Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/10/2026, 04:25

General

  • Target
    Afterschool.Tag.v1.0.1/_Redist/xnafx40_redist.msi
  • Size 6.7MB
  • Sample261023-e2ascaby7n
  • SHA256 e6c41d692ebcba854dad4b1c52bb7ddd05926bad3105595d6596b8bab01c25e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 21 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 29 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 48 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Afterschool.Tag.v1.0.1\_Redist\xnafx40_redist.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2296
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4112
      • C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\Redist\DX Redist\DXSETUP.exe
        "C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\Redist\DX Redist\DXSETUP.exe" /silent
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Modifies registry class
        PID:2096
      • C:\Windows\syswow64\MsiExec.exe
        "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Program Files (x86)\Common Files\Microsoft Shared\XNA\Framework\Shared\xnavisualizer.dll"
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:544
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:2640

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59261d.rbs

          • Path C:\Config.Msi\e59261d.rbs
          • Size 17KB
          • SHA256 1064eb280738ac4fb7c391bca674029c0b33b2bf46e3ba26cc45913cee60284c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59261f.rbs

          • Path C:\Config.Msi\e59261f.rbs
          • Size 596B
          • SHA256 ce0907edabedb764e90ca0050897a1fcf07db0ad200392d416c7daf1827fd1d3
          • MD5 SHA1 SHA512 TLSH

          Apr2007_d3dx9_33_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Apr2007_d3dx9_33_x86.cab
          • Size 1.5MB
          • SHA256 219441f975c200352a12dc3d8f82811fc7b53ed28d63761327933afbb660f876
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Apr2007_xinput_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Apr2007_xinput_x86.cab
          • Size 55KB
          • SHA256 5ab7bb15394e4ece850da5453413ab1de2ea97d5c93f86482b75073aaa05da9c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Feb2010_X3DAudio_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Feb2010_X3DAudio_x86.cab
          • Size 20KB
          • SHA256 7fbf09682fd15d721ff2c5cb110b5ffcf5982cd2dd8d72b708cf3cd0bc4fa250
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Feb2010_XACT_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Feb2010_XACT_x86.cab
          • Size 90KB
          • SHA256 0ba00c41443639dea9b816fa2608088ccef5dbe850531dff4c1e7993804b0b60
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Feb2010_XAudio_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Feb2010_XAudio_x86.cab
          • Size 270KB
          • SHA256 281bb0e12f617e9ae7fe3301a7d4a08201b377caa0311a886e8cddc2526f734a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Mar2009_d3dx9_41_x86.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\Mar2009_d3dx9_41_x86.cab
          • Size 1.5MB
          • SHA256 5146e15d4c65590704286bfcfbbcc31e98a6832f8a7cc3bfdcb1e7fa5a647bb1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dxupdate.cab

          • Path C:\PROGRA~2\MICROS~2\XNAGAM~1\v4.0\Redist\DXREDI~1\dxupdate.cab
          • Size 93KB
          • SHA256 54d68f154058433865708ee0dbf3ecf2d609ffbd618e84a1056440379494d9fd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          xnavisualizer.dll

          • Path C:\Program Files (x86)\Common Files\Microsoft Shared\XNA\Framework\Shared\xnavisualizer.dll
          • Size 46KB
          • SHA256 11bcc9f47d9b0397f6d78c08e7208ee812cbef54bb02a8c3a681608879471c8c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DSETUP.dll

          • Path C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\Redist\DX Redist\DSETUP.dll
          • Size 91KB
          • SHA256 9d47b4fa2dcce6a02a51324cfb97f5e153086c2eb8832b211e175cbe5fb850b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DXSETUP.exe

          • Path C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\Redist\DX Redist\DXSETUP.exe
          • Size 512KB
          • SHA256 16953a202265db5655b3dd972b855619728da76545a2f94bcbb6c43262f48d5b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dsetup32.dll

          • Path C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\Redist\DX Redist\dsetup32.dll
          • Size 1.6MB
          • SHA256 a5c6df12f9fe2edab2a22fe7abf3cb17eac110a6fd469f2570ba04afc88ad767
          • MD5 SHA1 SHA512 SSDEEP TLSH

          FEB2010_X3DAudio_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\FEB2010_X3DAudio_x86.inf
          • Size 1KB
          • SHA256 d4da3e530982812d1e2a31570b80af541fac1b13c72997d2aad7ea3bfeaf4a4a
          • MD5 SHA1 SHA512 TLSH

