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Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/08/2024, 13:21

General

  • Target

    b39e033622a4064150079af0f0a2f6e7_JaffaCakes118.exe

  • Size

    200KB

  • MD5

    b39e033622a4064150079af0f0a2f6e7

  • SHA1

    d78e5abb26570595992e9e947a600ad4f57c8fa1

  • SHA256

    419846e9b68e55915ca25b8a6b95a20b39aaf67b4788c357a96f534903a1b7e3

  • SHA512

    0a19fca436159e59e25aa36811f57294ee1a4ca090ac7ab63619798c9d556e1f398cd83b2c43979be4e6044d69213c94808da3a9d049cffc0ee5c90223b64d8f

  • SSDEEP

    3072:kCtTo/0Yxq0tQ9nLHbB9WPliBs2HWWEakGJm9uq+:kCwo4QxL7B9WPli+yWWEazNj

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 27 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\b39e033622a4064150079af0f0a2f6e7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b39e033622a4064150079af0f0a2f6e7_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:3724
    • C:\Users\Admin\byzeol.exe
      "C:\Users\Admin\byzeol.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:364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\byzeol.exe

    Filesize

    200KB

    MD5

    dc73e174cfbad5f4f5e79809ecb0d003

    SHA1

    6372b2051c6082ff3f7655bcd7855d21f0a32776

    SHA256

    4111ebc7cd81c58298f8955a0a2731d3113f9dbc078494e077cd916932748d89

    SHA512

    0085aa488a9e6cdc1b83486d41aa71449219fa121030cb03c57f31a590e62acb7844767313a112261cd5d864f8f62da01e854c31076496610817a975f4b8d5da