Analysis

  • max time kernel
    106s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    18-11-2022 23:06

General

  • Target

    33af20ec79d6136c4c88a6b14c9c020581d01694ed8e107a5483ff4b6cf01dd9.xls

  • Size

    102KB

  • MD5

    537f81adb0e35625a5a04c252eb9e93f

  • SHA1

    99e0a51f9d726d58e314f48d89512f0a7f822c42

  • SHA256

    33af20ec79d6136c4c88a6b14c9c020581d01694ed8e107a5483ff4b6cf01dd9

  • SHA512

    fdf755e3d3989ff12b0c682e22bd96649e52928df3f753d4257720ce9cb5bcc729a9a12859dad57d7bfca7a795ec924d3ecd635eea0662f0a0d122762e2c3130

  • SSDEEP

    1536:ZXXXPB7nNc0NHUdftWlIBydBHDDO0pZ95Iz0EoK3+82jcc0lbxOvTgZaaOeXcJtL:tMN2jcc0lbxOrU/MJtXwY2dq

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\33af20ec79d6136c4c88a6b14c9c020581d01694ed8e107a5483ff4b6cf01dd9.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:1416
    • 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:756
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:460
    • 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:1072
    • 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:268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/268-61-0x0000000000000000-mapping.dmp

  • memory/460-62-0x0000000000000000-mapping.dmp

  • memory/756-59-0x0000000000000000-mapping.dmp

  • memory/1072-60-0x0000000000000000-mapping.dmp

  • memory/1416-54-0x000000002F731000-0x000000002F734000-memory.dmp

    Filesize

    12KB

  • memory/1416-55-0x00000000711D1000-0x00000000711D3000-memory.dmp

    Filesize

    8KB

  • memory/1416-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1416-57-0x00000000721BD000-0x00000000721C8000-memory.dmp

    Filesize

    44KB

  • memory/1416-58-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

    Filesize

    8KB

  • memory/1416-63-0x00000000721BD000-0x00000000721C8000-memory.dmp

    Filesize

    44KB

  • memory/1416-64-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1416-65-0x00000000721BD000-0x00000000721C8000-memory.dmp

    Filesize

    44KB