Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/10/2026, 15:10

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 19.8MB
  • Sample261020-skb6qsbs8v
  • SHA256 98a2b9bbbf3173f34d120fa52a3debe19f14b041ba128e58777e26bafad7902d
  • 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 16 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:2404
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\b4f4b06bd0de9ff4\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:3524
  • 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:4508
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 40C8CEEA0B83A9DDBB3106DD2AF7B5AE C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1968
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSICACD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240700234 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:852
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID0AA.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240701640 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:3016
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID8E8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240703781 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1316
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3308
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding AF0028DCB5BF5CD117EC941FE07FA01B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:408
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E8CA1D4A4CF3888A562012D3DFD5BE93 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3532
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2304
    • C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-tipnzn-relay.screenconnect.com&p=443&s=dbacfec6-3d64-4c22-9e3c-ac7437bc996b&k=BgIAAACkAABSU0ExAAgAAAEAAQCR21Jclmt8X7ckACtWfDDPXbErXnr6NdWW5BsYC%2fW%2fwX%2f%2bdRP0yhB%2bg%2f7mfmQa3YEsn3Rxwultms5bAu6lbBSYA2chpyftux9ZgVXVsrVPHoSzNvBGFT9t7sRX8pSUerUTpSEc6BYn67ChvL9pZ6ZvUPZYWUPuiECrbV3XVyPZ3Ww3tXKLITGWe9PtfZ5503EGOTSjzwI9W9MOV5DHRnEHfDpxORbEGItUCScy43Y6hHsTJ0Nk8l0qvr%2fRKlhnW5MqwOVB4a2O9Q1BqcTzyvFqdrHuGdHH6htjn%2fDctcZ3WGPQT95CAigWKBUl%2fqlJzyZbLitJp9Ik3azzw4FVy4v1&c=SO1&c=&c=&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:2128
      • C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsClient.exe" "RunRole" "8cb4eb8e-84c4-427f-8caa-0818e6a70f69" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2224
      • C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsClient.exe" "RunRole" "7cb770f0-5eb4-4cb6-8091-fc73e03dc515" "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:3836

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e591c97.rbs

          • Path C:\Config.Msi\e591c97.rbs
          • Size 214KB
          • SHA256 37c8a4a3d65553a59a2700168587bed4e72bc190312e78e06f42b07cbd07e72c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.Client.dll
          • Size 615KB
          • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.ClientService.dll
          • Size 176KB
          • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.Windows.dll
          • Size 1.9MB
          • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b4f4b06bd0de9ff4)\system.config
          • Size 962B
          • SHA256 edcfad7ce77cb2e54419903679123ad0847df77683657656196b0f06b4c3783a
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 9732f03480ba7aa7c68b2bf5a6b4e5ac8ab3ca6a019a7a4d51d063de8374a973
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 c7ee00eb60772fca16236a7e5c8742754ac233935178d5f415ac084d693072a5
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 2f86ad2f82634f72bece50ad10bd749cbf1271f8fdb0e3450ed06262c4f44ac2
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 81f9ccfe412aa5f399a4305ea585504000c43791edd7f47276936f3c32fac03c
          • 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

          MSICACD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSICACD.tmp
          • Size 1.9MB
          • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

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

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICACD.tmp-\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICACD.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICACD.tmp-\ScreenConnect.Windows.dll
          • Size 1.8MB
          • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSID0AA.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID0AA.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 390KB
          • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\b4f4b06bd0de9ff4\ScreenConnect.ClientSetup.msi
          • Size 16.2MB
          • SHA256 463e94491802bceeecb25dcb89bf1f298c5ab2f27a71f0117d03d7f06bfc333a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI1ECA.tmp

          • Path C:\Windows\Installer\MSI1ECA.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          c5ca552m.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b4f4b06bd0de9ff4)\c5ca552m.newcfg
          • Size 884B
          • SHA256 b01bc20cfd67f90a3b960f3a6dc461424e4bf7d34c5f2172e157afd0cf30cfba
          • MD5 SHA1 SHA512 TLSH

          l5ez345w.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b4f4b06bd0de9ff4)\l5ez345w.newcfg
          • Size 683B
          • SHA256 7968479170224f8b6c7bc01f5df3e84aa3e8a84d67f069ef4d9ca07941256e01
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b4f4b06bd0de9ff4)\user.config
          • Size 520B
          • SHA256 b0f387b61a980219c948b467c32f6290f73e772100cc206ae667077e6ad9f110
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 e35a156f29e04f2e98be4947451c1a751d32374577ba4e4b8cdfe6dfcc7f2123
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {ab19925c-8d97-4df7-be70-a83a28fc427d}_OnDiskSnapshotProp

          • Path \??\Volume{ba718129-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{ab19925c-8d97-4df7-be70-a83a28fc427d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 a7875b7b707ac10022bd8e14261b8c8b3ead4b28d1bcbce954fa1dc92895a247
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/852-43-0x00000000050F0000-0x00000000050FC000-memory.dmp

          memory/852-51-0x00000000055A0000-0x0000000005780000-memory.dmp

          memory/852-39-0x00000000050B0000-0x00000000050DE000-memory.dmp

          memory/852-47-0x0000000005260000-0x00000000053BA000-memory.dmp

          memory/2128-213-0x0000000004380000-0x0000000004456000-memory.dmp

          memory/2128-166-0x00000000039F0000-0x0000000003A20000-memory.dmp

          memory/2128-211-0x0000000003DF0000-0x0000000003E31000-memory.dmp

          memory/2128-172-0x0000000003C80000-0x0000000003DDA000-memory.dmp

          memory/2128-209-0x00000000041A0000-0x0000000004232000-memory.dmp

          memory/2128-176-0x0000000003FC0000-0x00000000041A0000-memory.dmp

          memory/2128-208-0x0000000003F20000-0x0000000003FBE000-memory.dmp

          memory/2128-188-0x0000000003E30000-0x0000000003E80000-memory.dmp

          memory/2224-233-0x000000001D4E0000-0x000000001D666000-memory.dmp

          memory/2224-231-0x000000001BF10000-0x000000001C06A000-memory.dmp

          memory/2224-232-0x000000001C250000-0x000000001C430000-memory.dmp

          memory/2224-229-0x0000000000CE0000-0x0000000000E76000-memory.dmp

          memory/2224-234-0x000000001B860000-0x000000001B890000-memory.dmp

          memory/2224-230-0x000000001BA10000-0x000000001BAAE000-memory.dmp

          memory/2224-235-0x0000000002F10000-0x0000000002F51000-memory.dmp

          memory/2404-0-0x00000000043E0000-0x00000000043F0000-memory.dmp

          memory/2404-2-0x00000000043E0000-0x00000000043F0000-memory.dmp

          memory/2404-1-0x0000000004330000-0x0000000004338000-memory.dmp

          memory/2404-3-0x0000000004350000-0x000000000435C000-memory.dmp

          memory/2404-4-0x00000000069D0000-0x0000000006B2A000-memory.dmp

          memory/2404-5-0x0000000006B30000-0x0000000006B98000-memory.dmp

          memory/2404-6-0x00000000043E0000-0x00000000043F0000-memory.dmp

          memory/2404-7-0x0000000006BA0000-0x0000000006D80000-memory.dmp

          memory/2404-8-0x0000000007330000-0x00000000078D4000-memory.dmp

          memory/3016-83-0x0000000004DC0000-0x0000000004E28000-memory.dmp