Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 00:20

General

  • Target
    setup_Unassigned.msi
  • Size 8.2MB
  • Sample260604-amsbmaf13t
  • SHA256 a32103c537d72a55f7572df209daf30caadd8c167c4e37ccc6bba518832a8b13
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 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 53 IoCs
  • Suspicious use of FindShellTrayWindow 1 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\setup_Unassigned.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:5076
  • 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 WriteProcessMemory
    PID:2196
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5112
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding CD08654A3641A62445D8766A1D22E745
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4328
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI78F4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240679250 2 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.GenerateAgentId
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:5104
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI7A0E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240679453 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:3356
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:2460

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 471B
        • SHA256 4e593ca0dc9f3fcf33df5720194918f4c81e5c6798437b076a65618e986a6dcb
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 727B
        • SHA256 cbecae06db08d487e7c79cfa107369693f8b89ffff4a8e3deb6d29959d73aa64
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 727B
        • SHA256 4b642558ead3bb575c3ccd601c655effbe506e5434a5afa0c3accab7b7ef1005
        • MD5 SHA1 SHA512 TLSH

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 400B
        • SHA256 b42192f9ce4ca72cc9238115f6efde45e6f26764647f796d8f376667b7f3cc18
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 408B
        • SHA256 73c5e9d59ac7682fcad8d8e531c805e5c1e9de7807448f50264c60faeb6b267c
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 412B
        • SHA256 a8283f94836645738f4d839ca09f1a724f4046a9336cf2e0bb7b08317ef67a78
        • MD5 SHA1 SHA512 TLSH

        rundll32.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\rundll32.exe.log
        • Size 847B
        • SHA256 16f4a7736a0c2aee54256d3d75ce4c0816fabf130b3b92340deca34c5f5fda43
        • MD5 SHA1 SHA512 TLSH

        MSI78F4.tmp

        • Path C:\Windows\Installer\MSI78F4.tmp
        • Size 340KB
        • SHA256 1997e4959d6c187e9ae35097b4cc0702e8a1564acb1dec7b080adcaa9b973fd0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CustomAction.config

        • Path C:\Windows\Installer\SFXCA65DFB6D93B4CA759CBA9336768753745\CustomAction.config
        • Size 956B
        • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
        • MD5 SHA1 SHA512 TLSH

        WixToolset.Dtf.WindowsInstaller.dll

        • Path C:\Windows\Installer\SFXCA65DFB6D93B4CA759CBA9336768753745\WixToolset.Dtf.WindowsInstaller.dll
        • Size 193KB
        • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Atera.Agent.Installer.Msi.Ca.dll

        • Path C:\Windows\Installer\SFXCA941B5B384D437B6BA7D5E81A6F311D75\Atera.Agent.Installer.Msi.Ca.dll
        • Size 59KB
        • SHA256 46a2844072f1be835debc683da08d7a37d866c6a4a2b1bff79f9e4bae60d9403
        • MD5 SHA1 SHA512 SSDEEP TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 24.6MB
        • SHA256 3f787db2eada8b508c0764d8c59e56abae72f926833ddf72c211192f3cf93f5b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {8394216d-f696-417e-a45b-2957dabc7d63}_OnDiskSnapshotProp

        • Path \??\Volume{67a68b58-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{8394216d-f696-417e-a45b-2957dabc7d63}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 bae353efd4e1d88ac1f788e2a65c56956385950d92ad27b028837e29c91f0a60
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3356-60-0x00000240FCDB0000-0x00000240FCDC2000-memory.dmp

        memory/3356-61-0x00000240FCE10000-0x00000240FCE4C000-memory.dmp

        memory/5104-38-0x000001BD16720000-0x000001BD16734000-memory.dmp

        memory/5104-33-0x000001BD2EBF0000-0x000001BD2EC24000-memory.dmp