Analysis

  • max time kernel
    102s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    d9f077cc38971ac8e71365f169088dae6dc80607218de597143898b239f60bca.xls

  • Size

    109KB

  • MD5

    03f4c4372a116cb2879ab06f3a2f7d70

  • SHA1

    986f213500b777eab01ccd64cfde9e8941d6a3c6

  • SHA256

    d9f077cc38971ac8e71365f169088dae6dc80607218de597143898b239f60bca

  • SHA512

    00df5be0cbb1edb1eb38b23e614295552a4a42e1c5117dfb219507fe943c234cba6aadac8ab6b7a9ae951c37b9545c993423a3bce302f2a37656b41f672b3749

  • SSDEEP

    1536:gQQQQe9fD7KqF1ae5ZQKib096ZcETgZ9591eKcIVGsMVsWViBWcJrzQ7ITkR62lC:6c8KcM9WV1yrzQ7ITk9kjqae5kfN

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\d9f077cc38971ac8e71365f169088dae6dc80607218de597143898b239f60bca.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:1236
    • 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:1556
    • 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:1084
    • 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:1020

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/520-65-0x0000000000000000-mapping.dmp
  • memory/1020-67-0x0000000000000000-mapping.dmp
  • memory/1084-66-0x0000000000000000-mapping.dmp
  • memory/1236-54-0x000000002F8E1000-0x000000002F8E4000-memory.dmp
    Filesize

    12KB

  • memory/1236-55-0x0000000071C11000-0x0000000071C13000-memory.dmp
    Filesize

    8KB

  • memory/1236-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1236-57-0x0000000075B11000-0x0000000075B13000-memory.dmp
    Filesize

    8KB

  • memory/1236-58-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB

  • memory/1236-75-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB

  • memory/1236-76-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1236-77-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB

  • memory/1556-68-0x0000000000000000-mapping.dmp