Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/10/2026, 17:56

General

  • Target
    jaffacakes118_Trojan.Win32.Hooker.fa.exe
  • Size 829KB
  • Sample261018-wh5xtaca59
  • SHA256 fa91b2a024b3ba8f276745d8a1d944a55f2383f4a20e65117120c071315ce631
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Executes a command shell one-liner 1 TTPs 3 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 4 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Hooker.fa.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Hooker.fa.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3900
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Windows\run.bat
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1260
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c dir "C:\Users\Admin\Local Settings\Application Data\Mozilla\Firefox\Profiles\*.default" /B
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        PID:4676
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c dir "C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\*.default" /B
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        PID:6060

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        OyEX.dll

        • Path C:\Windows\OyEX.dll
        • Size 337KB
        • SHA256 c5c710afe0344cf17b3689eb999c0758375ab8c05c66b92955958949db87da1a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        clk.ini

        • Path C:\Windows\SysWOW64\clk.ini
        • Size 26B
        • SHA256 c4231a8f59c8acf36d244c86c2378dfc9dad719441ebe43a88c18ea0408eeb63
        • MD5 SHA1 SHA512

        run.bat

        • Path C:\Windows\run.bat
        • Size 5KB
        • SHA256 62c2f28a0d7d2fc48b0b9465606aeba7f67d6532b427822f0e1b25a5651fbc14
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3900-23-0x0000000000010000-0x0000000000011000-memory.dmp

        memory/3900-15-0x0000000000030000-0x0000000000031000-memory.dmp

        memory/3900-16-0x0000000000040000-0x0000000000041000-memory.dmp

        memory/3900-14-0x0000000000020000-0x0000000000021000-memory.dmp

        memory/3900-25-0x0000000000020000-0x0000000000021000-memory.dmp

        memory/3900-24-0x0000000000060000-0x0000000000061000-memory.dmp

        memory/3900-22-0x0000000000050000-0x0000000000051000-memory.dmp

        memory/3900-27-0x0000000000030000-0x0000000000031000-memory.dmp

        memory/3900-26-0x0000000000070000-0x0000000000071000-memory.dmp

        memory/3900-28-0x0000000000080000-0x0000000000081000-memory.dmp

        memory/3900-29-0x0000000000040000-0x0000000000041000-memory.dmp

        memory/3900-13-0x0000000000010000-0x0000000000011000-memory.dmp