Trojan.MSIL.Agent.YCB
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: | 5,651 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 4,350 |
| First Seen: | March 29, 2022 |
| Last Seen: | July 15, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Agent.YCB on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating characteristics, symptoms of infection, and steps to remove it from your system. It is essential to address this issue promptly to prevent potential damage to your data and system integrity.
Table of Contents
What Is Trojan.MSIL.Agent.YCB?
Trojan.MSIL.Agent.YCB is identified as a Trojan-type threat, which is a broad category of malware designed to deceive users about its true intent. Trojans can be used for various malicious purposes, including data theft, unauthorized access, and the distribution of additional malware. The name "Trojan.MSIL.Agent.YCB" suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-agnostic intermediate representation of the .NET Framework. This allows the malware to potentially operate on systems that support .NET, making it versatile and a significant concern for system security.
How Trojan.MSIL.Agent.YCB Operates
Like many Trojans, Trojan.MSIL.Agent.YCB is likely designed to operate stealthily, attempting to evade detection by security software. It may exploit vulnerabilities in software or use social engineering tactics to trick users into installing it. Once installed, it could potentially communicate with command and control servers to receive updates, steal data, or install additional malware. The exact operation can vary widely depending on the specific goals of the malware authors, but the common theme is to compromise system security and user privacy.
Symptoms of Infection
Symptoms of a Trojan.MSIL.Agent.YCB infection can be subtle and may not always be immediately apparent. Common indicators of a Trojan infection include unexpected changes to system settings, unusual network activity, slow system performance, and the appearance of unwanted programs or tools. In some cases, the malware may trigger alerts from security software, but it is designed to operate under the radar, making regular system checks and monitoring essential for early detection.
- Unexplained changes to system settings or files
- Increased network activity without apparent cause
- Performance issues, such as slower than usual system operation
- Appearance of unfamiliar programs or browser extensions
How to Remove Trojan.MSIL.Agent.YCB
- Boot your system into Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all instances of the malware.
- Uninstall any recently installed programs or applications that you do not recognize or no longer need, as they may be related to the malware.
- Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
- Reboot your system and perform another full scan with your anti-malware tool to ensure that all components of the malware have been removed.
Conclusion
Removing Trojan.MSIL.Agent.YCB from your system requires careful and thorough steps to ensure all components are eliminated. It is crucial to stay vigilant and maintain up-to-date security software to protect against future threats. Regularly backing up important data and being cautious when opening email attachments or downloading software from the internet can also help prevent malware infections. By following the removal steps outlined and maintaining good cybersecurity practices, you can help protect your system and data from malware like Trojan.MSIL.Agent.YCB.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Agent.YCB |
|---|---|
| Signature status: | Self Signed |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
bc6c72b3a2134532a1dc9182ec4e89a6
SHA1:
d529bafaf2579bc8969d51fffa0d2a112ba18f75
File Size:
164.35 KB, 164352 bytes
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MD5:
c4a4587d51b890264f414f4ccd35afbe
SHA1:
662053dd74925fae18c3ad046bf04511df2e55e0
File Size:
147.73 KB, 147728 bytes
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MD5:
293b2e5f391172fbdf042388fa9229ed
SHA1:
5c31dd67b791aab24b576bffa9a091bdeddcd557
SHA256:
1E1F0406DCEC890E7F3D8AB86D3215CB3CCE47FDD22E57D5ABAD4BB185708D95
File Size:
158.99 KB, 158992 bytes
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MD5:
c4ed8cfad8d38bb8cd7cef7b7f8e8dd4
SHA1:
8d61d3d04cd23bff8e74d0ecdd8b6ede5ac2525e
