Analysis

  • max time kernel
    147s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    11-08-2024 10:01

General

  • Target

    89f1efe44aa74399d7b93354151f308e_JaffaCakes118.exe

  • Size

    266KB

  • MD5

    89f1efe44aa74399d7b93354151f308e

  • SHA1

    ba5aa7db202444db19e2021a2180faf17502c42a

  • SHA256

    307ea1f3d838d032c5d5ba4fdbd8abe94fda8b95ee6a07576aedc1d31fa33f72

  • SHA512

    c2758957758bdd0393a84b30c0b6f939eca6568003f4e3d4a59f080e44a759ddc9671cb969020324841423246aca5ac92715d1ccc9662b65c896cf33203ee1bf

  • SSDEEP

    6144:V8g1k937vbCVl3py+5XB+9rgzUggHaxAOx:V8R9rvbCVW+5x+1gz6

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Disables taskbar notifications via registry modification
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • 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.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 29 IoCs
  • Suspicious use of SendNotifyMessage 17 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\89f1efe44aa74399d7b93354151f308e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\89f1efe44aa74399d7b93354151f308e_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\muk.exe
      "C:\Users\Admin\AppData\Local\muk.exe" -gav C:\Users\Admin\AppData\Local\Temp\89f1efe44aa74399d7b93354151f308e_JaffaCakes118.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2272
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\muk.exe

    Filesize

    266KB

    MD5

    dbf36e6def08b9a93143a07ce5f0d6b2

    SHA1

    e0465314bf510f0b99555e675790c3eee29f12c9

    SHA256

    6f0a07d47fe8dec45d364b000dd3020ea114879d5db5fdd3836d59ee8a042342

    SHA512

    fdec2d634417f22b1d3e9e52da54493658041dab2ebe64d5de0c3a64cd49637e5a31215e1fff583718e81f8fa32297510f0888c37d316bb8cb4813fdd006ec54

  • memory/2272-14-0x0000000000400000-0x0000000000461F10-memory.dmp

    Filesize

    391KB

  • memory/2272-15-0x0000000000400000-0x0000000000461F10-memory.dmp

    Filesize

    391KB

  • memory/2272-16-0x0000000000400000-0x0000000000461F10-memory.dmp

    Filesize

    391KB

  • memory/2704-31-0x0000000002A70000-0x0000000002A80000-memory.dmp

    Filesize

    64KB

  • memory/2932-0-0x0000000000400000-0x0000000000461F10-memory.dmp

    Filesize

    391KB

  • memory/2932-2-0x0000000001F90000-0x000000000239E000-memory.dmp

    Filesize

    4.1MB

  • memory/2932-4-0x0000000000401000-0x000000000045A000-memory.dmp

    Filesize

    356KB

  • memory/2932-3-0x0000000001DD0000-0x0000000001EED000-memory.dmp

    Filesize

    1.1MB

  • memory/2932-13-0x0000000000401000-0x000000000045A000-memory.dmp

    Filesize

    356KB

  • memory/2932-12-0x0000000000400000-0x0000000000461F10-memory.dmp

    Filesize

    391KB