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
    06/10/2026, 16:07

General

  • Target
    jaffacakes118_Trojan-Dropper.Win32.Agent.oijx.exe
  • Size 546KB
  • Sample261006-tkl7daz19k
  • SHA256 ddd8e6084c48d2727bdbc6237b50dad5307a1092f456b461bd7d98a8d4870688
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 11 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 6 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 15 IoCs
  • Drops file in Program Files directory 47 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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.

  • NSIS installer 4 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Agent.oijx.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Agent.oijx.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5404
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\FastestTube\2.2.0.3\WombatBHOx64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3624
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\FastestTube\2.2.0.3\WombatBHOx64.dll"
        3⤵
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies registry class
        PID:5784
    • C:\Program Files (x86)\FastestTube\2.2.0.3\updater_setup.exe
      updater_setup.exe /S
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\ProgramData\WombatUpdater\WombatUpdater.exe
        C:\ProgramData\WombatUpdater\WombatUpdater.exe -install
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:5372
  • C:\ProgramData\WombatUpdater\WombatUpdater.exe
    "C:\ProgramData\WombatUpdater\WombatUpdater.exe"
    1⤵
    • Executes dropped EXE
    • 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
    PID:4232

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        WombatBHO.dll

        • Path C:\Program Files (x86)\FastestTube\2.2.0.3\WombatBHO.dll
        • Size 181KB
        • SHA256 436bc384a77569d15d8b4e0a83ad08c8d403ad3293d228d8bae2e86a32c7ce8e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WombatBHOx64.dll

        • Path C:\Program Files (x86)\FastestTube\2.2.0.3\WombatBHOx64.dll
        • Size 215KB
        • SHA256 480c913d4504b718c5437834ef4529e936065ae7b2799ac8fa76027e17967482
        • MD5 SHA1 SHA512 SSDEEP TLSH

        updater_setup.exe

        • Path C:\Program Files (x86)\FastestTube\2.2.0.3\updater_setup.exe
        • Size 76KB
        • SHA256 75266aacccab9c722bc982c64dd5217fceacfcb0d75c75aaff5295d713a5bba3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Uninstall.exe

        • Path C:\ProgramData\WombatUpdater\Uninstall.exe
        • Size 35KB
        • SHA256 cd315617ac170104b7f75e8f194086e30124dda7444ed586237d99aef5bdfeb2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WombatUpdater.exe

        • Path C:\ProgramData\WombatUpdater\WombatUpdater.exe
        • Size 78KB
        • SHA256 87b33383aa0ffc3a9b3db0c8cd312e62e166a441110b05ed825da402626b5236
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nst64CC.tmp\System.dll
        • Size 11KB
        • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        UAC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nst64CC.tmp\UAC.dll
        • Size 13KB
        • SHA256 a6d956f28c32e8aa2ab2df13ef52637e23113fab41225031e7a3d47390a6cf13
        • MD5 SHA1 SHA512 SSDEEP TLSH

        modern-wizard.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\nst64CC.tmp\modern-wizard.bmp
        • Size 25KB
        • SHA256 3ad2dc318056d0a2024af1804ea741146cfc18cc404649a44610cbf8b2056cf2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nst64CC.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 e31ad6c6e82e603378cb6b80e67d0e0dcd9cf384e1199ac5a65cb4935680021a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsProcess.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nst64CC.tmp\nsProcess.dll
        • Size 4KB
        • SHA256 95fe9d92512ff2318cc2520311ef9145b2cee01209ab0e1b6e45c7ce1d4d0e89
        • MD5 SHA1 SHA512 TLSH

        update[1].xml

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE\update[1].xml
        • Size 163B
        • SHA256 72431143fa033dc2fc5170af2cdc4ec723cf36a3a7b8a5c4c9d9ef200fceff3c
        • MD5 SHA1 SHA512 TLSH

        Updater.job

        • Path C:\Windows\Tasks\Updater.job
        • Size 314B
        • SHA256 3df60a685a3b06a81f97d30020128a1b8501bf5ab78b52e1aba57096e8adef2a
        • MD5 SHA1 SHA512 TLSH