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Analysis

  • max time kernel
    103s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    31/01/2023, 17:35

General

  • Target

    4590cf370ce0f92252f7bed7174715d7.xls

  • Size

    95KB

  • MD5

    4590cf370ce0f92252f7bed7174715d7

  • SHA1

    08bd23f2c0dec73ad0c4b73f7a79b7fac607af83

  • SHA256

    61b1dcf1421055070d7008f46e50b49b8875ce74497bf0da99e64575660c1887

  • SHA512

    a6073af124c10a87c5e5ab940c51cea4a041f87592b59c0a8dcb7b2eda34205022407d60b6f9edaf8e23a0d1134c514bbe54c95770386651d4a46dcd9590cf5c

  • SSDEEP

    1536:wuuuoHPa4Rz/Sbj13z/vHfQse0Z95rt3rYMPaw2jcc0lbxOvTgEfoRt/WwF16Qm:vt3iw2jcc0lbxOrxGphm

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\4590cf370ce0f92252f7bed7174715d7.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:1108
    • 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:1400
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1344
    • 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:916
    • 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:852

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1108-71-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-73-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-58-0x00000000767F1000-0x00000000767F3000-memory.dmp

    Filesize

    8KB

  • memory/1108-59-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-60-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-61-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-62-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-63-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-65-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-66-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-64-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-68-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-69-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-67-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-54-0x000000002F751000-0x000000002F754000-memory.dmp

    Filesize

    12KB

  • memory/1108-70-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-57-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB

  • memory/1108-74-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-72-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-76-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-77-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-75-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-79-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-78-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-80-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-81-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-103-0x0000000000390000-0x0000000000394000-memory.dmp

    Filesize

    16KB

  • memory/1108-373-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB

  • memory/1108-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1108-55-0x00000000719A1000-0x00000000719A3000-memory.dmp

    Filesize

    8KB

  • memory/1108-371-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB