Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/11/2026, 12:19

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 14.3MB
  • Sample261107-phancacz4p
  • SHA256 5e2220b3c4e0664a589a386e9c49e034b49ca0b06a25d6d6c0f6d39c25aed614
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 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.

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 10 IoCs
  • 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.

  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\7590ed4e1c1f6875\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:804
  • 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:4640
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 6DAE3AEAD7116273760E0A4B84E650CC C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4304
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240695593 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:396
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBDAF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240697031 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:5004
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIC476.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240698531 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4288
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4312
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E099E27C57D8246828693E41BE95D25B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2352
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 36B74684A277BC3CB5007DDD59A74B86 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1996
    • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-vffgqh-relay.screenconnect.com&p=443&s=ab8df67a-6b03-4fdb-ba78-33a1f4abdc01&k=BgIAAACkAABSU0ExAAgAAAEAAQANsnuCboAb1Hju755ews%2bUb4UnlKhBEWTPilYGN6m90zk8oqvg2WPAMYyXJNzz8bufc95z5y6G2oMvSk0mPEcqPwXSYp0gxmucy50jDifrq7mbTEuDX4kUgrPWpgrVxe1YNaXIEJdM89Ge7%2fJ3KSKU7nNx0z%2fAIGbOMXDwx7SIWDYog4KfOwdrAiQLTsaP2sJ1f6FM2tus7DHZr7OyigfdnmLF29vLFa7BkY%2fgeLjVvvF4lCOXXYlYZCv3OKCuo0ztGH%2f5Z2UGUyXlVDaUvJ4YkCwiG8tXJNevmAfufdcxDH9jddL7FBUuDFoLVBX1QU8xr7hmeRlfCKSIEQke3cq9&c=NEW&c=&c=KISH&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3512
      • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe" "RunRole" "0c8e0ce2-0324-476f-a86f-c43c0e530491" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4360
      • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe" "RunRole" "8957a386-c811-48e7-a509-7b6a06fd0c4e" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4732

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e590854.rbs

          • Path C:\Config.Msi\e590854.rbs
          • Size 214KB
          • SHA256 d64a49c98b2c640041ce0ccec45e879ba9fcd63b609ea15d2d6eaa4c68f19ff9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\app.config
          • Size 1KB
          • SHA256 6b6895cdaddf08e0d0859ef61ec8ba087290dc5836dedb95a180d42f381790e2
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\system.config
          • Size 954B
          • SHA256 1b9d22ad39f36aeef74ea5cb73c1c5dbf937d4531f59bc2753d99e3ba270856c
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 4fbe8fb4abdeece71c8d3de4f28b20e2e0e431f48774da4f9e5de0e7e70d87d3
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 8904b97a68ddfd63fb8f9b129e99f473ca00fc647a77d8e2c96d254bedda903d
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 605c52044039aa44c4a5409c3fb2b217f214fa28d437461d1d58ac879d61051e
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 27262b8fe1efc799eeb17a48af208da4fad2ddf0bf18c644eefe516be7abd50e
          • MD5 SHA1 SHA512 TLSH

          rundll32.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
          • Size 746B
          • SHA256 ddebb6b1094dbef9e96754a74ebd4761d857864c9bd0b5f20a97259a6d7c8fe0
          • MD5 SHA1 SHA512 TLSH

          MSIB89D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB89D.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

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

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBDAF.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\7590ed4e1c1f6875\ScreenConnect.ClientSetup.msi
          • Size 11.8MB
          • SHA256 68a53cb4e2da3d6a2ef08129f0a4f17f9e9529ff60d1f0548a93af7e4277fbfd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA09.tmp

          • Path C:\Windows\Installer\MSIA09.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          0nteftbx.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\0nteftbx.newcfg
          • Size 683B
          • SHA256 48ac61a3057048a5e5fe87d0e62d2544b195f15cabf3239781f8c2ac9ef404df
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\user.config
          • Size 520B
          • SHA256 da39569511f0c08d0e0a2d04b7be506b747846bf957883b1c79fad21a73a5b33
          • MD5 SHA1 SHA512 TLSH

          z4cw1ta4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\z4cw1ta4.newcfg
          • Size 884B
          • SHA256 9dd9244245e5121d65017fe2b8c5722f5868b7d0ba78676d947f250005cc97ca
          • MD5 SHA1 SHA512 TLSH

          memory/396-51-0x00000000053B0000-0x0000000005560000-memory.dmp

          memory/396-47-0x0000000005160000-0x00000000051F6000-memory.dmp

          memory/396-43-0x0000000002CF0000-0x0000000002CFC000-memory.dmp

          memory/396-39-0x0000000002CB0000-0x0000000002CDE000-memory.dmp

          memory/3512-210-0x00000000041D0000-0x000000000423C000-memory.dmp

          memory/3512-171-0x0000000003DD0000-0x0000000003E66000-memory.dmp

          memory/3512-175-0x0000000004020000-0x00000000041D0000-memory.dmp

          memory/3512-215-0x0000000004420000-0x00000000044F6000-memory.dmp

          memory/3512-211-0x0000000004240000-0x00000000042D2000-memory.dmp

          memory/3512-213-0x0000000003F80000-0x0000000003FC1000-memory.dmp

          memory/3512-189-0x0000000003F30000-0x0000000003F80000-memory.dmp

          memory/3512-165-0x00000000016C0000-0x00000000016DA000-memory.dmp

          memory/4352-0-0x0000000005930000-0x0000000005940000-memory.dmp

          memory/4352-5-0x0000000003270000-0x0000000003298000-memory.dmp

          memory/4352-8-0x0000000005930000-0x0000000005940000-memory.dmp

          memory/4352-7-0x00000000060B0000-0x0000000006654000-memory.dmp

          memory/4352-4-0x00000000058A0000-0x0000000005936000-memory.dmp

          memory/4352-2-0x0000000005930000-0x0000000005940000-memory.dmp

          memory/4352-6-0x0000000005940000-0x0000000005AF0000-memory.dmp

          memory/4352-3-0x0000000001B80000-0x0000000001B8C000-memory.dmp

          memory/4352-1-0x0000000001B60000-0x0000000001B68000-memory.dmp

          memory/4360-230-0x0000000000C20000-0x0000000000CD0000-memory.dmp

          memory/4360-231-0x000000001B800000-0x000000001B86C000-memory.dmp

          memory/4360-234-0x000000001BC10000-0x000000001BCA6000-memory.dmp

          memory/4360-235-0x000000001BE60000-0x000000001C010000-memory.dmp

          memory/4360-236-0x0000000002C40000-0x0000000002C5A000-memory.dmp

          memory/4360-237-0x000000001D250000-0x000000001D3D6000-memory.dmp

          memory/5004-83-0x0000000005310000-0x0000000005338000-memory.dmp