Threat Database Backdoors Backdoor.MSIL.Spy.Agent.VCA

Backdoor.MSIL.Spy.Agent.VCA

By CagedTech in Backdoors

Threat Scorecard

Popularity Rank: 10,723
Threat Level: 60 % (Medium)
Infected Computers: 51
First Seen: July 18, 2024
Last Seen: July 23, 2026
OS(es) Affected: Windows

The detection of Backdoor.MSIL.Spy.Agent.VCA on your system indicates a serious security threat that requires immediate attention. This backdoor threat is designed to allow unauthorized access to your computer, potentially leading to sensitive information theft, malware distribution, and other malicious activities. It is essential to understand the nature of this threat and take prompt action to remove it and secure your system.

What Is Backdoor.MSIL.Spy.Agent.VCA?

Backdoor.MSIL.Spy.Agent.VCA is a type of malware that operates as a backdoor, creating a secret pathway for hackers to access and control your computer remotely. The name itself suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-independent intermediate representation of the.NET Framework. This backdoor spy agent is designed to spy on the infected system, potentially stealing sensitive information such as login credentials, personal data, and more.

How Backdoor.MSIL.Spy.Agent.VCA Operates

Once installed on a system, Backdoor.MSIL.Spy.Agent.VCA can communicate with its command and control servers to receive instructions from its operators. It may install additional malware, steal data, or use the infected computer as a botnet to carry out distributed denial-of-service (DDoS) attacks or spread spam. The backdoor can also update itself, making it harder to detect and remove. Its operation is typically stealthy, aiming to remain undetected by traditional antivirus software through various evasion techniques.

Symptoms of Infection

Symptoms of a Backdoor.MSIL.Spy.Agent.VCA infection can be subtle and may include unusual network activity, slow system performance, and unexplained changes to system settings or files. In some cases, the presence of the backdoor might not be immediately noticeable, making regular system monitoring and antivirus scans crucial for early detection. If your system is infected, you might notice that your antivirus software is disabled or that certain security features are not functioning correctly.

  • Unusual network activity that you cannot explain
  • System crashes or instability
  • New, unfamiliar programs or icons
  • Changes to your system settings or files

How to Remove Backdoor.MSIL.Spy.Agent.VCA

  1. Enter Safe Mode with Networking to prevent the malware from loading and to allow for a cleaner removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove the backdoor and any associated malware.
  3. Uninstall any suspicious programs that you do not recognize or that were installed around the time of the infection.
  4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your system and perform another full scan to ensure that all components of the malware have been removed.

Conclusion

Removing Backdoor.MSIL.Spy.Agent.VCA requires careful and immediate action to prevent further damage to your system and to protect your sensitive information. By following the steps outlined above and maintaining good security practices, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious with emails and downloads, you can significantly reduce the risk of future infections. Remember, vigilance and proactive security measures are key to protecting your digital assets in today's evolving cyber threat landscape.

