Trojan.MSIL.Downloader.CAACA
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: | 25 |
| First Seen: | June 18, 2022 |
| Last Seen: | November 26, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Downloader.CAACA on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operational mechanisms, symptoms of infection, and most importantly, steps to remove it from your system.
Table of Contents
What Is Trojan.MSIL.Downloader.CAACA?
Trojan.MSIL.Downloader.CAACA is identified as a Trojan-type threat, which typically means it is a type of malware that disguises itself as legitimate software but actually allows unauthorized access to the victim's system. The name suggests it may be involved in downloading additional malicious components, but without specific details, it's crucial to approach this with a general understanding of Trojan horse malware. These threats are known for their ability to evade detection by traditional antivirus software, making them particularly dangerous.
How Trojan.MSIL.Downloader.CAACA Operates
While the exact operational details of Trojan.MSIL.Downloader.CAACA are not provided, Trojans generally operate by exploiting vulnerabilities in software or tricking users into installing them. Once installed, they can perform a variety of malicious activities, including data theft, installation of additional malware, and providing backdoor access to attackers. The "Downloader" part of the name implies it may be designed to download and install other malicious programs, further compromising the security of the infected system.
Symptoms of Infection
Symptoms of a Trojan infection can vary widely but may include unusual system behavior, such as slow performance, frequent crashes, or the appearance of unwanted programs or toolbars. You might also notice changes in your browser settings or the presence of pop-ups and unwanted advertisements. In some cases, the infection may not display obvious symptoms, making regular system scans crucial for detection.
How to Remove Trojan.MSIL.Downloader.CAACA
- Boot into Safe Mode with Networking: This will help prevent the malware from loading and give you a cleaner environment to work in.
- Conduct a Full Scan: Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help identify and remove the Trojan and any associated malware.
- Uninstall Suspicious Programs: Go through your installed programs and uninstall anything that looks suspicious or that you do not recognize.
- Reset Your Browser: If your browser has been affected, reset it to its default settings. This applies to browsers like Chrome, Firefox, and Edge. Be aware that this will remove all extensions, so you will need to reinstall any legitimate ones afterward.
- Reboot and Re-scan: After taking the above steps, reboot your system and perform another scan to ensure that the threat has been fully removed.
Conclusion
Removing Trojan.MSIL.Downloader.CAACA requires careful and methodical steps to ensure your system is thoroughly cleaned and protected. It's also important to take preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious when opening emails or downloading files from the internet. By following the removal steps outlined and maintaining good cybersecurity practices, you can protect your system from this and other potential threats.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Downloader.CAACA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
e9b3efa1751d49f2afe5f8699c9343fa
SHA1:
1cd7e697c8a87ae95070c584dc0a1cfdcbd6dac1
SHA256:
A51E301F6D7463B81A460174B90ABF9B26B1893F64DE09C8AA175C21DDE62D2B
File Size:
45.06 KB, 45056 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have security information
- File has exports table
- File is .NET application
- File is 64-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)
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- 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 |
|---|---|
| Assembly Version | 1.0.0.0 |
| File Version | 1.0.0.0 |
| Internal Name | CPLApplet.dll |
| Original Filename | CPLApplet.dll |
| Product Version | 1.0.0.0 |
File Traits
- .NET
- dll
- HighEntropy
- NewLateBinding
- 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: | 28 |
|---|---|
| Potentially Malicious Blocks: | 9 |
| Whitelisted Blocks: | 19 |
| Unknown Blocks: | 0 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
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.- MSILZilla.FK
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 |
|---|---|---|
| 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\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 | 㵖 ȁ 獖} | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | 沈 䠱O噀ñʁ傄ëķ駃ó䧌VߙĤ⣳ġj 鈄ĞꩠŖ | RegNtPreCreateKey |
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| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | 沉 䠱O噀ñʁ傄ëķ駃ó䧌VߙĤ⣳ġj 鈄ĞꩠŖÉ | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | 沊 䠱O噀ñʁ傄ëķ鶝駃ó䧌VߙĤ⣳ġj 鈄ĞꩠŖÉ | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | 沋 䠱O噀ñʁ傄ëķ鶝淃駃ó䧌VߙĤ⣳ġj 鈄ĞꩠŖÉ | 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 |
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22 additional items are not displayed above. |
