Analysis

  • max time kernel
    146s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    05/10/2021, 15:49

General

  • Target
    figures_010.21.doc
  • Size 76KB
  • Sample211005-s9chssaaf2
  • SHA256 71a5ee88580fb5ab41db8fe42ba2197cfaeed46ff40b4d8942ced0d5eda9d2b3
  • MD5 SHA1 SHA512
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 2 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\figures_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:1124
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Local\Temp\wordRap.....hta"
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Suspicious use of WriteProcessMemory
      PID:780
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" c:\users\public\microsoftExcelEarth.jpg
        3⤵
          PID:1484
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1060

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/1060-64-0x000007FEFC051000-0x000007FEFC053000-memory.dmp

            memory/1124-53-0x00000000729A1000-0x00000000729A4000-memory.dmp

            memory/1124-54-0x0000000070421000-0x0000000070423000-memory.dmp

            memory/1124-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

            memory/1124-56-0x0000000075661000-0x0000000075663000-memory.dmp

            memory/1124-65-0x000000005FFF0000-0x0000000060000000-memory.dmp

            memory/1484-62-0x0000000000150000-0x0000000000151000-memory.dmp