Analysis

  • max time kernel
    148s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/09/2026, 00:18

General

  • Target
    AdobeReaderDC.Setup.msi
  • Size 8.2MB
  • Sample260913-alt4tscd96
  • SHA256 ef46fbb7d4850ace50bef6c64897d5e68bed4d9f93ce353fb052451f175b1551
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Loads dropped DLL 8 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 Windows directory 11 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 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\AdobeReaderDC.Setup.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5880
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4880
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 397BABE97064D2D9DD0D06034460D54D
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIB22F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240759890 2 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.GenerateAgentId
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        PID:3212
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIB59B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240760296 6 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ShouldContinueInstallation
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4312
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:5488
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1764

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          MSIB22F.tmp

          • Path C:\Windows\Installer\MSIB22F.tmp
          • Size 337KB
          • SHA256 ad0fe30360c7f5611ae0916cbd13643acf35f0c28970f88042e7da9c9d1d2286
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Windows\Installer\SFXCA0FA0B03FCA4FEEDB925777766C6AEEA0\CustomAction.config
          • Size 956B
          • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
          • MD5 SHA1 SHA512 TLSH

          WixToolset.Dtf.WindowsInstaller.dll

          • Path C:\Windows\Installer\SFXCA0FA0B03FCA4FEEDB925777766C6AEEA0\WixToolset.Dtf.WindowsInstaller.dll
          • Size 193KB
          • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Atera.Agent.Installer.Msi.Ca.dll

          • Path C:\Windows\Installer\SFXCAFF7F43A17449FED8D605472250BDC323\Atera.Agent.Installer.Msi.Ca.dll
          • Size 46KB
          • SHA256 6e89d3fe94f7df726c6cfd21a30dc8b1d3b1993246afc3b5f9664447188fd721
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 28333bc557cb477cafdfc9df2e06dc75a40c4ed4380161e872311d8df1ed63b6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {7aba60ab-b379-4791-9f37-3df7520ce9b4}_OnDiskSnapshotProp

          • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{7aba60ab-b379-4791-9f37-3df7520ce9b4}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 fabeda0e85573b689b5f4a7137b6e7db2b35607c719dab206a2cd2c29cf11c75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3212-18-0x0000027D766F0000-0x0000027D76724000-memory.dmp

          memory/3212-22-0x0000027D74E50000-0x0000027D74E60000-memory.dmp

          memory/4312-40-0x0000026BA98F0000-0x0000026BA9902000-memory.dmp

          memory/4312-41-0x0000026BC1AD0000-0x0000026BC1B0C000-memory.dmp