Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    20-07-2022 01:40

General

  • Target

    2259ebf3658c2dd6ab1e53e3c23fad4d.dll

  • Size

    5.0MB

  • MD5

    2259ebf3658c2dd6ab1e53e3c23fad4d

  • SHA1

    0e1170d4132d995d404b86772cf41b399aa967d4

  • SHA256

    66f1d8d65c041689a1c05c661794e44bab00a546fac687089bab07a556c859ce

  • SHA512

    6b2f2ef1eb186923d64f86fb3fe9a08baac2089ec1d405a931c33c1c097692685ab4514aeeb9896ced9497709269120519695c8c26d04575bf26eba3d855aae8

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (1123) amount of remote hosts 1 TTPs

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

  • Executes dropped EXE 2 IoCs
  • 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\2259ebf3658c2dd6ab1e53e3c23fad4d.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\2259ebf3658c2dd6ab1e53e3c23fad4d.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1196
      • C:\WINDOWS\mssecsvr.exe
        C:\WINDOWS\mssecsvr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:1612
  • C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    PID:1052

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\WINDOWS\mssecsvr.exe

    Filesize

    3.6MB

    MD5

    50dc06528bc615007083fc5084369964

    SHA1

    c3fe4bc71b70991ab20f50edafd99f0f12448f58

    SHA256

    c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2

    SHA512

    d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab

  • C:\Windows\mssecsvr.exe

    Filesize

    3.6MB

    MD5

    50dc06528bc615007083fc5084369964

    SHA1

    c3fe4bc71b70991ab20f50edafd99f0f12448f58

    SHA256

    c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2

    SHA512

    d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab

  • C:\Windows\mssecsvr.exe

    Filesize

    3.6MB

    MD5

    50dc06528bc615007083fc5084369964

    SHA1

    c3fe4bc71b70991ab20f50edafd99f0f12448f58

    SHA256

    c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2

    SHA512

    d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab

  • memory/1196-54-0x0000000000000000-mapping.dmp

  • memory/1196-55-0x00000000754F1000-0x00000000754F3000-memory.dmp

    Filesize

    8KB

  • memory/1612-56-0x0000000000000000-mapping.dmp