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Analysis

  • max time kernel
    101s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18/09/2022, 22:26

General

  • Target

    42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e.xls

  • Size

    108KB

  • MD5

    55d3b2bcea799abc14492f9a46749d19

  • SHA1

    b4269a8a48deb2ce13c91a6875de089b44bad310

  • SHA256

    42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e

  • SHA512

    b6d5602e64f978282597e9c3668f53c5391df6491b208964e7bdc414a5b13c13b67494025f1c6e304982da7492b0b8f1810b4cfaf16865255b41cf8855357bab

  • SSDEEP

    1536:oeeeqreSRHrTCWJGS1102ufmgOzIE8y5LgwLOiTwhWVbKp8zmOzQ7ITkiD2gukOf:CfzIWVb9nzQ7ITkDc/MJtXwuv4DKb

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 16 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\42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e.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:1652
    • 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:520
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1720
    • 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:860
    • 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:684

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1652-54-0x000000002F3D1000-0x000000002F3D4000-memory.dmp

    Filesize

    12KB

  • memory/1652-55-0x00000000716B1000-0x00000000716B3000-memory.dmp

    Filesize

    8KB

  • memory/1652-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1652-57-0x000000007269D000-0x00000000726A8000-memory.dmp

    Filesize

    44KB

  • memory/1652-58-0x00000000758C1000-0x00000000758C3000-memory.dmp

    Filesize

    8KB

  • memory/1652-383-0x000000007269D000-0x00000000726A8000-memory.dmp

    Filesize

    44KB

  • memory/1652-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1652-385-0x000000007269D000-0x00000000726A8000-memory.dmp

    Filesize

    44KB