Analysis

  • max time kernel
    98s
  • max time network
    101s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 17:02

General

  • Target

    documents-010.21.doc

  • Size

    34KB

  • MD5

    45b351e528729b2497285224a2cba401

  • SHA1

    49cca34a6d2338c575cd82e9eff6984f388e50a9

  • SHA256

    0e412a3579154b025a22360faf38aac50ddb3b02d1b71e0293588f341306593a

  • SHA512

    3a1e4032e37850250213a61911f4229eb33defc5f508bbfa71fd9cc794bfa47c86bc121acd8acddf241d8d6dfc07819ee73f7bfa151d6e5f1886c1cba2f19be8

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

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

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • 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\documents-010.21.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:268
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\youRedIn.hta"
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Suspicious use of WriteProcessMemory
      PID:1420
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" c:\users\public\inMyLady.jpg
        3⤵
          PID:1716
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:2028

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\users\public\youRedIn.hta
        MD5

        0a09a757949b5b5554a841daa5b88a99

        SHA1

        0dfddb99a5f716ee2f7cf213e11f9a543fa1210b

        SHA256

        e317a76deca332dd12cd1888a86c794485862b07e0f06d15e5f91cc6d439eb82

        SHA512

        ff23dfcbcc7e26e189f58026c9c6f56686a84e4dc54e11031b7a93769864c1725eb86e85981822a2200db719068e6683138a8e2f837349eaf4dab77674165fa3

      • \??\c:\users\public\inMyLady.jpg
        MD5

        504f2870481c875c03373249cdf38e49

        SHA1

        7f34068ef0f8b8208003aec1e2f6742125c47acf

        SHA256

        57ce0aa9c7767160043b7b4e0778043697ee1ee90c05409325a82007a7ef7c5f

        SHA512

        2c5e35de54a4f8658b01d144d5d1ba935cb851badcc96993492be298452ea7d0036bdfbc1d6e1091fecd074a400e31b53e1f7f4211bddf6d515bfbe6952535aa

      • memory/268-54-0x0000000072551000-0x0000000072554000-memory.dmp
        Filesize

        12KB

      • memory/268-55-0x000000006FFD1000-0x000000006FFD3000-memory.dmp
        Filesize

        8KB

      • memory/268-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/268-57-0x0000000076201000-0x0000000076203000-memory.dmp
        Filesize

        8KB

      • memory/268-67-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/1420-58-0x0000000000000000-mapping.dmp
      • memory/1716-63-0x0000000000000000-mapping.dmp
      • memory/1716-66-0x00000000001B0000-0x00000000001B1000-memory.dmp
        Filesize

        4KB

      • memory/2028-61-0x0000000000000000-mapping.dmp
      • memory/2028-62-0x000007FEFBB51000-0x000007FEFBB53000-memory.dmp
        Filesize

        8KB