |
| Infected Computers: | 17 |
| First Seen: | July 3, 2023 |
| Last Seen: | December 18, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.Downloader.Agent.NOB on your system indicates a potential security threat. This type of malware is designed to download and install additional malicious software on your computer, which can lead to a range of problems, including data theft, system crashes, and compromised security. In this report, we will provide an overview of what Trojan.Downloader.Agent.NOB is, how it operates, and the steps you can take to remove it from your system.
Table of Contents
What Is Trojan.Downloader.Agent.NOB?
Trojan.Downloader.Agent.NOB is a type of Trojan horse malware that is designed to download and install additional malicious software on your computer. The name "Trojan" refers to the fact that this type of malware disguises itself as a legitimate program or file, allowing it to evade detection and gain access to your system. The "Downloader" part of the name indicates that this malware is capable of downloading and installing additional malicious software, which can lead to a range of problems.
How Trojan.Downloader.Agent.NOB Operates
Trojan.Downloader.Agent.NOB operates by exploiting vulnerabilities in your system or tricking you into downloading and installing it. Once installed, it can download and install additional malicious software, including other Trojans, spyware, and adware. This malware can also communicate with its creators, allowing them to remotely control your system and steal your personal data. Trojan.Downloader.Agent.NOB can be spread through a range of means, including infected email attachments, malicious websites, and infected software downloads.
Symptoms of Infection
The symptoms of a Trojan.Downloader.Agent.NOB infection can vary, but common signs include slow system performance, pop-up ads, and unexpected changes to your system settings. You may also notice that your system is crashing or freezing frequently, or that your personal data is being stolen. If you suspect that your system has been infected with Trojan.Downloader.Agent.NOB, it is essential to take immediate action to remove it.
How to Remove Trojan.Downloader.Agent.NOB
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
- Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove Trojan.Downloader.Agent.NOB and any other malicious software.
- Uninstall any suspicious programs that may be related to the malware, and be cautious when installing new software to avoid reinfecting your system.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your system and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.
Conclusion
In conclusion, Trojan.Downloader.Agent.NOB is a serious security threat that can cause significant problems for your system and your personal data. By understanding how this malware operates and taking the steps outlined in this report, you can remove it from your system and protect yourself from future infections. Remember to always be cautious when downloading and installing software, and to keep your anti-malware tools up to date to ensure that you are protected from the latest threats.
Analysis Report
General information
| Family Name: | Trojan.Downloader.Agent.NOB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
fcd08b419a14c6b4da9b73114aaefc44
SHA1:
e681a962b207162c27fb34b82ff7117802a836f4
SHA256:
C1E12E669E158C30F649C19135119B10761602044181395C775104FB68C53E98
File Size:
189.95 KB, 189952 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File is 64-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- No Version Info
- x64
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 509 |
|---|---|
| Potentially Malicious Blocks: | 2 |
| Whitelisted Blocks: | 498 |
| Unknown Blocks: | 9 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- Emotet.FE
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Syscall Use |
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