Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20-05-2024 10:29

General

  • Target

    5e997736a950b255b74def5a7090a310_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    5e997736a950b255b74def5a7090a310

  • SHA1

    01d77af04ac36e556b8638314687ba24a09063d1

  • SHA256

    1cb50e49a995d7b5fbc68ce0ad7c9c3f2a01d31e554ecd64d8a51f7511218fb5

  • SHA512

    ed22894452f2277fb9f2a38049bfbfbbb9093a21dd4303a52e087a8b8ef65832ee211c080e93d82c3319578547ec35e59159a34128e5f981a3ca26eb968fe539

  • SSDEEP

    98304:d8qpz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:d8qB1Cxcxk3ZAEUadzR8yc4H

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3267) 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 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e997736a950b255b74def5a7090a310_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e997736a950b255b74def5a7090a310_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:2076
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:3040
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2488
  • 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:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    a8ec421a7a0102eba7f116fb05a693b7

    SHA1

    9c8dd4295920870267037552b630be8a58c33d78

    SHA256

    277b166ce953a8126678354e7588e9437b3ac8863737334822c99b5719019f84

    SHA512

    bd5f30c1eb2d7184ea71428448218848460e66f44d7a0a19b3c2f1c258b3772b6ff9a2886afcc4dbf29cd7382ec2da1913576a72c73f92b47dd39d5f08709e74

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    e5792ea0c32a7f959dff01c4a4a81d4e

    SHA1

    4e87d246e6b9c0c273af2dcbbc8187e6fbe17969

    SHA256

    4b5b2fd5c9c0720571b6d4a771b49f6ecadc2af1936b2addfd4bafd266dc989f

    SHA512

    b8689cbc8c8006f26e23a37c9fda950829a3794f7b5e7c9fdcb09cead87d4c460d8b5144da31ab92ed207db008968edaa6e2b8aee2621399ba7db4c9d3023cf5