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Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/08/2024, 16:15

General

  • Target

    8b0d9bcef6bc8c79a58a001097a4a404_JaffaCakes118.exe

  • Size

    124KB

  • MD5

    8b0d9bcef6bc8c79a58a001097a4a404

  • SHA1

    a7dd8637e3c70916ce41b062956c616c608840ed

  • SHA256

    95ef16a3bd84269df8cd46b7997c692071bf30221d1839da3306a043291ffa03

  • SHA512

    fe36f2eb7eb5547d6974881fd050568a87e6e7ca5d9b3fb48501e9107c5b99a773d4e2bf483e5ddb97b23d9019335e74baf205c29b7575977cfdd82b9aefec85

  • SSDEEP

    1536:f1EPehwR8uBxeDtMYHa27J14ltxporZ45iMNeG0h/y:tEPehwR8keV6gJ1uCt45eq

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 52 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b0d9bcef6bc8c79a58a001097a4a404_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8b0d9bcef6bc8c79a58a001097a4a404_JaffaCakes118.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4512
    • C:\Users\Admin\yeofee.exe
      "C:\Users\Admin\yeofee.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1732

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\yeofee.exe

    Filesize

    124KB

    MD5

    a15b507d08863cf612eb34a8d891f895

    SHA1

    669fd062679a9d8bd333b9365f9d897eb92d5126

    SHA256

    3968e576eb07751c011fc09092236c7157aca58214d1801d657fc10bad69066f

    SHA512

    3df17410b0d7fcc9d92e84787ab1d362145c75fbc9def6a8c17619259a10b3f3df798adcfb2acd2aa55dbddcd636db353bf8b5ba17a62e30538d13f627d21811