Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/02/2026, 16:11

General

  • Target
    1f12c8b6d7094286f3d9965c4563c3ee53a0e4d19cf4a111e7519d0829ffa08e.msi
  • Size 9.6MB
  • Sample260203-tm6nsshv5f
  • SHA256 1f12c8b6d7094286f3d9965c4563c3ee53a0e4d19cf4a111e7519d0829ffa08e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Badlisted process makes network request 2 IoCs

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

  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 3 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 22 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 18 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of WriteProcessMemory 8 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\1f12c8b6d7094286f3d9965c4563c3ee53a0e4d19cf4a111e7519d0829ffa08e.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3240
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • 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:5052
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 00D9E8EE65D0B8366D72561A482C5866 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5888
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240644921 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1040
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5376
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 822A5C387BCA340F943477113992AC44
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1376
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 703BB95496C9644C580081EDDA8DF6EE E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5272
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4284
    • C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-bbxewm-relay.screenconnect.com&p=443&s=60016cfe-9f84-47f1-bbe6-bf6e4d58cf30&k=BgIAAACkAABSU0ExAAgAAAEAAQAduc2Koyv5VNeOauJa%2fdWdhG6oOvsMlbrZFd3RvxWhTjvDErnZsgEYUQnW8CF6%2fnzxX6hZ5J102ul4SCcdw9n69qbBMXapL%2fDb2F0WFtgbd3y0Une0oZii7bGKhidWQNlkjw5rcwBjFSn2q%2bBtLUn9u%2fJ5h9Oqw63g4r6cDC1SY4PplvVPffx86JmKE8sBzSHx0TP8U%2bE2qhHz%2f%2bX%2f%2fSGC%2fG9oRL37vvGlMj%2bpFqgp744zt6MupS6S0kEFcpEw2Nw5MXJpvnpa7%2bvbHq6B42GerG%2fhU1MoFjODms7i183Zd1eHNcJNCaYpWEONpmItM9eLnN3trgDivJmr7TP2o2W4"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3588
      • C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe" "RunRole" "234e66db-fcf4-462c-8a25-6ef58e206577" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2068
      • C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe" "RunRole" "65eee5f8-ae45-4377-be4f-b24d0545ef10" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3560
      • C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe" "RunRole" "f2bd5481-42a4-49b7-94cf-a9ae9ece3169" "System"
        2⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:688

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e582660.rbs

          • Path C:\Config.Msi\e582660.rbs
          • Size 214KB
          • SHA256 14c248a337de1b1a1aa8dc0e29935820f34c4b381d7a3c29d917fc399010bcb6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.Client.dll
          • Size 399KB
          • SHA256 dbaffdb4d49e5dba309f54b1fc110c236042ac82ccde029b2917e189edaf84d3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 c8102fc3bda354653fc1c80b500de20d1a6bb274826334f76817f595434d2f0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a33c975b07fc9db4713b6584965dd88b143d61b99c4d699dd326374b82dcd271
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.Core.dll
          • Size 553KB
          • SHA256 a98c8a07c4b819afb60d4372b2b8428d08cdd93571acb02750c8a17287ca613b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 416a10eb49239bc3aa1b32acfa31bb206a662ab9969043a7f5fe9d6455ebc07a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe
          • Size 604KB
          • SHA256 a5c8ede4d24165797dcfbabbb85f62c44a79b058381e68249bf418a01fc67a1d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 7a94f9bc46ebc6285b6a9d2ee989357705707c7e03831ce22e6fae7d8d7b471c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (80d3d7e198c0fd51)\system.config
          • Size 972B
          • SHA256 ee7b64e60fcca89ea6078b5d44cf566a4d5b4febe9126844acf592070c10e2b6
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 727B
          • SHA256 be3452470026f99bf03786787745a4c57278afabd81dba12cc078f7a6c7e5cea
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 408B
          • SHA256 a2c71489971c09843de5c1a4d394705c591300fe248cfa1c2663fef2f66600a9
          • MD5 SHA1 SHA512 TLSH

          MSIF2BC.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp
          • Size 1.1MB
          • SHA256 80c78c9e4eca39bdefdc9d47b9a8b49dfcc3fe1c0f135338584c7e83702d539a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp-\ScreenConnect.Core.dll
          • Size 543KB
          • SHA256 553ace16fbc4f84d8c66ca9a56797fffd527e61215aae4c09d79a55b7653a774
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 7071c7fa49e4b177126d58835d7df40ec0a18424d5c9110242d612fefb1974df
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF2BC.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 d7610baba5b37a3c52bc19aae6440e7631d1184a3934ebe64f836716b427490d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2873.tmp

          • Path C:\Windows\Installer\MSI2873.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58265f.msi

          • Path C:\Windows\Installer\e58265f.msi
          • Size 9.6MB
          • SHA256 1f12c8b6d7094286f3d9965c4563c3ee53a0e4d19cf4a111e7519d0829ffa08e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.log

          • Path C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ScreenConnect.WindowsClient.exe.log
          • Size 1KB
          • SHA256 b55ffe7ed15b4a95676ccb59a38fa6ea7b0136642c39ff0ca5a4dab85fa4abda
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 fb6d97e82352246b60b1b2fc0a7c2f65ff21be7314d8dfbdf885c007f42c2719
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {499b4db9-cc85-4e2c-999c-1fc38140db62}_OnDiskSnapshotProp

          • Path \??\Volume{d3d389e6-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{499b4db9-cc85-4e2c-999c-1fc38140db62}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 e6adc58014893caedad6d23b2f00f63a3d26d37a3b2fa9d8b92c96dcabec828e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/688-134-0x0000000180000000-0x0000000180055000-memory.dmp

          memory/1040-27-0x0000000004D60000-0x0000000004D6A000-memory.dmp

          memory/1040-35-0x0000000005040000-0x00000000051EE000-memory.dmp

          memory/1040-31-0x0000000004E00000-0x0000000004E8E000-memory.dmp

          memory/1040-36-0x00000000057A0000-0x0000000005D46000-memory.dmp

          memory/1040-23-0x0000000004D30000-0x0000000004D5E000-memory.dmp

          memory/2068-127-0x0000000002310000-0x0000000002328000-memory.dmp

          memory/2068-126-0x0000000000800000-0x0000000000818000-memory.dmp

          memory/2068-123-0x000000001B020000-0x000000001B0AE000-memory.dmp

          memory/2068-125-0x000000001C220000-0x000000001C3A8000-memory.dmp

          memory/2068-121-0x0000000000040000-0x00000000000DA000-memory.dmp

          memory/2068-122-0x000000001ACB0000-0x000000001AD18000-memory.dmp

          memory/2068-124-0x000000001B260000-0x000000001B40E000-memory.dmp

          memory/3588-110-0x00000000047B0000-0x00000000047F1000-memory.dmp

          memory/3588-90-0x00000000048A0000-0x0000000004A4E000-memory.dmp

          memory/3588-86-0x0000000004660000-0x00000000046EE000-memory.dmp

          memory/3588-112-0x0000000004CE0000-0x0000000004DB5000-memory.dmp

          memory/3588-80-0x0000000004440000-0x0000000004458000-memory.dmp

          memory/3588-108-0x0000000004AF0000-0x0000000004B82000-memory.dmp

          memory/3588-107-0x0000000004820000-0x0000000004888000-memory.dmp

          memory/3588-103-0x0000000004760000-0x00000000047B0000-memory.dmp