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
    14-09-2024 01:03

General

  • Target

    df36dea50835289e2bfaa623724a5c23_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    df36dea50835289e2bfaa623724a5c23

  • SHA1

    d78fab0eeeca60fe2a4269ddc1e81b4b35472d01

  • SHA256

    f1e276efe42dcb89b2c061bb14c68c9db8d15bc1647f849475e1796992eacbf5

  • SHA512

    7281cd01b9a3efa41fd107abb55dbd3b0bdff92b7d42e51addd14998752a958dac3621f050a173adb5e753f53992861a3170577faddaf4fba8675bbb2a3d7ade

  • SSDEEP

    98304:TDqPoBhz1aRxcSUDk36SAEdhvnUxuxZwLFGjaOgdN:TDqPe1Cxcxk3ZAETKOS02Oy

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3276) 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\df36dea50835289e2bfaa623724a5c23_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\df36dea50835289e2bfaa623724a5c23_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4840
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2576
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:1096
  • 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:3708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    d97fa7effec66c70c1a804e56ee2d6f9

    SHA1

    66b2e23045a3528ef5a97112da44233462bbbf2b

    SHA256

    e69f1c60f66b43b8536f267af27456b9022ebfda4e5a694b42d0d07fe9c67ee1

    SHA512

    76965a2a0ba4974988efdc1344d6639ec71be178f59f79b9bf9fbcf5cee2810d0016207e11c4679c4c3ee18e14afc75397c2ec4033ea72973bbe014a90b79f16

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    a545c54887b60c7ae0468d102ff79221

    SHA1

    1db8fac4a5931060c88c077f575fbbe0e421c90a

    SHA256

    3e190b7c5993fa42c58ca7233b5f46be6fd1621a2ab1256c93ec0398bf322424

    SHA512

    877e2787fb798786c94d2fe7ef7860c88c4e1980f00a91d788e5c70643181a7a8deeecb529f81419971ae02957b2ad1699a808c5214d3acf75d47acc356fc3df