Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 05:09

General

  • Target

    832743346882cd979378a6cd88ed1db4_JaffaCakes118.exe

  • Size

    240KB

  • MD5

    832743346882cd979378a6cd88ed1db4

  • SHA1

    aa06513b48370497d5dad830863a3c79de68d9ff

  • SHA256

    0a2084f5ace58ae403b29d0a69b9f2baad81582ac528dc0faf3fd4883f3e4b86

  • SHA512

    7325e805f73b02f30d34e4b4d7ea24d6da791f3e4f157f405290e88b35073db24683dbfe32508a5fe5d7741f475234d07f9c12bee66daccd1eacb8a0c3dbc26d

  • SSDEEP

    3072:P4OzL5gnIGOdmLGeCfcpwA5f3CEoEtUMbfRt:wOzWOK7cKiED5

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 51 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 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\832743346882cd979378a6cd88ed1db4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\832743346882cd979378a6cd88ed1db4_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Users\Admin\wkyuf.exe
      "C:\Users\Admin\wkyuf.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
      • Suspicious use of WriteProcessMemory
      PID:1936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\wkyuf.exe

    Filesize

    240KB

    MD5

    763c0ccde131b2b3bc3cb1ec2dadac4b

    SHA1

    5660c53bdb727482d90b8cd245b517e05cf04e1d

    SHA256

    9925c909295d7c6cacfdbadf594c7a92f229798386262a83aea06ee65924bd20

    SHA512

    d8a83f46398ff71ad4a8697808dd7264ba686ec812b3ccd22d13aab16b7b7fc1fe39f022c0184750b40b2ca3e579f993916f977de2a122f011eeb1a5516aa3ae

  • memory/452-0-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/452-37-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1936-34-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1936-38-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB