Analysis

  • max time kernel
    149s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-09-2024 04:25

General

  • Target

    ef1036404e979d5716bb98e83068066a_JaffaCakes118.exe

  • Size

    252KB

  • MD5

    ef1036404e979d5716bb98e83068066a

  • SHA1

    3c9b31eddd893cda34b16a6a6fdefe90a62928ce

  • SHA256

    0db749064f487ac547856a40279026e99e6fc65a81fb3c883f5998490817558e

  • SHA512

    10b90dc5ed74686b69f5c3a8664772843f3e00b77c461e7d5c855e17fbcd7704a476ceff56ba1abf96c42520602bdec87282d248b63af8e2331b59cfde84de65

  • SSDEEP

    6144:x+AEyrimEU/EztV++Jbtd4lfn8hFXbTom85FMnH:xNVrimr/EztV++JZd4lfnSTo7F

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 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\ef1036404e979d5716bb98e83068066a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ef1036404e979d5716bb98e83068066a_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Users\Admin\keoyeu.exe
      "C:\Users\Admin\keoyeu.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:4324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\keoyeu.exe

    Filesize

    252KB

    MD5

    d2e25c17bfb1f61b995c5d4ef3a4a021

    SHA1

    2c38246a1a5466bfb2166988ee2f291fc84929b1

    SHA256

    fc34727e9d820b56a80555e7de2a9f762663c3928edf45b38a6a7f2700d6d75c

    SHA512

    42516482290fa39bcc586868dac9b177339f0b6804281f811721b9e5bd938dbc2dad020dd24b6d372d5e4d6045355b03d442603ed58ae29b8145f5f365a753b1