          FEB2010_XACT_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\FEB2010_XACT_x86.inf
          • Size 1KB
          • SHA256 e850fdb84bcac0f667927e53fee943efd3f43be6c6a0ae1e17f3fff83ddb2635
          • MD5 SHA1 SHA512 TLSH

          FEB2010_XAudio_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\FEB2010_XAudio_x86.inf
          • Size 1KB
          • SHA256 74c827ef94881099761e04397ef8f162fd0ccaf4876a5503c4b53a5216d2acca
          • MD5 SHA1 SHA512 TLSH

          Mar2009_d3dx9_41_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\Mar2009_d3dx9_41_x86.inf
          • Size 1KB
          • SHA256 bd29711cc2ecd924990167ffa95f48842e24aeed3acef1023717040240b4bbb6
          • MD5 SHA1 SHA512 TLSH

          X3DAudio1_7.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\X3DAudio1_7.dll
          • Size 21KB
          • SHA256 288c701bdedf1d45c63dd0b7d424a752f8819f90feb5088c582f76bc98970ba3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          XACT3_6_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\XACT3_6_x86.inf
          • Size 849B
          • SHA256 da4b77f9e2cee68c8ff767e851b9abdb1d73a30704e6a2e0d3874f8cc559665f
          • MD5 SHA1 SHA512 TLSH

          XAPOFX1_4.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\XAPOFX1_4.dll
          • Size 72KB
          • SHA256 0aee44b12913a95840ee6431d90518b0d72c54a27392e21ee6995e2151554a06
          • MD5 SHA1 SHA512 SSDEEP TLSH

          XAudio2_6_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\XAudio2_6_x86.inf
          • Size 882B
          • SHA256 c60c4a6018e5f860a12322a0d77a1f2ad85c2d6d6dd04cc651560790dd66c9ad
          • MD5 SHA1 SHA512 TLSH

          apr2007_d3dx9_33_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\apr2007_d3dx9_33_x86.inf
          • Size 1KB
          • SHA256 349a09a2791d697bffffc61410a536cdcf258f0d7c86dda44a297e8aec4bdf00
          • MD5 SHA1 SHA512 TLSH

          apr2007_xinput_x86.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\apr2007_xinput_x86.inf
          • Size 1KB
          • SHA256 1c798cb80e9e46ce03356ea7316e1eff5d3a88ccdd7cbfbfcdce73cded23b4e5
          • MD5 SHA1 SHA512 TLSH

          d3dx9_33.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\d3dx9_33.dll
          • Size 3.3MB
          • SHA256 c6b7b2ad7742dde5dd8d1a35fdc1c185e586e551ad9c74d3fb21759cd8ca4da8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dxupdate.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\dxupdate.dll
          • Size 169KB
          • SHA256 b1f954cd75dc3c9d5bc57f1a4c28720ee3639aa8a4306f3da7b27d3c361ff8f5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dxupdate.inf

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\dxupdate.inf
          • Size 12KB
          • SHA256 7530c6e18dbb522c5f4fbf6714962c185ea318f9eab7aeb833b0cc07cd2fe656
          • MD5 SHA1 SHA512 SSDEEP TLSH

          xactengine3_6.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\xactengine3_6.dll
          • Size 233KB
          • SHA256 8a7e7c5ac2e6230f0249d46751522e7ecf85e7490cf7491ab73bf2e7e59e4c0f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          xinput1_3.dll

          • Path C:\Users\Admin\AppData\Local\Temp\DX2B5C.tmp\xinput1_3.dll
          • Size 79KB
          • SHA256 8d540d484ea41e374fd0107d55d253f87ded4ce780d515d8fd59bbe8c98970a7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59261e.msi

          • Path C:\Windows\Installer\e59261e.msi
          • Size 6.7MB
          • SHA256 e6c41d692ebcba854dad4b1c52bb7ddd05926bad3105595d6596b8bab01c25e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DirectX.log

          • Path C:\Windows\Logs\DirectX.log
          • Size 4KB
          • SHA256 10c0e30159cfeb3fdeb6ca129aad86e45908af5a193c71a76437a375bc2b0d7b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DirectX.log

          • Path C:\Windows\Logs\DirectX.log
          • Size 297B
          • SHA256 f05810089fedfc12417e795f87374ed3e8fdbfa7c80a544c97d875bfc97702ba
          • MD5 SHA1 SHA512 TLSH

          D3DX9_41.dll

          • Path C:\Windows\SysWOW64\D3DX9_41.dll
          • Size 4.0MB
          • SHA256 6ac4df203af419d3f3b7d9a99e14a3490ea3ad307c474bfe36baea642b1421f6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          XAudio2_6.dll

