Trojan.MSIL.BadJoke.U

Trojan.MSIL.BadJoke.U is the SpyHunter detection name for a Trojan-type threat. This report summarizes what security researchers observe from samples that match this detection and explains how to remove the threat from an affected device.

Detections in this class are assigned by signature and behavioral analysis rather than to a single, named malware family, so the exact payload can vary between samples. The behavior described below is drawn from automated analysis of a representative sample and should be treated as indicative rather than exhaustive.

What Is Trojan.MSIL.BadJoke.U?

Trojan.MSIL.BadJoke.U flags files that behave in ways consistent with a Trojan-type threat. The analyzed sample is a Windows PE executable with a signature status of No Signature. Because the detection is signature-based, files caught by it may be delivered through a range of channels — bundled installers, cracked or pirated software, malicious email attachments, or drive-by downloads from untrustworthy sites.

How Trojan.MSIL.BadJoke.U Operates

Malware Analysis

The values below are for a single representative sample. A signature-based detection matches many distinct files, so treat these as one example rather than the only indicator of compromise:

• SHA-256: bf3a0dfefdcb89880a4c979150121747bb5a994a98b01c5fa2358c10a752fcc6
• File type: Windows PE executable
• Signature status: No Signature

Symptoms of Infection

• Security software repeatedly reports Trojan.MSIL.BadJoke.U on the device.
• The system runs slower than usual, or unfamiliar processes appear in Task Manager.
• Unexpected network activity, new files, or changed settings that you did not authorize.

Why Trojan.MSIL.BadJoke.U Is a Risk

Any file that triggers this detection should be treated as untrusted. Threats in this category can be used to download further malware, steal information, or give an attacker a foothold on the system. Even if a single sample appears low-impact, leaving it in place exposes the device to the additional payloads it may fetch.

How to Remove Trojan.MSIL.BadJoke.U

Follow these general steps to remove the threat and undo the changes it may have made:

1. Disconnect and reboot into Safe Mode. Disconnect from the internet and restart Windows in Safe Mode with Networking to stop the threat from running.
2. Run a full anti-malware scan. Use a reputable, up-to-date security tool such as SpyHunter to scan the entire system and quarantine everything detected as Trojan.MSIL.BadJoke.U.
3. Remove suspicious programs. In Settings > Apps (or Control Panel > Programs and Features), uninstall any unfamiliar applications installed around the time the problem began.
4. Reset affected browsers. In Chrome, Firefox, and Edge, remove unknown extensions and reset settings to clear any changes made to your homepage or search provider.
5. Reboot and re-scan. Restart normally and run a second full scan to confirm the system is clean.

Running a full system scan with an anti-malware tool such as SpyHunter is the most reliable way to detect every component associated with this threat and remove it completely.

Conclusion

Trojan.MSIL.BadJoke.U is a Trojan-type threat that should be removed promptly. Because it is detected by signature and behavior, the safest approach is a full anti-malware scan followed by the cleanup steps above, plus cautious downloading habits to avoid re-infection.

Analysis Report

General information

Family Name:	Trojan.MSIL.BadJoke.U
Signature status:	No Signature

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: 1ac6b25505e46a16a12ac5f4d6792708 SHA1: 7fef6bab8450ca1477058ac4a98c058faab2e57b SHA256: BF3A0DFEFDCB89880A4C979150121747BB5A994A98B01C5FA2358C10A752FCC6 File Size: 5.91 MB, 5914112 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• 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)

File Icons

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File Icons

This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.

Windows PE Version Information

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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
Assembly Version	1.0.0.0
File Description	BALDI
File Version	1.0.0.0
Internal Name	BALDI.exe
Legal Copyright	Copyright © 2022
Original Filename	BALDI.exe
Product Name	BALDI
Product Version	1.0.0.0

File Traits

• .NET
• .sdata
• 2+ executable sections
• HighEntropy
• x86

Block Information

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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:	68
Potentially Malicious Blocks:	6
Whitelisted Blocks:	62
Unknown Blocks:	0

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 x 0 0 x x x 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 0 0 0 x

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

Similar Families

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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.

• MSIL.Flooder.X
• MSIL.OpenSUpdater.BP
• MSIL.PSW.Agent.ME
• MSIL.PSW.Agent.XB
• MSIL.PSW.Agent.XC

Show More

• Razy.RB

Windows API Usage

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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	ntdll.dll!NtClose ntdll.dll!NtEnumerateKey ntdll.dll!NtEnumerateValueKey ntdll.dll!NtFreeVirtualMemory ntdll.dll!NtOpenKey ntdll.dll!NtOpenKeyEx ntdll.dll!NtOpenProcessToken ntdll.dll!NtQueryDirectoryFileEx ntdll.dll!NtQueryInformationProcess ntdll.dll!NtQueryInformationToken Show More ntdll.dll!NtQueryKey ntdll.dll!NtQuerySecurityAttributesToken ntdll.dll!NtQueryValueKey ntdll.dll!NtQueryVirtualMemory ntdll.dll!NtSetEvent ntdll.dll!NtSetInformationProcess ntdll.dll!NtSetInformationWorkerFactory ntdll.dll!NtTestAlert ntdll.dll!NtUnmapViewOfSectionEx ntdll.dll!NtWriteFile UNKNOWN
User Data Access	GetUserObjectInformation