Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 18:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 13.9MB
  • Sample260820-wtyymsgp8x
  • SHA256 9a6a2a3a88cde3da3256143d6094219a252adae010ad19886119a4fd82a663bc
  • 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 18 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:4348
  • 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:4964
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding F3359CB9AA72369FBD183B429951B8FC C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5908
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240755890 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:936
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAB99.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240757875 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4008
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB36A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240759687 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3416
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1080
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2C16BD1D5970AE7C5388641068C04095
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3648
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 428108A4004DD20ED7C7EB31FAEB4D39 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1612
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5556
    • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-coavq0-relay.screenconnect.com&p=443&s=3553f084-68c6-4235-bd9c-9ec5662f1b7f&k=BgIAAACkAABSU0ExAAgAAAEAAQCBO9tPvg5qPurW6qEvp9bUmW9mYzEm7o6yAFHTWSiFpJUPxyd86wxZabgPwagG7A6%2fXKMmY0E1n%2boZQO9a7xuH9q5G2JGTdmiFAM0w%2f7km1A%2b2nB6dNxYxc77fGCOp2OMgPv%2bFuFtWrvzeCyA7RzqeBVPJtzohXZk7kmhY2I01AwWEzFkHCexhIxD9AVRLThFZhImG%2bylaxX9ORTvzfvFaTxVCRnMte9pCKtjtTTw8M6jMBV17r4SXYpS0KUpcksBoo%2bozl1Jcq3eOEh34SUskDA29Qxg%2fF%2fBjBkLmO%2b99bBzOP0S1dWcjhJSaB7nffgZS951U4%2fC1FlYivi4oU2vh&c=Eye%20Clinic&c=&c=Surgery&c=Personal&c=&c=&c=&c="
      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:6076
      • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "403ee5b6-9178-468c-a950-82f202b0ba18" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4900
      • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "c8265da7-9987-4254-a4fa-ed42d0112e2b" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3384

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a0503.rbs

          • Path C:\Config.Msi\e5a0503.rbs
          • Size 214KB
          • SHA256 b4fbaec51f41009bbe2ae687c41595dc674bc8693a867ce8be3d88d784e2472d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.Override.en-US.resources
          • Size 256B
          • SHA256 28b9226583d81800feaa9909bd0b0bf8a44bcbd97e66246c1d17162582fd46b3
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\app.config
          • Size 1KB
          • SHA256 153a4b7722eae4a903301c18977dc8a803ca2c28464a0a25adba687c62f194d7
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\system.config
          • Size 966B
          • SHA256 ed4ff0cac6b33b29810e91bc1cc07f41c37f5ec7eae787f70d9237477dbb8412
          • MD5 SHA1 SHA512 TLSH

          MSIA389.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA389.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAB99.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAB99.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIB4D.tmp

          • Path C:\Windows\Installer\MSIB4D.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a0502.msi

          • Path C:\Windows\Installer\e5a0502.msi
          • Size 13.9MB
          • SHA256 9a6a2a3a88cde3da3256143d6094219a252adae010ad19886119a4fd82a663bc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          4lkba4hl.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\4lkba4hl.newcfg
          • Size 883B
          • SHA256 eed9febbf4aebe6d887bef2588127b371a2bdc23d9d78bf9d650b6c6a4bb0bdc
          • MD5 SHA1 SHA512 TLSH

          4qd4c4jw.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\4qd4c4jw.newcfg
          • Size 683B
          • SHA256 5e2081e2dcac13454949600b9199b5715d8024413b656207e1a74e0cd2c52c79
          • MD5 SHA1 SHA512 TLSH

          dp2dg241.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\dp2dg241.newcfg
          • Size 883B
          • SHA256 e80cdb107cd1612cb22353d365ffe93d5ce2c07349ab3eb0b56a21a1b82cd470
          • MD5 SHA1 SHA512 TLSH

          eptzo3zk.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\eptzo3zk.newcfg
          • Size 883B
          • SHA256 70fce935a33bd2abce6bc97cd3b38e37c3c993f58b46af93882b8503cbefebcd
          • MD5 SHA1 SHA512 TLSH

          sthfkw2q.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\sthfkw2q.newcfg
          • Size 883B
          • SHA256 4976b6f9141e0da8ed9cde0fa14b932094a3a812e1196d0074b3fcf995e1258e
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\user.config
          • Size 520B
          • SHA256 5750f2579c122d27f36df6c418ee0a4904ab2bd0116b3c9686d06f395f07fafc
          • MD5 SHA1 SHA512 TLSH

          {9f2e635b-5ecc-4f2b-94f3-7e906a50c0e1}_OnDiskSnapshotProp

          • Path \??\Volume{6392210f-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9f2e635b-5ecc-4f2b-94f3-7e906a50c0e1}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 ffc847f5129a2d94497a8335b76c02201cf0cce8f8cab414aa937d73e944f5d5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/936-33-0x0000000005840000-0x00000000059F0000-memory.dmp

          memory/936-34-0x0000000005FB0000-0x000000000656A000-memory.dmp

          memory/936-21-0x00000000054F0000-0x000000000551E000-memory.dmp

          memory/936-29-0x00000000055F0000-0x0000000005684000-memory.dmp

          memory/936-25-0x0000000005520000-0x000000000552C000-memory.dmp

          memory/4008-64-0x0000000003A80000-0x0000000003AA8000-memory.dmp

          memory/4900-212-0x000000001B8B0000-0x000000001B91C000-memory.dmp

          memory/4900-214-0x000000001BF10000-0x000000001C0C0000-memory.dmp

          memory/4900-216-0x000000001C250000-0x000000001C3D8000-memory.dmp

          memory/4900-215-0x0000000001620000-0x000000000163A000-memory.dmp

          memory/4900-211-0x0000000000BF0000-0x0000000000C9E000-memory.dmp

          memory/4900-213-0x000000001BCC0000-0x000000001BD54000-memory.dmp

          memory/6076-186-0x0000000004690000-0x00000000046FC000-memory.dmp

          memory/6076-189-0x0000000004620000-0x0000000004661000-memory.dmp

          memory/6076-187-0x00000000047A0000-0x0000000004832000-memory.dmp

          memory/6076-191-0x0000000004990000-0x0000000004A66000-memory.dmp

          memory/6076-167-0x00000000045D0000-0x0000000004620000-memory.dmp

          memory/6076-153-0x00000000043D0000-0x0000000004580000-memory.dmp

          memory/6076-149-0x0000000004180000-0x0000000004214000-memory.dmp

          memory/6076-143-0x0000000003F50000-0x0000000003F6A000-memory.dmp