Analysis

  • max time kernel
    148s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/07/2026, 12:32

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260727-pqv91sep21
  • SHA256 179be2c0a94ad6f36dc48d8151430f80b72c8224fb5415ff8b06472a2f1c3694
  • 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.

  • 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 3 IoCs
  • Loads dropped DLL 42 IoCs
  • 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 18 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 13 IoCs
  • Suspicious use of SendNotifyMessage 11 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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\ScreenConnect.ClientSetup.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:1312
  • 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:1420
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8574C4F89C8F10AADA3E5B020CB49A21 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240721468 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3600
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI22E1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240722703 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3584
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2A93.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240724656 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4712
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3368
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A2FCC6B4FA9F85009F6CC6B0FC897DEA
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1872
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 68B76ACC3E04DBA025DA85875EC5CA2C E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2372
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4284
    • C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dhuc71-relay.screenconnect.com&p=443&s=945b32d2-4d98-4773-979e-e2bc6fa6b12b&k=BgIAAACkAABSU0ExAAgAAAEAAQDh%2fQVjN8RU51Qc0uYIqsc%2bm%2f6%2bKQu1k3WeWni4dRiVQvbbLPIAkdZLiQQoxmR4OlUZaNTEr1KQ2juFNDor%2bFB95DbXCKvEu1T%2bg9v8%2bfI0v%2buE68edx5MuB%2bZ7R%2bkrOJLCyK%2bztZVbWvQmlRwt4KhyFdYScy3oZRO0vvrAipAhzN7jNl7%2bPMHhP2S%2fUVZ7B2E%2bT9qF8CKkcCx8gidvrqg732NsFH9PVfsfnIZLoE4Mmds0kxfmnVPk5d2Cil97f%2f5nwrbeogWbE99cjG40d6XjS4LyYdilTXHTeOc4OjxfNfTtt7NE3XpQgCehoyNI1q4Pn6e3MgvzsVejL9K8W5Lh"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe" "RunRole" "552fbc86-2d9e-465b-b51e-f170648167e9" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4076
      • C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe" "RunRole" "20792b4c-101f-472f-9a12-f636d8ccd7a9" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1536

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e598600.rbs

          • Path C:\Config.Msi\e598600.rbs
          • Size 214KB
          • SHA256 214f8538fa3bab48a81ea321f3a2b7b0244ec7b1356eaca96bc562e9506c6b4a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (3f134dfc0dbdd1b5)\system.config
          • Size 974B
          • SHA256 db8e5b746565067e14d505a326647da3cc7117a7cdfd11f4f0fad0ea3087410c
          • MD5 SHA1 SHA512 TLSH

          MSI1CB6.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1CB6.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22E1.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22E1.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8C1A.tmp

          • Path C:\Windows\Installer\MSI8C1A.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5985ff.msi

          • Path C:\Windows\Installer\e5985ff.msi
          • Size 9.8MB
          • SHA256 179be2c0a94ad6f36dc48d8151430f80b72c8224fb5415ff8b06472a2f1c3694
          • MD5 SHA1 SHA512 SSDEEP TLSH

          a5fgyvyl.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\a5fgyvyl.newcfg
          • Size 880B
          • SHA256 2032af8e5496cef1fcbae7a71b951168be4ff588ec8673a4fb18bc3deb52c6d0
          • MD5 SHA1 SHA512 TLSH

          r0ix0001.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\r0ix0001.newcfg
          • Size 880B
          • SHA256 8bf926b573153945051b6493ba3bb9402f45a2cff8db336c4fa0de90e6ff4902
          • MD5 SHA1 SHA512 TLSH

          svp4hfzk.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\svp4hfzk.newcfg
          • Size 683B
          • SHA256 a61b34073aaec40852413ca5c3544baab600e8e7929d9287f1d9cd809a0b448a
          • MD5 SHA1 SHA512 TLSH

          t4esx2z2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\t4esx2z2.newcfg
          • Size 880B
          • SHA256 0944b1039e12d80b5068ce7e80e64a9d93439015f523042f4cf3b2913f27e85e
          • MD5 SHA1 SHA512 TLSH

          uj1r3rcu.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\uj1r3rcu.newcfg
          • Size 880B
          • SHA256 91e6b1e41f422642dd2ded14b0b56af9551134eb01d5dc4d90bccb94e884ceb1
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3f134dfc0dbdd1b5)\user.config
          • Size 520B
          • SHA256 b93eff06818292b3aba716dca42e131f8ea517eb153fcdfeae93f8e2359fd1b6
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 1b845e0753528cd37954aa84dc5c87c3695ecca8521fc375eca7a4140748c82b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {56993b63-ae66-41cc-b3c3-d0fd6abf5277}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{56993b63-ae66-41cc-b3c3-d0fd6abf5277}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b97c382e5dcef8f60c7a1ab80b89f4d229ad9a829b4886f418a401532ff37fd5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1536-258-0x0000000002650000-0x0000000002691000-memory.dmp

          memory/2028-186-0x0000000004310000-0x0000000004351000-memory.dmp

          memory/2028-188-0x0000000004680000-0x0000000004756000-memory.dmp

          memory/2028-184-0x0000000004490000-0x0000000004522000-memory.dmp

          memory/2028-151-0x0000000004160000-0x0000000004310000-memory.dmp

          memory/2028-183-0x0000000004380000-0x00000000043EC000-memory.dmp

          memory/2028-141-0x0000000001860000-0x000000000187A000-memory.dmp

          memory/2028-159-0x0000000004100000-0x0000000004150000-memory.dmp

          memory/2028-147-0x0000000003F10000-0x0000000003FA4000-memory.dmp

          memory/3584-64-0x00000000058C0000-0x00000000058E8000-memory.dmp

          memory/3600-29-0x00000000059F0000-0x0000000005A84000-memory.dmp

          memory/3600-21-0x0000000005920000-0x000000000594E000-memory.dmp

          memory/3600-25-0x00000000038F0000-0x00000000038FC000-memory.dmp

          memory/3600-33-0x0000000005C60000-0x0000000005E10000-memory.dmp

          memory/3600-34-0x00000000063D0000-0x000000000698A000-memory.dmp

          memory/4076-209-0x000000001B1C0000-0x000000001B254000-memory.dmp

          memory/4076-210-0x000000001B410000-0x000000001B5C0000-memory.dmp

          memory/4076-211-0x00000000022B0000-0x00000000022CA000-memory.dmp

          memory/4076-212-0x000000001B750000-0x000000001B8D8000-memory.dmp

          memory/4076-207-0x00000000000C0000-0x000000000016E000-memory.dmp

          memory/4076-208-0x000000001AD60000-0x000000001ADCC000-memory.dmp