          • Path C:\Windows\SysWOW64\XAudio2_6.dll
          • Size 515KB
          • SHA256 61b57170f7c6365714396072d22cb98746718c0f44c9f0d5c62fdb1b218639c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Input.Touch.dll

          • Path C:\Windows\assembly\tmp\2NC23HLR\Microsoft.Xna.Framework.Input.Touch.dll
          • Size 22KB
          • SHA256 2191bad4540b50723acbda55bd2c6e5d80cc6f84ad989ff89ddda672348577b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Game.dll

          • Path C:\Windows\assembly\tmp\6GF224RN\Microsoft.Xna.Framework.Game.dll
          • Size 73KB
          • SHA256 a0347e9d9a646779a9bb1bd512af333ae07a3db65b3259fae3220ed87a80e756
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.dll

          • Path C:\Windows\assembly\tmp\8PMPKIMH\Microsoft.Xna.Framework.dll
          • Size 657KB
          • SHA256 8b7aa4c4939f243b21432747281cc8aacdcda56191a16d9eaa036b4136cf0da4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Net.dll

          • Path C:\Windows\assembly\tmp\A5BIA70W\Microsoft.Xna.Framework.Net.dll
          • Size 53KB
          • SHA256 3c0b37068ad56193fd613eb8f6bd321e7e08a99b9cf85606ccddf060afb1263b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Video.dll

          • Path C:\Windows\assembly\tmp\H3Q873V9\Microsoft.Xna.Framework.Video.dll
          • Size 17KB
          • SHA256 63c7673c936747abd9ebe779e8837c8b8add2c078a31216684fbf8c6bcab2745
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Xact.dll

          • Path C:\Windows\assembly\tmp\HDX1SS4Q\Microsoft.Xna.Framework.Xact.dll
          • Size 74KB
          • SHA256 6824bb0b7b42626d1ed5b7ab7e4dab4a380fa010175d4de0fadb1c3904e491d1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Storage.dll

          • Path C:\Windows\assembly\tmp\K57IU4WP\Microsoft.Xna.Framework.Storage.dll
          • Size 20KB
          • SHA256 7edbb80c699ce3ead8aee5a512ee34c7718cb5dceeb1d0577e788ad8d0ad9383
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.GamerServices.dll

          • Path C:\Windows\assembly\tmp\SVGVDYHZ\Microsoft.Xna.Framework.GamerServices.dll
          • Size 70KB
          • SHA256 627e84c06cc4e409870b068c9ec9149adba425e47e64185f92d839db2aa35484
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Graphics.dll

          • Path C:\Windows\assembly\tmp\UMQVRC98\Microsoft.Xna.Framework.Graphics.dll
          • Size 417KB
          • SHA256 39aed7fd8e308ccace5ce9390256f1c829ca72c2eccd97d4a0f629f24015d3a5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Xna.Framework.Avatar.dll

          • Path C:\Windows\assembly\tmp\ZQNN4V5S\Microsoft.Xna.Framework.Avatar.dll
          • Size 24KB
          • SHA256 7688ebdffc98433eef8aada293a8c4beec6d6acfc0e1f91ca8eb2f1c350e7cec
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 73c415a2dbbc505a0a377c9550a0c73e3d07307060e64d38c5372c2f7fcacba4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {2bf39509-408a-4aa9-afb3-8ba7518aa283}_OnDiskSnapshotProp

          • Path \??\Volume{82411472-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{2bf39509-408a-4aa9-afb3-8ba7518aa283}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 bd6fb1fcea2ac153032a9eb279aea446fe3d3f4357311a8470e31c24a87e045a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3804-46-0x00000000003D0000-0x00000000003E6000-memory.dmp

          memory/3804-43-0x0000021A546A0000-0x0000021A546AA000-memory.dmp

          memory/3804-34-0x0000021A54680000-0x0000021A5468C000-memory.dmp

          memory/3804-40-0x0000021A54690000-0x0000021A5469C000-memory.dmp

          memory/3804-31-0x0000000000360000-0x00000000003CC000-memory.dmp

          memory/3804-28-0x0000021A54850000-0x0000021A54868000-memory.dmp

          memory/3804-25-0x0000021A54830000-0x0000021A54848000-memory.dmp

          memory/3804-22-0x00000000002B0000-0x000000000035A000-memory.dmp

          memory/3804-19-0x0000021A54670000-0x0000021A5467C000-memory.dmp

          memory/3804-37-0x0000021A54870000-0x0000021A54884000-memory.dmp