SHA256:
68D0562169E1608BDF4634FE13CE38FC83BDE9C0DC2E8E360FCD4A2C26978FE4
File Size:
146.70 KB, 146704 bytes
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MD5:
5caa063a1674d4a3089cb15a96725886
SHA1:
94bbcd2ce1de7e3cef64790a11924e4182f4648b
SHA256:
3076A2F2AF4D1EAC9CB328D3C68A8B181D94B0CB7B953DC876E80214C37151E2
File Size:
158.99 KB, 158992 bytes
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MD5:
666b27c0489a2a903119eb05e6d92d50
SHA1:
b48eb147e4659e6ce8a73d22a1fee6d0022afb94
SHA256:
9E99A0911F58274CA849734EA6A122417E039F7E8C6FD0FD065DC9FB7DAFEE95
File Size:
158.99 KB, 158992 bytes
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MD5:
9c6aefb45e4b7faac6d066b084fe7677
SHA1:
541dd6c79d39095aef777a93311a9f6a890cefa6
SHA256:
DF4ABED3DDC1EC3BA5C218A3CA47676F16F1514296572024B33D9546E573F737
File Size:
3.79 MB, 3789456 bytes
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MD5:
354c723262e53b5b9ef9b67a0c708492
SHA1:
653d8ad45111ffc8c91770fdbe792e0475b87d9c
SHA256:
1C99E527CCC7F616898FFCE14D0BFF11657565844530D52D30392EA9CA45071A
File Size:
136.70 KB, 136704 bytes
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MD5:
b044d415d0784e5be4ca06896042ac23
SHA1:
2c68b9e2378c514128d3af52fb17f1f8a7e5a318
SHA256:
99BB06EF2C61AE8FDFCC4CD278FFD02A5FE7CD9F1930F87F47507F84B613EED2
File Size:
147.73 KB, 147728 bytes
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MD5:
a760ef028341cc75592715248ced7e0f
SHA1:
b5aed56d99493fabdcc20160f49b79fb50fa4565
SHA256:
51BB9ADEB7D2BF9DB33372F23CA78FC056FB5A08ABDB25A24767E32AFF17EBF4
File Size:
160.53 KB, 160528 bytes
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MD5:
4b3e5788106eb15467c856c550ac9ff6
SHA1:
d349ee923904a5ec739971cdb6ba81c9e8c30a4e
SHA256:
E6E04FC1826CB13F9083783686C2C270D4B72CF0DE6BFBFEAB77AF3818F4D847
File Size:
316.93 KB, 316928 bytes
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MD5:
ee92cae70e4a386df50cd4a2e1205052
SHA1:
3963c93bef9cb539febab8a58a67b70dd831e534
SHA256:
DCFF3AF566C18FF063B355781711E95B08458F76C185CB90A3EDC3107237252F
File Size:
158.99 KB, 158992 bytes
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MD5:
fbfe4b69dea0fb7c47d03d0eb730308b
SHA1:
b93002422aefab7ca32e4f6d380267ca1f8d688a
SHA256:
AFFFED2F48C4262F425A49EF78ACDBB57126DF3882F4E93DCEEAEDBC9BE8D09C
File Size:
421.89 KB, 421888 bytes
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MD5:
985b5d921cd579e70526299086680bf6
SHA1:
ef369b445a126b453a079ffb374a562054c34825
SHA256:
AACA1E0E871DBFC10B146ABB62019F886F6713F01AF10EBEFF90BDD7D30E58FB
File Size:
77.82 KB, 77824 bytes
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MD5:
eceb7ffacfd8966ee9300afa02b390c1
SHA1:
86eea51899b461c2b62e95573ce7281588be4ba7
SHA256:
F3A38DFCA3BFAF6797B77F737C5DDB5330BE284194F6FDFE74DF080447E8D3A3
File Size:
147.73 KB, 147728 bytes
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MD5:
2c0f1656b8947c324d222e1b8ec9e970
SHA1:
bdd0bdf1c981c295f1b21e5885a2990d71f0a546
SHA256:
A034AE938FE3688F2797FA298063F40662895785696F9BA289A0124AA898AE20
File Size:
159.23 KB, 159232 bytes
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MD5:
a138e9fa79521e966d0c98edd1bda32e
SHA1:
446ad0d219c5926c7a91b23fe26cf2d064984f60
SHA256:
932D28800B2358B5597A957096D05EA23D491BD300504E305F0F5FF2AC96CC92
File Size:
158.99 KB, 158992 bytes
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MD5:
792433a747e638a2ea989032f66a3976
SHA1:
cec5190203bc276fe4a60c9a547ed89a93e6bfb0
SHA256:
C05CB7AAB15A52334E6B436AB0FDDBABF7BBB81CFC06AECAA2596AAFB3BDD5CB
File Size:
2.79 MB, 2794484 bytes
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MD5:
381db6a79ea7ebd82228125fabe075c9
SHA1:
c4967df6f87369c6f78da7a6ce4f5aecea2f9bbd
SHA256:
8C9956601D4A5101D358683E9FDF84016C0D0CD1E55AB3613F021CEA7E0EC775
File Size:
158.99 KB, 158992 bytes
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MD5:
8e445ee7116ab0a8782031d0ec700223
SHA1:
9236e592a8507e4f6a08c45894001a1c36f269f2
SHA256:
AF6D76A58C9BFD872860F6F7CF19B846CA75A2060314456341D42583A422544B
File Size:
158.99 KB, 158992 bytes
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MD5:
8a422745cdae957ea60524ae3590687c
SHA1:
c5f04951e56ec9c61c2e4add96a031dd8970c910
SHA256:
10617DC0E6E4FDFD0C7B795AC444A3E76BAE6FBA2CB6D2DDBABCE905E4D1360B
File Size:
112.13 KB, 112128 bytes
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MD5:
