Trojan.MSIL.Agent.A
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.
| Popularity Rank: | 15,608 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 2,113 |
| First Seen: | January 7, 2013 |
| Last Seen: | June 1, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Agent.A 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 methods, symptoms of infection, and most importantly, steps to remove it from your system. Understanding the nature of this threat and how it operates is crucial in mitigating its effects and preventing future infections.
Table of Contents
What Is Trojan.MSIL.Agent.A?
Trojan.MSIL.Agent.A is identified as a Trojan-type threat. Trojans are malicious programs that can cause significant harm to computer systems. They are designed to allow unauthorized access to the victim's system, enabling the attacker to steal sensitive information, install additional malware, or disrupt system operations. The name "Trojan.MSIL.Agent.A" suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-agnostic intermediate representation of the .NET Framework Common Intermediate Language (CIL). This implies the malware could potentially run on any system that supports .NET, making it versatile and dangerous.
How Trojan.MSIL.Agent.A Operates
Like other Trojans, Trojan.MSIL.Agent.A operates by disguising itself as a legitimate program to gain access to a computer system. Once inside, it can perform a variety of malicious actions, including but not limited to, stealing personal data, downloading additional malware, modifying system settings, or even allowing remote access to the attacker. The specific operations of Trojan.MSIL.Agent.A can vary, but its primary goal is to compromise the security and integrity of the infected system without being detected.
Symptoms of Infection
Symptoms of a Trojan infection can be subtle and may not always be immediately apparent. Common signs include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs and icons. Additionally, if your system is being used as a botnet or for other malicious activities, you might notice increased network activity even when you're not using the internet. Recognizing these symptoms early can help in taking prompt action to mitigate the threat.
How to Remove Trojan.MSIL.Agent.A
- Boot into Safe Mode with Networking: This will help prevent the malware from loading and give you a cleaner environment to perform removal steps.
- Perform a Full Scan with a Reputable Tool: Utilize an anti-malware tool like SpyHunter to scan your system thoroughly. These tools are designed to detect and remove malware, including Trojans like Trojan.MSIL.Agent.A.
- Uninstall Suspicious Programs: Go through your installed programs and remove any that you don't recognize or that were installed around the time you suspect the infection occurred.
- Reset Your Browsers: If your browsers (Chrome, Firefox, Edge) have been affected, resetting them can help remove unwanted extensions and settings changes made by the malware.
- Reboot and Re-scan: After taking the above steps, reboot your system and perform another scan to ensure that the malware has been completely removed.
Conclusion
Removing Trojan.MSIL.Agent.A requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. By understanding how Trojans operate and following the removal steps outlined, you can protect your system from this and similar threats. It's also crucial to maintain good security practices, including keeping your operating system and software up to date, using strong antivirus programs, and being cautious when opening emails or downloading files from the internet. Preventing infections is always more effective than trying to remove them after the fact.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Agent.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
efa8e6f720d4ddad65257b5604aea0e3
SHA1:
dc3bcf2fa0090d5481aaaeca43f0ab572cabeee0
SHA256:
2C45C5AB77FBDBE8B4257E35C2D6E6197922C66D4598F6840CF12E5823BA4CB4
File Size:
559.10 KB, 559104 bytes
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MD5:
adff2d126868f04383b5da93c71c827d
SHA1:
80282eab562657bed281ffb4c41006b49faea6ba
SHA256:
22279D2A874413BA6EB65DF5E1BACD62936769A6EE7EFEDD459190E40FAC1519
File Size:
1.08 MB, 1076224 bytes
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MD5:
de5256c97603c0245f14c1f5bc05feea
SHA1:
aa4d92c5795e2000689a6702ab844e6a365c5dca
SHA256:
F2EFC0068F692359C89A564497686DFA913E546F4A1115BB13A21E7308F0B7C1
File Size:
480.26 KB, 480256 bytes
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MD5:
1bcc2bea7a774df6716273cb25ae37fd
SHA1:
3cd9294ffec440c2b6cfc9d2c1173140ae79cc8a
SHA256:
59A63DC1C27143919EE4FA96927264B5BF6EC430164C9C9BBB1F9513E517B368
File Size:
580.26 KB, 580264 bytes
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MD5:
c1299fd813327eb2f3980229739778fb
