Analysis

  • max time kernel
    121s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 15:29

General

  • Target

    input.010.21.2021.doc

  • Size

    34KB

  • MD5

    b9470a968a6edf4b2ce6c52d69610235

  • SHA1

    5219339d196bd7c698f51973c06c1a32370d9f65

  • SHA256

    bdd3eeea2e9c2930f75115dc2bccfef990d6aae5d8b0253c1e0effa0b1911b5b

  • SHA512

    bdbec4af4913e9b87603f3d1c946667782803f32a8d194de4aa9ce7eae0da7c1b16b8bfbc9d467bba1aa5e9a48ff650aaf26c886a2d1c1cb9d7fc5dc732e85ea

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\input.010.21.2021.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:368
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\kingSeaCaroline.hta"
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Suspicious use of WriteProcessMemory
      PID:1984
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" c:\users\public\carolineLadySea.jpg
        3⤵
          PID:1756
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1560

      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\kingSeaCaroline.hta
        MD5

        fc60bfbcfb72c73cf4380e3d69f8ff30

        SHA1

        ec4c91db6a6459c765e90db04294094f264d28c3

        SHA256

        f4c0fdcc5b0a4f27af58e52571b63b121d09ae37f5d9772d68c2912f6c2ae58b

        SHA512

        f21c3e33042434d1bd0a4ff74210a280f5f30b8c36f0b5623f1659e8f0ef7a5c79a643864b1e6032fb69485a8c7dd10d983640784d678b8d04688d4a315f675a

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

        4007b2db898dbd042f6f62a3e60539ae

        SHA1

        5f926b178fc208723ee165a120f7570a1f1c0dbe

        SHA256

        5a8fb71dcd8a5b56672ffae188baab6370648a2b9ca0dc763add672db2cac0d0

        SHA512

        4ff8b9db8d2271d971369ab15256a7746533f7545d61b85a09edb86297d61206ade0bac69cc726ea8cc819ada9f37d5148cc1c0199ef4e1520815bbaf47e30f6

      • memory/368-57-0x00000000757B1000-0x00000000757B3000-memory.dmp
        Filesize

        8KB

      • memory/368-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/368-58-0x00000000006A4000-0x00000000006A8000-memory.dmp
        Filesize

        16KB

      • memory/368-59-0x00000000006A4000-0x00000000006A8000-memory.dmp
        Filesize

        16KB

      • memory/368-60-0x00000000006A4000-0x00000000006A8000-memory.dmp
        Filesize

        16KB

      • memory/368-62-0x00000000006A4000-0x00000000006A8000-memory.dmp
        Filesize

        16KB

      • memory/368-72-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/368-55-0x000000006FEC1000-0x000000006FEC3000-memory.dmp
        Filesize

        8KB

      • memory/368-54-0x0000000072441000-0x0000000072444000-memory.dmp
        Filesize

        12KB

      • memory/1560-66-0x0000000000000000-mapping.dmp
      • memory/1560-67-0x000007FEFB951000-0x000007FEFB953000-memory.dmp
        Filesize

        8KB

      • memory/1756-68-0x0000000000000000-mapping.dmp
      • memory/1756-71-0x0000000000270000-0x0000000000271000-memory.dmp
        Filesize

        4KB

      • memory/1984-64-0x0000000000000000-mapping.dmp