Threat Database Trojans Trojan.MSIL.Filecoder.G

Trojan.MSIL.Filecoder.G

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 104
First Seen: May 28, 2021
Last Seen: September 19, 2025
OS(es) Affected: Windows

The detection of Trojan.MSIL.Filecoder.G indicates that your system has been compromised by a malicious threat. This type of threat is categorized as a Trojan, which is a broad term for malware that disguises itself as legitimate software. The ".MSIL" part of the name suggests that the malware is written in Microsoft Intermediate Language, which is a programming language used by the .NET framework. The ".Filecoder" part implies that the malware may be capable of encrypting files, which is a common tactic used by ransomware-type threats.

What Is Trojan.MSIL.Filecoder.G?

Trojan.MSIL.Filecoder.G is a type of malware that can cause significant harm to your system and data. While the exact nature of this threat is not fully understood without specific telemetry, it is clear that it has the potential to compromise your system's security and integrity. Trojans like this one can be used to gain unauthorized access to your system, steal sensitive information, or disrupt your system's normal functioning.

How Trojan.MSIL.Filecoder.G Operates

Malware like Trojan.MSIL.Filecoder.G typically operates by exploiting vulnerabilities in your system or tricking you into installing it. Once installed, it can start to execute its malicious payload, which can include a range of activities such as data theft, encryption, or unauthorized communication with its command and control servers. The exact mechanisms used by this malware are not known, but it is likely that it uses common tactics such as social engineering, drive-by downloads, or exploit kits to infect systems.

Symptoms of Infection

If your system is infected with Trojan.MSIL.Filecoder.G, you may notice a range of symptoms. These can include slow system performance, suspicious pop-ups or alerts, unfamiliar programs or icons, or encrypted files. You may also notice that your system is behaving erratically, or that you are being redirected to unfamiliar websites. However, some malware can be designed to operate stealthily, so you may not notice any symptoms at all.

  • Unexplained changes to your system settings or configuration
  • New or unfamiliar icons or programs on your desktop or in your system tray
  • Slow or erratic system performance
  • Suspicious or unfamiliar network activity

How to Remove Trojan.MSIL.Filecoder.G

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and remove any detected threats
  3. Uninstall any suspicious or unfamiliar programs that may be related to the malware
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons
  5. Reboot your system and perform a follow-up scan to ensure that the malware has been fully removed

Conclusion

The removal of Trojan.MSIL.Filecoder.G requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above and using reputable removal tools, you can help to ensure that your system is fully cleaned and that the malware is removed. However, prevention is always the best cure, so it is essential to take steps to protect your system from future infections, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious when clicking on links or downloading attachments from unfamiliar sources.

Analysis Report

General information

Family Name: Trojan.MSIL.Filecoder.G
Signature status: No Signature

Known Samples

MD5: f887bcb839b5a1fafab384463fb49d1e
SHA1: 72c644fa03146acd5f46a639d6b59937b471ccd1
SHA256: 7A3F34BD3F8571ACA6A86534909A0E34693DEA50E1296AACDE55F7691F39FAD4
File Size: 119.30 KB, 119296 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 .NET application
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • 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

Name Value
Assembly Version 1.0.0.0
File Description WormLocker2.0
File Version 1.0.0.0
Internal Name WormLocker2.0.exe
Legal Copyright Copyright © 2020
Original Filename WormLocker2.0.exe
Product Name WormLocker2.0
Product Version 1.0.0.0

File Traits

  • .NET
  • HighEntropy
  • RijndaelManaged
  • x86

Block Information

Total Blocks: 21
Potentially Malicious Blocks: 4
Whitelisted Blocks: 9
Unknown Blocks: 8

Visual Map

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

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
Show More
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • 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!NtReadFile
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
Encryption Used
  • BCryptOpenAlgorithmProvider

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