Analysis

  • max time kernel
    124s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:26

General

  • Target

    a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.xls

  • Size

    92KB

  • MD5

    d5b5f9a2bbcd1dace2067604967cecf9

  • SHA1

    6dd5d8d7eb265aeba616ba0cf68f5e68cc408451

  • SHA256

    a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8

  • SHA512

    175ec07fb1d5ff3edea343501c9a7abf8e875d262f3ae6aacfb32368a51dc74a9def3f391f727bd19eff88b0ad4879f09ca1fffc3512d786b7c1e77a5cba47a0

  • SSDEEP

    1536:izzzXha7HJzAWDbrzQ7ITkbIOLA23IM88S/JtXwgodJ:YWDbrzQ7ITkEERj2JtXwddJ

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\a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.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:872
    • 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:1776
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1588
    • 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:1388
    • 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:1692

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/872-75-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-61-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/872-54-0x000000002FD01000-0x000000002FD04000-memory.dmp
    Filesize

    12KB

  • memory/872-58-0x0000000075B41000-0x0000000075B43000-memory.dmp
    Filesize

    8KB

  • memory/872-73-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-59-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-74-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-65-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-84-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-85-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-86-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-83-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-82-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-81-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-80-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-79-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-78-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-77-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-76-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-57-0x00000000727FD000-0x0000000072808000-memory.dmp
    Filesize

    44KB

  • memory/872-55-0x0000000071811000-0x0000000071813000-memory.dmp
    Filesize

    8KB

  • memory/872-60-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-72-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-71-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-70-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-69-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-68-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-67-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-66-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-64-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-63-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-62-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-87-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-109-0x00000000006BD000-0x00000000006CD000-memory.dmp
    Filesize

    64KB

  • memory/872-385-0x00000000727FD000-0x0000000072808000-memory.dmp
    Filesize

    44KB

  • memory/872-383-0x00000000727FD000-0x0000000072808000-memory.dmp
    Filesize

    44KB

  • memory/1388-220-0x0000000000000000-mapping.dmp
  • memory/1588-222-0x0000000000000000-mapping.dmp
  • memory/1692-221-0x0000000000000000-mapping.dmp
  • memory/1776-219-0x0000000000000000-mapping.dmp