Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    18-05-2024 16:03

General

  • Target

    5597a3124d8b5532be08bf3dfe8ff4fb_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    5597a3124d8b5532be08bf3dfe8ff4fb

  • SHA1

    6bceaba53120614c6aff23f935966f038bf2b244

  • SHA256

    753499a1d63d0875bf074feb0c9d81a6936fa7d1e5e0cc9acdf47cc1caeaa0a5

  • SHA512

    061f1e0ae7f79cf6319c66fb8ef92b637dae0d1581d502b49807f44373e7650374b4241b35949eaf0ca159874ac25f214300e005556725b94e0a0506de2d05c5

  • SSDEEP

    49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:+DqPoBhz1aRxcSUDk36SA

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3302) 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
  • 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\5597a3124d8b5532be08bf3dfe8ff4fb_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\5597a3124d8b5532be08bf3dfe8ff4fb_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:2132
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:2800
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2808
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    PID:2624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    dc3edd25bc4faa07cee27a0fb4e521e1

    SHA1

    17cf1414972fc5d9c232277a663d2dd6e0cad2ed

    SHA256

    ea02e5f0feb89b67c570b907f8039f2e99939f17538c60828a643f696c5b940e

    SHA512

    108811bc55e7380a58efdd069619d7215245c6f001f70b589aedcffc7fb079bf7eeb9ff3869351a4c86da48784d38c1aca47737120d9419b3d0d17f9f629ba8f

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    e4588814eacbb29b64b47eeb01db1bab

    SHA1

    7bf22134720bd2592e881270f75e93df2d9333fb

    SHA256

    c739b3324500ba1030da69fccf59cf43da26729045293cac56718c85e2ee0317

    SHA512

    f978c43a23589cee2e065818e1e6a701bcbc7856c68e2323c5a6e5c399c3f6d78a99be7dbb9283a98d919f35e02c6d2fedb40f2db442b13911c94ffd0bb48698