Analysis Report

General information

Family Name: Backdoor.MSIL.Spy.Agent.VCA
Signature status: No Signature

Known Samples

MD5: b333c873cfaf0330a1cc13b8b8948775
SHA1: d1bcae937fb738d10fb178cda38be708046567d9
SHA256: 23885BFE597EE494F5A4569A95A393FB22C0D89286F9928570B8956ACB708064
File Size: 180.22 KB, 180224 bytes
MD5: 1c1e93cd68adeeb0164c451ef04004ed
SHA1: e2f3e1f5d698ffbace2704315afe96b165a62206
SHA256: A273CA5D5E231B38B37D9652F4B817076E4B4436BC670D4B89A0360FDEC3084B
File Size: 180.22 KB, 180224 bytes
MD5: 5a377477340eb9b27923f768f3da1e4e
SHA1: 48924490e30dbfaa90b8c0555efab1e8fb99d63d
SHA256: 3101773AA68FCB0B43D848BFC14B34DB4D629398F09A328BFFAC8F977FF29716
File Size: 182.27 KB, 182272 bytes
MD5: 44277e6d97c0b4ad1d408e578ccec02e
SHA1: 678ad5f92129d07849f5885e2c4121fffae3bad7
SHA256: FFF08719791B7EFFD7637666BEE52532AFDD04BC008BC2625157C9C5DF518C37
File Size: 182.27 KB, 182272 bytes
MD5: fba5cc85ce9187af5a1b319d0368cf56
SHA1: 031746d708e73512280c0daf3dbd99b55061633b
SHA256: 7085E92EC4B1415B57303E850167A9A722FDA5DC11E4EEB4978D4421FA8D9359
File Size: 182.27 KB, 182272 bytes
Show More
MD5: 5c68d63b89a555abeed3944cd6892fdc
SHA1: 7603dc3ffb2db9b6f6e575de2d46feafa747ad0a
SHA256: 8F8395E85DF744001EDD6475BC537067C0CA0E840EA9DFF82A5C1379D3A1C17E
File Size: 182.27 KB, 182272 bytes
MD5: 80e121c7674554ead56569a541d9fbe6
SHA1: f7feebeb803172de8bc07f05f19cc789b6801463
SHA256: 2E37D4DD16793F81525BAB6A44E0D86FCB3E5B5D16C172210A6572AF8A4A121B
File Size: 182.27 KB, 182272 bytes
MD5: 7a6630e1f2647f81c38e1aa3817b5d60
SHA1: e0a6355d8aef1e461995f828817f30d4cfa60517
SHA256: 05E581AC34386EADC53261DFC61B46AE66D8CDF403DE57CD1845C4FD3C3F9386
File Size: 182.27 KB, 182272 bytes
MD5: bf9de1832208024d18759528ce43e116
SHA1: f464ebc5b357ed22b32e5adaef4737beb38b7525
SHA256: 8CE1D38A7A27AF456BE310D94CDA7CBBF7F0FD5E8F1CEA6884ABCAF10CFD7D83
File Size: 182.27 KB, 182272 bytes
MD5: 4ffd32a9ce58d9813269204f7f41e260
SHA1: 73d66a826faf89a4f9db4440308feea7b7f80012
SHA256: D21D754E6CE280EAE7DB55AA5BDCD65F33A4153E5EF46372D74ABF88A950CC12
File Size: 182.27 KB, 182272 bytes
MD5: 072864983f78b4b11f456f21cbcded26
SHA1: 36219aa8f9cdd4da57548e71f67cb83ed0087ee5
SHA256: BAC3F54A333A5BFABCD0067CF062223534A7C90B0A3DD28CE1AC4A3F41522428
File Size: 182.27 KB, 182272 bytes
MD5: 08a6d8379c1b2f000826c5425bfdf4e3
SHA1: 6f4e229d6ae4acef54a146534a5450f4e48db7f9
SHA256: F1396D28E2059B52C94DC4E22C7AB303FB2EA1C1DB96CFF214C3197C079769CF
File Size: 182.27 KB, 182272 bytes
MD5: 3940b3b56749c2e0fb77dcf937c1da8d
SHA1: e9ec7a4dd15ae84bb7b79e18c14f4212fbc76c48
SHA256: 6AFFB5FE76F747B1B1371830C736E15939089C4D0D63A2AA87A272134217819D
File Size: 180.22 KB, 180224 bytes
MD5: 94f9d7ef1b95a1a0f32760fd3af1c4b7
SHA1: 046f7c7dc4718736a250c0513a40892fbde5f059
SHA256: 370E960297A3068E03115AA79B837E5E79C9ED5A2E4E19C0B603F51D4503063A
File Size: 182.27 KB, 182272 bytes
