Analysis

  • max time kernel
    105s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:26

General

  • Target

    答辩16日第4组.xls

  • Size

    102KB

  • MD5

    bcd93d5d501b3d310bda5e16146e56a3

  • SHA1

    c5eb8d988c32ea4c86c7ac02f3ed1c6d73fc61bd

  • SHA256

    9c61948c892b5365ef02363b309f10da5916748e4da27acfb9386e02974d9899

  • SHA512

    bae554b45049fc599a1383705641c6821a5e857b33cffbe12895a65e2e5a224e4b56a81dc93ddc6defbfffe34d22bd15dfb9da7749cf54ef55250a5638a7a045

  • SSDEEP

    1536:8tttB3DgcYuWYWWVbrzlf7ITkR62lGM88wcJtXwRpM2M/MJkd8G:hWVbrzV7ITk9tjDJtXwk5k6dN

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\答辩16日第4组.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:1280
    • 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:892
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:688
    • 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:1644
    • 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:580

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/580-220-0x0000000000000000-mapping.dmp
  • memory/688-222-0x0000000000000000-mapping.dmp
  • memory/892-219-0x0000000000000000-mapping.dmp
  • memory/1280-77-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-383-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1280-60-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-61-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-59-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-62-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-63-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-64-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-79-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-67-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-66-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-68-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-69-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-70-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-72-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-71-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-78-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-54-0x000000002FC71000-0x000000002FC74000-memory.dmp
    Filesize

    12KB

  • memory/1280-65-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-58-0x0000000075601000-0x0000000075603000-memory.dmp
    Filesize

    8KB

  • memory/1280-83-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-74-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-73-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-80-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-81-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-75-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-82-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-85-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-84-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-86-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-87-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-109-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1280-57-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1280-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1280-385-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1280-55-0x00000000711D1000-0x00000000711D3000-memory.dmp
    Filesize

    8KB

  • memory/1280-76-0x0000000000772000-0x0000000000776000-memory.dmp
    Filesize

    16KB

  • memory/1644-221-0x0000000000000000-mapping.dmp