Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/07/2022, 07:42

General

  • Target

    2fa2b45f10328565d9cedcaaf3131771.dll

  • Size

    5.0MB

  • MD5

    2fa2b45f10328565d9cedcaaf3131771

  • SHA1

    524c453b2537d41fd3d113bfe905f351703ff592

  • SHA256

    81b7d9a20398387471e9830806ee44e9f52ee2c29d2c50707d2747a24fe02d40

  • SHA512

    480698612b1aba3deb3d1f7b40a400294b2ed3449a78e0e104a9f2b712a44a5cdcae2384aef25d25b716293fc4febc24fb703cb25f56e51b83eade0699ed2e34

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3225) 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
  • 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\2fa2b45f10328565d9cedcaaf3131771.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4144
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\2fa2b45f10328565d9cedcaaf3131771.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:5040
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:1396
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:4056
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Modifies data under HKEY_USERS
    PID:2616

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\WINDOWS\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          9f5fcc06c35b79fd9fc1cc3fd8d5eb7f

          SHA1

          380da41bb2ccde2e9b5e7f5ceb1d4103e9919628

          SHA256

          8ce7c85b5da5303647f5eb6d98ca54d6e6cb9f4c9462535b8034fe8c19b4ca52

          SHA512

          36034d0161da4709b6a255fa772d94c77670ef13d08edb682ef2ecde3b2581e645f0093e0ee072db037ac9c3c95b3f0665904ef03b4f0799cdc3bc4229358f1f

        • C:\Windows\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          9f5fcc06c35b79fd9fc1cc3fd8d5eb7f

          SHA1

          380da41bb2ccde2e9b5e7f5ceb1d4103e9919628

          SHA256

          8ce7c85b5da5303647f5eb6d98ca54d6e6cb9f4c9462535b8034fe8c19b4ca52

          SHA512

          36034d0161da4709b6a255fa772d94c77670ef13d08edb682ef2ecde3b2581e645f0093e0ee072db037ac9c3c95b3f0665904ef03b4f0799cdc3bc4229358f1f

        • C:\Windows\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          9f5fcc06c35b79fd9fc1cc3fd8d5eb7f

          SHA1

          380da41bb2ccde2e9b5e7f5ceb1d4103e9919628

          SHA256

          8ce7c85b5da5303647f5eb6d98ca54d6e6cb9f4c9462535b8034fe8c19b4ca52

          SHA512

          36034d0161da4709b6a255fa772d94c77670ef13d08edb682ef2ecde3b2581e645f0093e0ee072db037ac9c3c95b3f0665904ef03b4f0799cdc3bc4229358f1f

        • C:\Windows\tasksche.exe

          Filesize

          3.4MB

          MD5

          72b7326ad47efacd38036f594e2e0dc4

          SHA1

          919cfc5ca4e334cc3dd9a5480cac09454593ef5a

          SHA256

          c12b903c402922ea0978c82218a9e6e73035af524096428391d6b53fcfad878a

          SHA512

          b958fd7e154bab31f8f23c9fa867bbbaaff0179acde5aa8c7a3b0928bb7c1b48eaef05866a26fb53fbfd38453e1cde896d92920d022d003fc89dbc72734c2f59