Analysis

  • max time kernel
    107s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 02:38

General

  • Target

    56d7e424514d55c68847833f16ffe8052b9ac683cc47e8c5ade3b398916ae5cf.xls

  • Size

    114KB

  • MD5

    e58e1afc01e7a802287a298c3c008aa0

  • SHA1

    4910b7fbd284777a487e5ad37c717d638dfbf169

  • SHA256

    56d7e424514d55c68847833f16ffe8052b9ac683cc47e8c5ade3b398916ae5cf

  • SHA512

    7abd31d0d137eee2fc31c295dff761a8b15624db2ab11f7828146e8b8a4b257d47d17eac810805831f032e1d0063ef2ec8ba65051b5b13199acc7a2341789756

  • SSDEEP

    3072:GZl6Nc7yRzs1H75wkZUgs6zEOSq6/cgf+WVbrzQsqewITk9yEdJtXwnv4OBWe:4l6Nc7yRzs1H75wkZUgs6zEOSq6/cgf/

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 5 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\56d7e424514d55c68847833f16ffe8052b9ac683cc47e8c5ade3b398916ae5cf.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:956
    • 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:1692
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:920
    • 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:1088
    • 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:732

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Modify Registry

1
T1112

Hidden Files and Directories

1
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/732-61-0x0000000000000000-mapping.dmp
  • memory/920-62-0x0000000000000000-mapping.dmp
  • memory/956-54-0x000000002F551000-0x000000002F554000-memory.dmp
    Filesize

    12KB

  • memory/956-55-0x00000000711D1000-0x00000000711D3000-memory.dmp
    Filesize

    8KB

  • memory/956-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/956-57-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/956-58-0x0000000075B61000-0x0000000075B63000-memory.dmp
    Filesize

    8KB

  • memory/956-63-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/956-64-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1088-60-0x0000000000000000-mapping.dmp
  • memory/1692-59-0x0000000000000000-mapping.dmp