Trojan.MSIL.Downloader.Agent.IU
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: | 323 |
| First Seen: | June 28, 2022 |
| Last Seen: | August 3, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Downloader.Agent.IU on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise your computer's security and potentially lead to further malicious activities. It is essential to understand the nature of this threat and take appropriate steps to remove it and protect your system.
Table of Contents
What Is Trojan.MSIL.Downloader.Agent.IU?
Trojan.MSIL.Downloader.Agent.IU is a type of Trojan horse malware that can download and install additional malicious components on your system. The name suggests that it is written in MSIL (Microsoft Intermediate Language), which is a platform-independent intermediate representation of the .NET Framework. This type of malware can be particularly dangerous as it can evolve and change its behavior over time, making it challenging to detect and remove.
How Trojan.MSIL.Downloader.Agent.IU Operates
Trojan.MSIL.Downloader.Agent.IU typically operates by exploiting vulnerabilities in your system or tricking you into installing it. Once installed, it can connect to a command and control server to receive instructions and download additional malware components. This can lead to a range of malicious activities, including data theft, ransomware attacks, or the installation of other types of malware. The malware can also modify system settings and disable security software to avoid detection.
Symptoms of Infection
The symptoms of a Trojan.MSIL.Downloader.Agent.IU infection can vary, but common signs include slow system performance, unexpected pop-ups or ads, and unfamiliar programs or icons on your desktop. You may also notice that your system is crashing or freezing frequently, or that your internet connection is slow or unstable. In some cases, you may not notice any symptoms at all, which is why regular system scans and monitoring are essential for detecting and removing malware.
How to Remove Trojan.MSIL.Downloader.Agent.IU
- Restart your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
- Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full system scan to detect and remove all instances of the malware.
- Uninstall any suspicious programs or applications that you do not recognize or that were installed around the time of the infection.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your system and perform another full system scan to ensure that all instances of the malware have been removed.
Conclusion
Removing Trojan.MSIL.Downloader.Agent.IU from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above and taking proactive measures to protect your system, you can minimize the risk of infection and prevent further malicious activities. Remember to always keep your operating system and security software up to date, and to be cautious when downloading and installing software from the internet. Regular system scans and monitoring can help detect and remove malware before it causes significant damage.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Downloader.Agent.IU |
|---|---|
| Signature status: | Self Signed |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
ed95959996160b58777179a79897b14c
SHA1:
cf530e913572d2f7e91f17f180909f66f23626ba
SHA256:
689ED34C6427DD409759C5C05765FB1C3206BA82CD08639B527CE09F16C08A83
File Size:
3.02 MB, 3017696 bytes
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MD5:
c6857e0a4d4e40145313521e395a322e
SHA1:
a286bc8f5065185efb39b4e4a44629a544d123c0
SHA256:
F242A989DFB0E19BDE00207A18B2606CA4AA50EECA3EB7A798DEE809A2D322A7
File Size:
2.74 MB, 2742752 bytes
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MD5:
f5ef390b99ea351538c81c012187feaa
SHA1:
f00e682face540099d5df4d030b4ff849487e1af
SHA256:
E8E7F4B4D2DEC9642EDA6BCAAA6FF89CA64DDC3A40746CA139CCE9A6D6E4EBD3
File Size:
3.72 MB, 3716808 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- 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
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
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 |
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| Assembly Version |
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| Comments |
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| Company Name |
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| File Description |
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| File Version |
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| Internal Name |
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| Legal Copyright |
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| Legal Trademarks |
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| Original Filename |
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| Product Name |
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| Product Version |
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Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| RKEYTOOLS | RKEYTOOLS | Self Signed |
| skynet-tool.com | skynet-tool.com | Self Signed |
File Traits
- .NET
- HighEntropy
- WriteProcessMemory
- x86
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: | 990 |
|---|---|
| Potentially Malicious Blocks: | 170 |
| Whitelisted Blocks: | 573 |
| Unknown Blocks: | 247 |
Visual Map
? - 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 |
|---|---|
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.0.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms | 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 |
|---|---|---|
| HKLM\software\wow6432node\microsoft\tracing::enableconsoletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::enablefiletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::enableautofiletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::enableconsoletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::filetracingmask | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::consoletracingmask | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::maxfilesize | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasapi32::filedirectory | %windir%\tracing | RegNtPreCreateKey |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::enablefiletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::enableautofiletracing | RegNtPreCreateKey |
Show More
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::enableconsoletracing | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::filetracingmask | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::consoletracingmask | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::maxfilesize | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\tracing\rasmancs::filedirectory | %windir%\tracing | 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 |
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| User Data Access |
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| Anti Debug |
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| Other Suspicious |
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| Network Winsock2 |
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| Network Winsock |
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| Network Winhttp |
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| Network Info Queried |
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| Encryption Used |
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