Threat Database Trojans Trojan.MSIL.PSW.Agent.U

Trojan.MSIL.PSW.Agent.U

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 91
First Seen: November 26, 2022
Last Seen: April 17, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.PSW.Agent.U on a computer system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of a system, often leading to unauthorized access, data theft, or other malicious activities. It is essential to understand the nature of this threat and take appropriate measures to remove it and prevent future infections.

What Is Trojan.MSIL.PSW.Agent.U?

Trojan.MSIL.PSW.Agent.U is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate or useful software. The name suggests it may be related to password stealing or agent-based activities, but without more specific information, it's crucial to focus on general removal and prevention strategies. Trojans can be used for a variety of malicious purposes, including stealing sensitive information, installing additional malware, or providing unauthorized access to the infected system.

How Trojan.MSIL.PSW.Agent.U Operates

Like other Trojans, Trojan.MSIL.PSW.Agent.U likely operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can communicate with its command and control servers to receive instructions, which might include stealing data, installing ransomware, or using the infected computer as part of a botnet. The exact mechanisms can vary widely, but the end goal is typically to compromise the system's security for financial gain or to cause disruption.

Symptoms of Infection

Symptoms of a Trojan.MSIL.PSW.Agent.U infection can be subtle and may not always be immediately apparent. Common signs include unexpected changes to system settings, unusual network activity, slow system performance, or the appearance of unwanted programs or toolbars. In some cases, the malware may not exhibit noticeable symptoms at all, making regular system scans essential for detection.

  • Unexplained changes to system settings or files
  • Increased network activity without a clear cause
  • Performance issues such as slowdowns or crashes
  • Appearance of unfamiliar programs or browser extensions

How to Remove Trojan.MSIL.PSW.Agent.U

  1. Boot your computer in Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of the malware.
  3. Uninstall any recently installed or suspicious programs that could be related to the infection.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes.
  5. Reboot your computer and perform another scan to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.MSIL.PSW.Agent.U requires a combination of technical knowledge and the right tools. By understanding how Trojans operate and following a systematic approach to removal, individuals can protect their systems and data from these threats. Regular system scans, keeping software up to date, and practicing safe computing habits are crucial in preventing future infections. Remember, vigilance and proactive security measures are key to maintaining a secure computing environment.

Analysis Report

General information

Family Name: Trojan.MSIL.PSW.Agent.U
Signature status: No Signature

Known Samples

MD5: 55f9753b36bdb6aaa32fe1ea5c348e0b
SHA1: 66b5965864a643ed5fff7bc5f4cfbe1c9c163c0f
SHA256: DFECDFF905194D729A848575A4E98272FCE282C8BE6BC269AE1ED437790154B8
File Size: 28.67 KB, 28672 bytes
MD5: 79a8ad410863a4b5fe1e0fc62bc387d2
SHA1: eb4766aa32153a62b2eceac17e4e2f15e2d71279
SHA256: F9156FE46EAB316FADAC8A1786596E1DAF4E59BAB338FDF525D2EFB07E428525
File Size: 310.78 KB, 310784 bytes
MD5: d3dc0666d3b58b5fe21459c49824ca99
SHA1: b934f50de99e2b143cb700fa63152642fded197f
SHA256: 68057DED08F4926903B74D031CC5A0A84D3B0FF192DEB41536F59C731AD4071F
File Size: 28.67 KB, 28672 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
Show More
  • 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

Name Value
Assembly Version
  • 1.6.2.0
  • 1.0.0.0
Comments 44 CALIBER
Company Name 44 CALIBER
File Description
  • 44 CALIBER
  • Bookmarks
File Version
  • 1.6.2.0
  • 1.0.0.0
Internal Name
  • Bookmarks.dll
  • Insidious.exe
Legal Copyright
  • Copyright © 2021
  • FuckTheSystem Copyright © 2021
Original Filename
  • Bookmarks.dll
  • Insidious.exe
Product Name
  • 44 CALIBER
  • Bookmarks
Product Version
  • 1.6.2.0
  • 1.0.0.0

File Traits

  • .NET
  • CryptUnprotectData
  • dll
  • No CryptProtectData
  • RijndaelManaged
  • x86

Block Information

Total Blocks: 214
Potentially Malicious Blocks: 3
Whitelisted Blocks: 210
Unknown Blocks: 1

Visual Map

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 ? 0 0 0 0 0 x 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • MSIL.PSW.Agent.U
  • MSIL.PSW.Agent.UB

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\tracing\rasapi32::enablefiletracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::enableautofiletracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::enableconsoletracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::filetracingmask ￿ RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::consoletracingmask ￿ RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::maxfilesize  RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasapi32::filedirectory %windir%\tracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::enablefiletracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::enableautofiletracing RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::enableconsoletracing RegNtPreCreateKey
Show More
HKLM\software\microsoft\tracing\rasmancs::filetracingmask ￿ RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::consoletracingmask ￿ RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::maxfilesize  RegNtPreCreateKey
HKLM\software\microsoft\tracing\rasmancs::filedirectory %windir%\tracing RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcConnectPortEx
  • ntdll.dll!NtAlpcCreatePortSection
  • ntdll.dll!NtAlpcCreateSectionView
  • ntdll.dll!NtAlpcQueryInformation
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
Show More
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtCreateKey
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtCreateTimer2
  • ntdll.dll!NtCreateWaitCompletionPacket
  • ntdll.dll!NtCreateWorkerFactory
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtGetCompleteWnfStateSubscription
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtNotifyChangeKey
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThread
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtPowerInformation
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryEvent
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtQueryWnfStateNameInformation
  • ntdll.dll!NtQueueApcThread
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReadVirtualMemory
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetSystemInformation
  • ntdll.dll!NtSetTimer2
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtTraceEvent
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtUnsubscribeWnfStateChange
  • ntdll.dll!NtUpdateWnfStateData
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForMultipleObjects
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory

5 additional items are not displayed above.

User Data Access
  • GetComputerName
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Other Suspicious
  • AdjustTokenPrivileges
Encryption Used
  • BCryptOpenAlgorithmProvider
Network Winsock2
  • WSAConnect
  • WSASocket
  • WSAStartup
  • WSAttemptAutodialName
Network Winsock
  • closesocket
  • freeaddrinfo
  • getaddrinfo
  • recv
  • send
  • setsockopt
Network Winhttp
  • WinHttpOpen
Network Info Queried
  • GetAdaptersAddresses
  • GetNetworkParams

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