Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/10/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 14.0MB
  • Sample261029-w2celsdz21
  • SHA256 54809cd170349fab525aaea518434cb9980febd246f8db8442808cdb4b66223f
  • 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.

  • 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 18 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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 7 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 9 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4528
  • 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:1248
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E9D886B6BD4981BEB6E1B8AFC15C3236 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3828
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240727562 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3BF7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729109 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:3500
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI456E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240731515 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1864
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3668
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B83B69743FD96AE57E9A790A8E2A394A
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3972
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B1B75CCEF750027B445ADE31E1F75CEA E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5280
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4612
    • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-cy3h6p-relay.screenconnect.com&p=443&s=24978039-15f9-4da3-b3ab-36c4b873dd22&k=BgIAAACkAABSU0ExAAgAAAEAAQCBOnJjt4T2fsl5StyG8GIcj9tY4N3ONg3oxxUk%2fXlWpbksXL8ymck52sjAg57KiD%2fzXl%2fRnJYz%2bCdE8cQUEopSuI6Rh%2bBW2nBSyPGTqR7e2JbbBPWI4AxMTQbA0%2bvvsNtc1MuQhRKzdMJ%2bCSCwKB6Bw7RplwxeN0FX8LJmoRt8D70DxsgQMTBEyll8aP08QJo1YL0%2b5sMoRiZHI5onHI2Yx5cGJNSSl09hPcwskKC7p1wLI%2bxhqmsWV7DfIrnlKotcvShHT4OP1Kq5tL0sE0vnvxtkvPnTA1fYkBu2C2Kf8MMHTvkMlUXnmzYWoPw1ksxXn4xId872U6DbYk3tsx6l&c=adobe&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:2256
      • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe" "RunRole" "24103323-1c32-4511-93e0-036517ee1c15" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1592
      • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe" "RunRole" "b0b2cd40-408b-4433-a840-0451bf398fc9" "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:2548

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59863e.rbs

          • Path C:\Config.Msi\e59863e.rbs
          • Size 214KB
          • SHA256 a88c86fb2a623e5f8cb8b23fb1829bfc394b6f218748941ea15bdf7c7a51b1db
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.Override.en-US.resources
          • Size 256B
          • SHA256 28b9226583d81800feaa9909bd0b0bf8a44bcbd97e66246c1d17162582fd46b3
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.Override.resources
          • Size 512B
          • SHA256 ef136b23db5fdea264728606ee311a10c602300e829992f17b8f943473a85f78
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\system.config
          • Size 962B
          • SHA256 cefceb0fc236d53b692fea3ab58feed07a8dc0857f0044cf263779b73d848c2f
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 9311d868ac69a7d9ce3fb60eccfce25ba7a6ed5e6f037ed90c4fe86fc65b7e1e
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 2275f4b45440eb1461a5a185438d405110ac9262b0c350386811aa2b2521443a
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 5a3928c2b5437c6ea3ff2074b23d6a264d86eeb69e00c68bf54d52f1461b8add
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 0855bfdb52fc6011ec4d672995bea9e9c9a20cfe96a44def51058d06bb36f309
          • 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

          MSI352F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI352F.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BF7.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BF7.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI88DE.tmp

          • Path C:\Windows\Installer\MSI88DE.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59863f.msi

          • Path C:\Windows\Installer\e59863f.msi
          • Size 14.0MB
          • SHA256 54809cd170349fab525aaea518434cb9980febd246f8db8442808cdb4b66223f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          52imvxas.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\52imvxas.newcfg
          • Size 882B
          • SHA256 bb90aa2f834e7269a568ba91445d379766471eb034e7bedb1130dc9557546c70
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\user.config
          • Size 520B
          • SHA256 9e2363ecbb2bdf58e10833cf504028cf06f5df681162472d625870fa467baa83
          • MD5 SHA1 SHA512 TLSH

          yvjq4kej.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\yvjq4kej.newcfg
          • Size 683B
          • SHA256 96ab5eeda3b0f4ee413081d0647a56fbcf1c68336789a86f19ceab48d9dafe8b
          • MD5 SHA1 SHA512 TLSH

          memory/400-41-0x00000000059D0000-0x0000000005B80000-memory.dmp

          memory/400-33-0x0000000003360000-0x000000000336C000-memory.dmp

          memory/400-42-0x0000000006130000-0x00000000066D4000-memory.dmp

          memory/400-37-0x0000000005780000-0x0000000005816000-memory.dmp

          memory/400-29-0x0000000003320000-0x000000000334E000-memory.dmp

          memory/1592-228-0x000000001CB90000-0x000000001CD16000-memory.dmp

          memory/1592-227-0x0000000000E70000-0x0000000000E8A000-memory.dmp

          memory/1592-224-0x000000001B7A0000-0x000000001B950000-memory.dmp

          memory/1592-223-0x000000001B550000-0x000000001B5E6000-memory.dmp

          memory/1592-221-0x00000000005E0000-0x0000000000690000-memory.dmp

          memory/1592-222-0x000000001B1E0000-0x000000001B24C000-memory.dmp

          memory/2256-163-0x0000000003D10000-0x0000000003DA6000-memory.dmp

          memory/2256-204-0x0000000004360000-0x0000000004436000-memory.dmp

          memory/2256-167-0x0000000003F60000-0x0000000004110000-memory.dmp

          memory/2256-157-0x0000000003C50000-0x0000000003C6A000-memory.dmp

          memory/2256-200-0x0000000004180000-0x0000000004212000-memory.dmp

          memory/2256-202-0x0000000003EA0000-0x0000000003EE1000-memory.dmp

          memory/2256-180-0x0000000003E50000-0x0000000003EA0000-memory.dmp

          memory/2256-199-0x0000000004110000-0x000000000417C000-memory.dmp

          memory/3500-74-0x0000000004FA0000-0x0000000004FC8000-memory.dmp