Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 20:37

General

  • Target

    About China's plan for Hong Kong security law/wwlib.dll

  • Size

    48KB

  • MD5

    2ec79d0605a4756f4732aba16ef41b22

  • SHA1

    304e1eb8ab50b5e28cbbdb280d653efae4052e1f

  • SHA256

    f6e5a3a32fb3aaf3f2c56ee482998b09a6ced0a60c38088e7153f3ca247ab1cc

  • SHA512

    bac84647f9798fe353837daed6d95975a4fb53b440ad6eba6e20283dc1cc0f6a1d52ad1961af417f584e6bf42316073e0512d8e832fc65ebf7651863d43e7fc7

  • SSDEEP

    384:w748fJCoV0vl2BkeM7eksD5D2UfNDCXYyxbTM6Cu/BfI/PKgJgGwYgqP0XArAINX:w74SolWtzFtyxfhVAPhWNYRcAV5

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\About China's plan for Hong Kong security law\wwlib.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\About China's plan for Hong Kong security law\wwlib.dll",#1
      2⤵
      • Blocklisted process makes network request
      • Modifies system certificate store
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
        "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\About China's plan for Hong Kong security law\About China's plan for Hong Kong security law.docx"
        3⤵
        • Drops file in Windows directory
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1960
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          4⤵
            PID:1964

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\About China's plan for Hong Kong security law\About China's plan for Hong Kong security law.docx

      Filesize

      14KB

      MD5

      271a96d10dbd8bd7adf45145c627e93f

      SHA1

      cd40a0884c437607a3d1383356975db2c3a80254

      SHA256

      d8829383daa887e05292da9a2b1fabbe5ff89b71f5205e32614bd54b92c3f238

      SHA512

      ce920a98f36c8d8c8551d98723ed303efda198fb023ab449aa2b53f5098000353f2b0b43c5e2254c433050b4ec8eec27a07ca583db195a609af95354634c3bd9

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      3512b5bf6676028b9445169c99847f7e

      SHA1

      be35aabaefa017db82e257deb5db082515410c03

      SHA256

      e0f59767199f6765bd0f3e52e63be3280ad1b8ac289ec5548d50616873258ccf

      SHA512

      9895c20420d4af5861aa660549c43f893580026ab7e1eabe7e7014f64dfa8623782731fe3b3b35c43461e2c3ddf6f56d0d25af2bdf5f55e149d2412b9692fded

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/1960-2-0x000000002FB31000-0x000000002FB32000-memory.dmp

      Filesize

      4KB

    • memory/1960-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1960-4-0x000000007170D000-0x0000000071718000-memory.dmp

      Filesize

      44KB

    • memory/1960-43-0x000000007170D000-0x0000000071718000-memory.dmp

      Filesize

      44KB

    • memory/1960-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB