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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 07:25

General

  • Target

    c86e15085144ad16a9a62bb67c4d4042_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    c86e15085144ad16a9a62bb67c4d4042

  • SHA1

    15d3174e8b8f3dd171ef5fbc463fbcf6b588f60d

  • SHA256

    6a3f3dbadb3325deed042ff9f91ccc369e84d82a32c48bf2ecae3f2973adaa1c

  • SHA512

    89c34c1fb3671f03a1d9e7dc86cce920bece27243abaf15f12acabe95cdaa3e25dae16aa04dab8b581667668e8f426f3998fa75e1449e35e88c7f28a70a56e13

  • SSDEEP

    12288:yvbLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+D:SbLgddQhfdmMSirYbcMNgef0

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3303) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c86e15085144ad16a9a62bb67c4d4042_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4308
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c86e15085144ad16a9a62bb67c4d4042_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4440
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:4944
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:4972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    2dd2f810f4a7a89c3488d7be73169d12

    SHA1

    36635df9fe5148f6e11c2b4021c70b4dd204e2a7

    SHA256

    05cdee7b2e4c71f6adc2676a29ad3b8b164bb8a29f8e36c046e2502290649f84

    SHA512

    d1dccc472c0c0aedff58403d7e08c65f62414b53695282dc8b9f59c593ab6fbfbd3b77726e87c5258ca4700686fb27a270677f2e2b4384555dfc5bfb34e590ad

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    7f51e2c3f9cd8c9561e549d58508668f

    SHA1

    c7e69712737307515a3d56c5d25d43e968130d46

    SHA256

    8a5c69817d0b09acfc0ae921969b0607d6937ade6898f6364bced0341843cd52

    SHA512

    fcea49a0b7596e0bab3289b3b68c23b681f952ba8cc8432fe85393fbc5acffe4bb10d7425aa7e3dd510fb73903945e8e978023d2ee090e26206d91975cf6b39a