Analysis

  • max time kernel
    148s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/10/2026, 12:27

General

  • Target
    Mainnet_Update_V1.0.44.2.msi
  • Size 9.6MB
  • Sample261002-pm36fswwev
  • SHA256 b66415933fbe8512cd5d34a33d3673562b5498c92a0b1b2609bde414f51ccd9f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • ConnectWise ScreenConnect remote access tool

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

  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 22 IoCs
  • Badlisted process makes network request 1 IoCs

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

  • Enumerates connected drives 3 TTPs 47 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 Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 20 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 5 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\Mainnet_Update_V1.0.44.2.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:4320
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3800
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8BA3C3AEAD7D1FC4B481947E8D10EA84 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2592
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240710656 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2728
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:796
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding BCB68F96BAF883B19EB0E678DC507A46
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5520
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5BB0A39F35B4290F64C1E92C4EA9A377 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1988
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:460
    • C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-z6ajpe-relay.screenconnect.com&p=443&s=08240d53-8370-4aba-9f40-4097f367f682&k=BgIAAACkAABSU0ExAAgAAAEAAQDdKBd5NzOvp3FDVWjI5r0QVfkYsjnvoDYYiB149U7dPZDDMn6fV5pYUVluiCI1TfKt2yWG7rG50%2fGQb%2ff56q3UmYCqSd5VSO3jk87IeHHEwKyK9AVMCD9zKoNSrio58Is45fPJdqHcB9ivLgTr5CNmF25Tp6umaaxB0i%2by8qavQjR0C2OASGo74ddvYtzwzcqsb5UPiJwVqol%2baruxOV8tunL47IOFRbQXNTKURpK4PJcyIvag2X710nVj90cQWXcs%2fJ6j6MMAdSIScEwqblaMUEFk59vq8cIt2QHGuAwcW0G3NNx5KKOpr6V7u5akiLFoAnRAQSqc3sMIePBcB5vP"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2548
      • C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsClient.exe" "RunRole" "da187ecf-bb3f-4d20-bd33-8bdb38efd0d2" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3432

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59452e.rbs

          • Path C:\Config.Msi\e59452e.rbs
          • Size 214KB
          • SHA256 2235b7213727b64863ab14d39e6b6289a63df99ae39c10a0859269731aa10e43
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.Client.dll
          • Size 399KB
          • SHA256 dbaffdb4d49e5dba309f54b1fc110c236042ac82ccde029b2917e189edaf84d3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 c8102fc3bda354653fc1c80b500de20d1a6bb274826334f76817f595434d2f0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a33c975b07fc9db4713b6584965dd88b143d61b99c4d699dd326374b82dcd271
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.Core.dll
          • Size 553KB
          • SHA256 a98c8a07c4b819afb60d4372b2b8428d08cdd93571acb02750c8a17287ca613b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 416a10eb49239bc3aa1b32acfa31bb206a662ab9969043a7f5fe9d6455ebc07a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsClient.exe
          • Size 604KB
          • SHA256 a5c8ede4d24165797dcfbabbb85f62c44a79b058381e68249bf418a01fc67a1d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 7a94f9bc46ebc6285b6a9d2ee989357705707c7e03831ce22e6fae7d8d7b471c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8c57b93a6df0912e)\system.config
          • Size 954B
          • SHA256 bc157bfd80ade180f09cc4f45c5c4c5c4c3b8be97fac1211ab03b8f20432d671
          • MD5 SHA1 SHA512 TLSH

          MSIF289.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp
          • Size 1.1MB
          • SHA256 80c78c9e4eca39bdefdc9d47b9a8b49dfcc3fe1c0f135338584c7e83702d539a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp-\ScreenConnect.Core.dll
          • Size 543KB
          • SHA256 553ace16fbc4f84d8c66ca9a56797fffd527e61215aae4c09d79a55b7653a774
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 7071c7fa49e4b177126d58835d7df40ec0a18424d5c9110242d612fefb1974df
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF289.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 d7610baba5b37a3c52bc19aae6440e7631d1184a3934ebe64f836716b427490d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI4B0A.tmp

          • Path C:\Windows\Installer\MSI4B0A.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59452f.msi

          • Path C:\Windows\Installer\e59452f.msi
          • Size 9.6MB
          • SHA256 b66415933fbe8512cd5d34a33d3673562b5498c92a0b1b2609bde414f51ccd9f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 eafa3d37787e583d9b1f66c1ed79e15f85dd361350c347e896ff4ae3ad487ed8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {540fa8ab-1460-4cb1-890b-6898f5e19eed}_OnDiskSnapshotProp

          • Path \??\Volume{9cfaea72-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{540fa8ab-1460-4cb1-890b-6898f5e19eed}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 8c97a38be81c37246c92ba80f513102977616a6373608b135d1599f4efacf59a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2548-90-0x0000000003EA0000-0x0000000003F08000-memory.dmp

          memory/2548-84-0x0000000003F90000-0x000000000413E000-memory.dmp

          memory/2548-106-0x00000000043D0000-0x00000000044A5000-memory.dmp

          memory/2548-80-0x0000000003C80000-0x0000000003D0E000-memory.dmp

          memory/2548-101-0x0000000003E30000-0x0000000003E71000-memory.dmp

          memory/2548-74-0x0000000001680000-0x0000000001698000-memory.dmp

          memory/2548-95-0x00000000041E0000-0x0000000004272000-memory.dmp

          memory/2548-86-0x0000000003DE0000-0x0000000003E30000-memory.dmp

          memory/2728-32-0x00000000061E0000-0x000000000638E000-memory.dmp

          memory/2728-24-0x0000000003EC0000-0x0000000003ECA000-memory.dmp

          memory/2728-20-0x0000000003E90000-0x0000000003EBE000-memory.dmp

          memory/2728-28-0x0000000005FA0000-0x000000000602E000-memory.dmp

          memory/2728-33-0x0000000006950000-0x0000000006F0A000-memory.dmp

          memory/3432-112-0x0000000000300000-0x000000000039A000-memory.dmp

          memory/3432-114-0x000000001B3E0000-0x000000001B46E000-memory.dmp

          memory/3432-115-0x000000001B620000-0x000000001B7CE000-memory.dmp

          memory/3432-113-0x00000000027B0000-0x0000000002818000-memory.dmp

          memory/3432-116-0x000000001B960000-0x000000001BAE8000-memory.dmp

          memory/3432-117-0x0000000000D00000-0x0000000000D18000-memory.dmp

          memory/3432-118-0x00000000025F0000-0x0000000002608000-memory.dmp