Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/04/2026, 01:23

General

  • Target
    Home Days.msi
  • Size 28.2MB
  • Sample260420-brzryabs3x
  • SHA256 94e9c184bacfd60f5756515d39cbe3293dd8b33f5841976eafb4e64c91467004
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 Windows directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Checks processor information in registry 2 TTPs 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 6 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\Home Days.msi"
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3404
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4964
      • C:\Windows\system32\wscript.exe
        wscript.exe //B //E:vbscript "CpHhpZBLlvx.vbs"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2168
        • C:\Users\Admin\AppData\Local\eFZHHK\fVqRvQvGjggjLRLgKigg.exe
          "C:\Users\Admin\AppData\Local\eFZHHK\fVqRvQvGjggjLRLgKigg.exe" "C:\Users\Admin\AppData\Local\eFZHHK\rUpUtbpPeqPsRcv"
          3⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Suspicious use of WriteProcessMemory
          PID:1268
          • C:\Users\Admin\AppData\Local\eFZHHK\fVqRvQvGjggjLRLgKigg.exe
            C:\Users\Admin\AppData\Local\eFZHHK\fVqRvQvGjggjLRLgKigg.exe C:\Users\Admin\AppData\Local\eFZHHK\zuSuHXEkf
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:3332
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              C:\Program Files\Google\Chrome\Application\chrome.exe
              5⤵
                PID:3292
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                5⤵
                  PID:4312
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Checks SCSI registry key(s)
          • Suspicious use of AdjustPrivilegeToken
          PID:764
        • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
          "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
          1⤵
            PID:1068
          • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
            "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
            1⤵
              PID:1756

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  e5837c5.rbs

                  • Path C:\Config.Msi\e5837c5.rbs
                  • Size 9KB
                  • SHA256 ef2f3cd0111bf773944f47d3755cdae1fc1d8a58f678a1cbeddd4dbdb8bd6cbf
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  fl62jtiwsn1s4620.node

                  • Path C:\Users\Admin\AppData\Local\Temp\fl62jtiwsn1s4620.node
                  • Size 373KB
                  • SHA256 420470634f5cf449e7835827ffe2d60393a1bde789275cde108b70f28ab39fd4
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  CpHhpZBLlvx.vbs

                  • Path C:\Users\Admin\AppData\Local\eFZHHK\CpHhpZBLlvx.vbs
                  • Size 593B
                  • SHA256 e310e638cf53e8200bb4ba7f21a708fd66c3e1b9b0aba8d302a614c567c0cddb
                  • MD5 SHA1 SHA512 TLSH

                  rUpUtbpPeqPsRcv

                  • Path C:\Users\Admin\AppData\Local\eFZHHK\rUpUtbpPeqPsRcv
                  • Size 307KB
                  • SHA256 10767cc438958f763b6c3336b4c02b79c7779cb413c76c4fda393a6b9681f2a2
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  zuSuHXEkf

                  • Path C:\Users\Admin\AppData\Local\eFZHHK\zuSuHXEkf
                  • Size 2.5MB
                  • SHA256 0f22d105dea8b3597d9e7925a3298e16a53b945f5f72cef9ca8cc71bcacbc5f2
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  zuSuHXEkf

                  • Path C:\Users\Admin\AppData\Local\eFZHHK\zuSuHXEkf
                  • Size 1.8MB
                  • SHA256 ed51daa95d49bcdd87d59aead43149447845568f8893e52e8cce6c6fa108d727
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  zuSuHXEkf

                  • Path C:\Users\Admin\AppData\Local\eFZHHK\zuSuHXEkf
                  • Size 1.8MB
                  • SHA256 b6b0ef9bc71380745bad281d09ac7ef69fc4feb304c7c5608e7484aa839e1481
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  e5837c4.msi

                  • Path C:\Windows\Installer\e5837c4.msi
                  • Size 28.2MB
                  • SHA256 94e9c184bacfd60f5756515d39cbe3293dd8b33f5841976eafb4e64c91467004
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  metadata-2

                  • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                  • Size 24.6MB
                  • SHA256 092dd68931e3f70d554672a96703f673b2ada141320c966fffcebbf6b55542d5
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  {b438734e-5aac-4f95-a5a0-29ccecf9871c}_OnDiskSnapshotProp

                  • Path \??\Volume{a37a13d3-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{b438734e-5aac-4f95-a5a0-29ccecf9871c}_OnDiskSnapshotProp
                  • Size 6KB
                  • SHA256 bff402027d2d4d9c51ac565d25ec5c87d43f0d3d057b1cdaff261bd99746e36a
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  memory/1268-42-0x000001E63BA80000-0x000001E63BAB1000-memory.dmp

                  memory/2168-34-0x000001F4F6780000-0x000001F4F678C000-memory.dmp

                  memory/2168-33-0x000001F4F4E50000-0x000001F4F4E81000-memory.dmp

                  memory/3332-50-0x00007FF8EAD00000-0x00007FF8EB832000-memory.dmp

                  memory/3332-63-0x0000029ECDA10000-0x0000029ECDA41000-memory.dmp

                  memory/3332-65-0x0000029ECFCF0000-0x0000029ECFCF9000-memory.dmp

                  memory/3332-64-0x00007FF8EAD00000-0x00007FF8EB832000-memory.dmp

                  memory/3332-81-0x0000029ECDA10000-0x0000029ECDA41000-memory.dmp

                  memory/3332-82-0x00007FF8EAD00000-0x00007FF8EB832000-memory.dmp

                  memory/3404-3-0x000001CECBDF0000-0x000001CECBE21000-memory.dmp

                  memory/3404-30-0x000001CECBDF0000-0x000001CECBE21000-memory.dmp