MD5: f65893ac989b7fa91c6a80c0f8487f5d
SHA1: a32ab2c4672404b21c82a33d291e9acd69daccec
SHA256: 196CC1CB81A97015173ECA30A02FDF379C4969A590952CD2902FA7EA0687839B
File Size: 182.27 KB, 182272 bytes
MD5: 380a3792f0f3cb0193dba6ca98b99304
SHA1: 07181d4a4a1dde4e7201bd7a9fc26f68a7d194f0
SHA256: E44E30FAE2200986609049A259333A578CFCF662721B893106CEF033E693AC97
File Size: 182.27 KB, 182272 bytes
MD5: 59fe6d3b1bd27e118a7f1d447d2df4f9
SHA1: 2397053d0dd1c399a5216a0187ad3991e49d8df9
SHA256: 65DB00BE51147CAB225DFCA10ADB2ABFBDC3B2546AE0C185B47E17C303B84368
File Size: 182.27 KB, 182272 bytes
MD5: fad65945edc9e99db079b405f5eaabdd
SHA1: 8ae74a4f8d4225bbbcce1351e0a5a93e46b7811c
SHA256: B26A0EDEB83CCC6C3E2D9F018293FE01686C365697FABB50306EFD2301C8BC74
File Size: 182.27 KB, 182272 bytes
MD5: d9cb42331da92e439a8b669ddfb4cc1f
SHA1: 95fa721587af2d70fdacded097cda907063032e9
SHA256: 8D68FE596A4DD21C14343BA87B9EDA617CB8631EBA173C38F373CA620D382456
File Size: 182.27 KB, 182272 bytes
MD5: 68a902c907981bd0322799fac47a1142
SHA1: ee6ffd7b7ab6125ef92cdc158d208bc817be4479
SHA256: 2650FA188BC3ED548ACB436474BC38BDA6F20E08514D9B00656EFAA45BECC4ED
File Size: 182.27 KB, 182272 bytes
MD5: 362bfc441b4536d27c28e09f04a83ac4
SHA1: 4d8448041a53246feeac0083f61408b583dbbd69
SHA256: 530E68E5809EBBD756409B0726E9C0BD62DB84562B2612E66A7C23F791209273
File Size: 180.22 KB, 180224 bytes
MD5: 61f43c8f341c6a60112cd347cd009193
SHA1: 9c7a2dba0d1797c5053c09816f25b4614e42f8c2
SHA256: 1E35C66F0CD75F4831C9E9178AE430E2555ED22DB166880948D718F6AC0100CE
File Size: 182.27 KB, 182272 bytes
MD5: 8b3bac0d529fa2c59f2525f879016922
SHA1: fa8b76b2d97edc3075ec435063465fe53eba3d60
SHA256: C006FBDD006AAB2A829BB09D76F43DC55410860C4D0C4B85D9B65D13009115A2
File Size: 182.27 KB, 182272 bytes
MD5: cf8012b07f756c42b615f8cc11fab912
SHA1: 717751c0d6f587ec068f76bf8b99bb8b0ea7a283
SHA256: D446150D6EBF290EE150BB126C359BB638A8C6FB212743D89D7230F1D135112F
File Size: 182.27 KB, 182272 bytes
MD5: 7fc9ef777e0d9674f65a6a533c89b2bf
SHA1: 6a74bb5ddc5331773713df5196a0d68781760fe4
SHA256: 0F50ABF1F6AF6B671094AA2AD85EE21A0397A6A7F5E21318C055BC523CCCC161
File Size: 182.27 KB, 182272 bytes

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 resources
  • File doesn't have security 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
  • File is not packed
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  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • .NET
  • No Version Info
  • x86

Block Information

Total Blocks: 249
Potentially Malicious Blocks: 22
Whitelisted Blocks: 227
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Spy.Agent.TCN
  • MSIL.Spy.Agent.TCP
  • MSIL.Spy.Agent.TCV
  • MSIL.Spy.Agent.VCA

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateThreadEx
Show More
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation