Trojan.Agent.Gen.FIR
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: | 1 |
| First Seen: | September 12, 2026 |
| Last Seen: | October 12, 2026 |
| OS(es) Affected: | Windows |
Trojan.Agent.Gen.FIR is a Windows-based Trojan classified as a high-risk threat, carrying a danger rating of 8 out of 10. It is designed to infiltrate a computer quietly, disguise itself as a legitimate process, and carry out malicious actions without the user's knowledge or consent. Like most Trojans, it does not self-replicate but instead relies on deception and stealth to gain a foothold on a victim's system.
Table of Contents
What Trojan.Agent.Gen.FIR Does
Once active, Trojan.Agent.Gen.FIR runs silently in the background, often disguising itself with file details that mimic legitimate software, such as naming itself as an "Updater" or "update installer" component and attaching a fake company name to appear trustworthy. This disguise is intended to help it avoid detection by the user and blend in among normal system files. Behind this facade, the Trojan can perform a range of harmful functions, and in many cases it is built to give attackers remote access or control over the infected machine. This can allow cybercriminals to execute additional malicious code, manipulate system settings, or use the compromised computer as a launching point for further attacks.
How It Usually Gets Onto Computers
Trojan.Agent.Gen.FIR typically spreads through deceptive methods common to this category of malware. It often exploits unpatched system vulnerabilities and security flaws to install itself without triggering obvious warnings. It can also be bundled with software downloaded from untrustworthy or malicious websites, or delivered as an attachment in phishing emails. These attachments are frequently disguised with familiar-looking file extensions, such as .exe, .pif, .avi, or even .jpg, to trick users into opening them. Because the Trojan is not digitally signed and shows no legitimate security verification, it relies heavily on tricking the victim into executing it manually.
Risks for the User
The presence of a Trojan like this on a system poses serious risks. Such threats commonly aim to gain extensive control over an infected device, which can lead to deletion or corruption of files, theft of saved passwords and other sensitive data, and unauthorized changes to system settings. Some variants also monitor user activity, potentially capturing keystrokes or browsing habits. Given its capabilities, this Trojan could be used to facilitate identity theft, financial fraud, or further malware infections on the compromised machine.
Signs of Infection
Because Trojans are built for stealth, infections are not always obvious. However, users may notice warning signs such as:
- Unexpected slowdowns or unusual CPU and memory usage
- Unfamiliar processes running in Task Manager, especially ones mimicking legitimate updater or installer tools
- Unexplained changes to system or browser settings
- Unusual network activity or data usage
- Security software being disabled or failing to update properly
How to Stay Protected
To reduce the risk of infection, users should avoid opening email attachments from unknown or unverified senders, especially executable files disguised as media or document files. Keeping the operating system and all installed software fully updated helps close the security vulnerabilities that Trojans like this often exploit. Downloading software only from official or reputable sources, avoiding pirated or cracked applications, and maintaining regular backups of important data are also strong defensive habits. Running reputable, up-to-date security software and performing regular system scans can help detect and remove threats like Trojan.Agent.Gen.FIR before they cause significant harm.
Analysis Report
General information
| Family Name: | Trojan.Agent.Gen.FIR |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
8fe6836ab30878fd642be342e9012f66
SHA1:
435fe740a945cead7e5f8230b44c147fd5648029
SHA256:
F1D072E52399CCE5E9CD85B16F50FE7C16D207E38B678146C2880BFF71C7629D
File Size:
308.74 KB, 308736 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have security information
- File has exports table
- 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)
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Comments | Software update installer |
| Company Name | DeepIsle Valley Apps SRL |
| File Description | Software update installer |
| File Version | 2.3.1280.99 |
| Internal Name | Updater.exe |
| Legal Copyright | (c) DeepIsle Valley Apps SRL. All rights reserved. |
| Original Filename | Updater.exe |
| Private Build | UqyddYab6G37r |
File Traits
- CryptUnprotectData
- dll
- imgui
- Installer Version
- 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: | 749 |
|---|---|
| Potentially Malicious Blocks: | 2 |
| Whitelisted Blocks: | 747 |
| Unknown Blocks: | 0 |
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.- Trojan.Agent.Gen.GHO
- Trojan.Agent.Gen.GOD
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 |
Show More
|
