Analysis

  • max time kernel
    101s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2022 12:52

General

  • Target

    cb5ed7db9aaa4e5e64b4071718b4f9f5d362a678dff212e34f9f7ee155d4dbeb.xls

  • Size

    88KB

  • MD5

    6e1afa6090e9716363e7bda7ac194daf

  • SHA1

    efcfab229662d1f3d1e69d4cdff25ed73b256165

  • SHA256

    cb5ed7db9aaa4e5e64b4071718b4f9f5d362a678dff212e34f9f7ee155d4dbeb

  • SHA512

    9b215b146bcee347b0302348ce033a65013a5047844994e5271eba0f28363950119073d727a0e61870ceba40b7b54b4685d603892b0b7d4b764cbc966d175a1b

  • SSDEEP

    1536:FtttgRi1nrCZpCxmx2jcc0lbxOvTgZFDhY7nJdJoOdLJwXwGT/:tCP2jcc0lbxOrQ2rJwXwY/

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\cb5ed7db9aaa4e5e64b4071718b4f9f5d362a678dff212e34f9f7ee155d4dbeb.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1692
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:452
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1296
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:1868
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:1920

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1692-60-0x000007FEFB7F1000-0x000007FEFB7F3000-memory.dmp

      Filesize

      8KB

    • memory/1708-64-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-382-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-57-0x0000000071E2D000-0x0000000071E38000-memory.dmp

      Filesize

      44KB

    • memory/1708-61-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-62-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-63-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-66-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-65-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-54-0x000000002FDC1000-0x000000002FDC4000-memory.dmp

      Filesize

      12KB

    • memory/1708-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1708-387-0x0000000071E2D000-0x0000000071E38000-memory.dmp

      Filesize

      44KB

    • memory/1708-386-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1708-55-0x0000000070E41000-0x0000000070E43000-memory.dmp

      Filesize

      8KB

    • memory/1708-269-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-270-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-271-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-58-0x0000000075111000-0x0000000075113000-memory.dmp

      Filesize

      8KB

    • memory/1708-383-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-384-0x000000000068B000-0x0000000000690000-memory.dmp

      Filesize

      20KB

    • memory/1708-385-0x0000000071E2D000-0x0000000071E38000-memory.dmp

      Filesize

      44KB