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Resubmissions

24/08/2024, 08:45

240824-kn5y8asbkh 10

24/08/2024, 08:23

240824-kajh3atanl 10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    24/08/2024, 08:23

General

  • Target

    be376452707de19a4abf88da57dbd3a2_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    be376452707de19a4abf88da57dbd3a2

  • SHA1

    4faf9ea5ffea32f7b09f666bc2bec21f4062cbd5

  • SHA256

    464d83ae52e2c6428504335d44bf79f866757a1d47281a1f1d4a51acc32e25d4

  • SHA512

    a4203e37fbdda7da6e4893b7d6b2fd66526bdd70be28ba69b1df291cbd05129c5059707f78d968acf418f6281ae578cf6a58d2fc2d4142c71ff35d66133507c1

  • SSDEEP

    49152:SnAQqMSPbcBV3GGafYzflm+fZTFZIGayscOqdImwW6LC:+DqPoBQ+iUP2dWOC

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3195) 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 System32 directory 1 IoCs
  • 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 24 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\be376452707de19a4abf88da57dbd3a2_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\be376452707de19a4abf88da57dbd3a2_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1280
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2832
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:2156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    80824697873235ab2e3020d850ac67a4

    SHA1

    1a65d9a772031fb20c0ce446712771fca2ffe3ea

    SHA256

    26a3c75e42db705cbd28d71270febec8b106534bea2c2ee9bf290f4e8fe6a537

    SHA512

    e12960dfbc6fa7fa03aee3a13140b0900735138f2ce11ce368a915bb241805c5af7b12cad6b8ff3d0b09aac79b1da2a0580a1018df77fa0deeae913172a834c1

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    719bb92d7efdbb351531331f1864e945

    SHA1

    851c16a405445e0b3a0596e8e98f55e0b4dd7214

    SHA256

    7792387162752d9260ee5bbb228c11328269853ba473b6682931f1b7c6a9c176

    SHA512

    46a6e02f763ad37c7580fedb4b9d8c21522d88bd90a227cf50f51ae6ae29af55d2ba5852d1282cabc7d0e76d93ca478319db4ffd1950d38c09dc447102173ec2