9780e25204f0c4c500e66bcb9a757831
SHA1:
b30290d0ca6a1c77d1f2769f8a224886b1392af7
SHA256:
7A64F4695F3552DE164D39B396A42336B6A844B7F89A29EA14DB8863033BECCD
File Size:
90.11 KB, 90112 bytes
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MD5:
39bfcf66a5e4372d68c28f961a931473
SHA1:
a41632b4156b6d94d6227a843b125a44777a8636
SHA256:
A53DA9D1420BCBB9A4D4B57F5582A2B3F73818664D411B938FF22F396489DA3A
File Size:
84.99 KB, 84992 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 has TLS information
- File is .NET application
- File is 32-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 Native application (NOT .NET application)
- 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 |
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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 |
|---|---|---|
| Tenorshare Co., Ltd. | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 | Self Signed |
| Tenorshare Co., Ltd. | DigiCert Trusted Root G4 | Root Not Trusted |
| White Town s.r.o. | StartCom Class 3 Object CA | Self Signed |
File Traits
- .NET
- .sdata
- HighEntropy
- NewLateBinding
- No Version Info
- ntdll
- Reactor
- Reflective
- RijndaelManaged
- WriteProcessMemory
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- 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: | 130 |
|---|---|
| Potentially Malicious Blocks: | 0 |
| Whitelisted Blocks: | 104 |
| Unknown Blocks: | 26 |
Visual Map
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0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block
? - 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.- CsdiMonetize.G
- MSIL.Agent.GHA
- MSIL.Agent.GOF
- MSIL.Agent.YCG
- MSIL.BitStealer.C
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- MSIL.Bladabindi.ACA
- MSIL.ClashHack.A
- MSIL.DllInject.RSA
- MSIL.DllInject.RSC
- MSIL.Downloader.Agent.TB
- MSIL.Downloader.Agent.WA
- MSIL.Downloader.ZG
- MSIL.Gamehack.LD
- MSIL.Inject.DU
- MSIL.Injector.AA
- MSIL.Injector.BIA
- MSIL.Injector.BM
- MSIL.Krypt.BAFJ
- MSIL.Krypt.DSJ
- MSIL.Krypt.EGA
- MSIL.Krypt.GBEB
- MSIL.Krypt.JKB
- MSIL.Krypt.MBAXE
- MSIL.Krypt.MBAXL
- MSIL.Krypt.MBAXM
- MSIL.Krypt.MBXB
- MSIL.Krypt.XDA
- MSIL.Krypt.XFB
- MSIL.Krypt.XZF
- MSIL.Krypt.ZADGB
- MSIL.OxyPumper.A
- MSIL.Spy.Agent.DNC
- MSIL.Spy.QVE
- MSIL.Spy.QVI
- MSIL.Stealer.BVC
- MSIL.Stealer.CN
- MSIL.Stealer.CW
- Spy.Agent.BB
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.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 |
| c:\users\user\appdata\local\temp\is-lorh8.tmp\541dd6c79d39095aef777a93311a9f6a890cefa6_0003789456.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-mtuts.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-mtuts.tmp\_isetup\_shfoldr.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-q3816.tmp\cec5190203bc276fe4a60c9a547ed89a93e6bfb0_0002794484.tmp | Generic Write,Read Attributes |
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 |
|---|---|
| Process Shell Execute |
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| User Data Access |
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| Other Suspicious |
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| Encryption Used |
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| Anti Debug |
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| Process Terminate |
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| Syscall Use |
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| Process Manipulation Evasion |
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| Keyboard Access |
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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.
C:\WINDOWS\system32\fondue.exe "C:\WINDOWS\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
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"C:\Users\Kzczhkfh\AppData\Local\Temp\is-LORH8.tmp\541dd6c79d39095aef777a93311a9f6a890cefa6_0003789456.tmp" /SL5="$70040,3281339,166400,c:\users\user\downloads\541dd6c79d39095aef777a93311a9f6a890cefa6_0003789456"
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"C:\Users\Rytehhwg\AppData\Local\Temp\is-Q3816.tmp\cec5190203bc276fe4a60c9a547ed89a93e6bfb0_0002794484.tmp" /SL5="$40336,2414879,140800,c:\users\user\downloads\cec5190203bc276fe4a60c9a547ed89a93e6bfb0_0002794484"
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