SHA1:
09118ad81ba8dc370c31caa067e52bac71b9910d
SHA256:
D776CE2F8214A62F66FBA5E16479CD5962089553FB194175EE599339D9B4F91A
File Size:
727.55 KB, 727552 bytes
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MD5:
544c9fa15a33d59fc70e9640e93bc9e1
SHA1:
db661455882225493fd277b6d9c7be8f59f4601c
SHA256:
A11EEECBCEAA857E4B5EC80C2AB78099707EEB20710FC853FDB5992258BFC278
File Size:
114.69 KB, 114688 bytes
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MD5:
508ddd425ecb358974481a135ade4821
SHA1:
91aeb74792ab9a3916e8afedf56e7c80c6a68446
SHA256:
FAF1EA1830C9231F83486FD9F8B8DC7F5EB9A66BC8622C5B63F738783392BA77
File Size:
2.04 MB, 2041856 bytes
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MD5:
1a41b8021edb9882e52104da55b833cc
SHA1:
012bceda65be961833bbe86017b324d44cf0f036
SHA256:
089D2EF356E680E03858CB5D07DDEF50D67922A1AFD1027A62A36399C8993D3A
File Size:
231.42 KB, 231424 bytes
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MD5:
92ab9718335a7ee8756f8e63f44bc68e
SHA1:
7879a55bce5b7c42e09d736a1bc9b2f4f3fb337f
SHA256:
2BB03FF00844F0AF613A92E7DB11B58FE20722EDFF3C404CCB5F164E193C1C60
File Size:
229.89 KB, 229888 bytes
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MD5:
951241ac4588d8872ab671b024eb4d3f
SHA1:
a231b86205f0da889f3d225e3aea897345da9f4e
SHA256:
FE917952F59EF27B17B4A5C3EC14C4B95D6B8BF56E33E99E944F649357C732E9
File Size:
177.66 KB, 177664 bytes
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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 relocations information
- File doesn't have security information
- File is .NET application
- File is 32-bit executable
- File is 64-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
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- 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 |
|---|---|
| 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 | killerabgg |
| Original Filename |
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| Product Name |
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| Product Version |
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| Squirrel Aware Version | 1 |
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 |
|---|---|---|
| Avira Operations GmbH | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 | Hash Mismatch |
File Traits
- .NET
- big overlay
- HighEntropy
- Installer Version
- NewLateBinding
- RijndaelManaged
- x64
- 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: | 6 |
|---|---|
| Potentially Malicious Blocks: | 0 |
| Whitelisted Blocks: | 3 |
| Unknown Blocks: | 3 |
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 |
|---|---|
| \device\namedpipe | Generic Read,Write Attributes |
| \device\namedpipe | Generic Write,Read Attributes |
| \device\namedpipe\gmdasllogger | Generic Write,Read Attributes |
| c:\users\user\appdata\local\service.exe | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144 |
| c:\users\user\appdata\local\temp\abfpdxoqt.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tunnel.exe | Generic Write,Read Attributes |
| c:\windows\appcompat\programs\amcache.hve | Read Data,Read Control,Write Data |
| c:\windows\appcompat\programs\amcache.hve | Write Attributes |
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\run::service | "C:\Users\Dcvvspvq\AppData\Local\service.exe" | RegNtPreCreateKey |
| 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 |
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| HKLM\software\microsoft\tracing\rasmancs::enableconsoletracing | RegNtPreCreateKey | |
| 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 |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | ﮌꝴǜ | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �m $ �vT�����#��&�-(�(X�1�1HO @V� A��H[uH�p_�zb"hk�ql(�{b��P� ������ ���������.�m� Ù� �gi����$�8წ����j�&M A�=�SB1_ B�� T�Vw���%����AE�zH��D��&��$���L | RegNtPreCreateKey |
| HKLM\system\software\microsoft\tip\aggregateresults::data | 鐄ȴ 鲱 佗 隞̃耀꧌ Ó Ϛ | 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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23 additional items are not displayed above. |
| User Data Access |
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| Encryption Used |
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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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| Anti Debug |
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Process Terminate |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
"cmd.exe" /c taskkill /im tunnel.exe /f
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C:\WINDOWS\system32\taskkill.exe taskkill /im tunnel.exe /f
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C:\Windows\Microsoft.NET\Framework64\v2.0.50727\\dw20.exe dw20.exe -x -s 1344
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