Analysis

  • max time kernel
    145s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 15:40

General

  • Target

    a2941a840666c728020baa0dd7b73cd750dc25d3401d6a29c0b6bb3d7aba1335.xls

  • Size

    93KB

  • MD5

    0bada76ae17a2ac27b4b31028038d0f3

  • SHA1

    03c6694d71539e22fc160b7d5439cbaefea663df

  • SHA256

    a2941a840666c728020baa0dd7b73cd750dc25d3401d6a29c0b6bb3d7aba1335

  • SHA512

    6ff7292d355ce7fa41d8e31a9aec877f79b41b47d0dfcf15b331b52505bf62fb1e6e04902277b50ca422b3695a65f062962ff604166142e3682b217a95b08868

  • SSDEEP

    1536:adddRYw4GPOWVbLwMEzQ7ITkR62l24cY7nJdFoOGIWWtwXKWqM2M/MLCp:HWVbkZzQ7ITk9Jpyas5kGp

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\a2941a840666c728020baa0dd7b73cd750dc25d3401d6a29c0b6bb3d7aba1335.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:944
    • 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:1804
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1720
    • 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:512
    • 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:1332

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/512-66-0x0000000000000000-mapping.dmp
  • memory/944-61-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-77-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/944-55-0x00000000711D1000-0x00000000711D3000-memory.dmp
    Filesize

    8KB

  • memory/944-58-0x0000000075B61000-0x0000000075B63000-memory.dmp
    Filesize

    8KB

  • memory/944-59-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-54-0x000000002F0B1000-0x000000002F0B4000-memory.dmp
    Filesize

    12KB

  • memory/944-60-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-62-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-63-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-76-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/944-57-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/944-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/944-64-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-75-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-69-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/944-70-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-71-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-72-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-73-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/944-74-0x00000000004F4000-0x0000000000504000-memory.dmp
    Filesize

    64KB

  • memory/1332-67-0x0000000000000000-mapping.dmp
  • memory/1720-68-0x0000000000000000-mapping.dmp
  • memory/1804-65-0x0000000000000000-mapping.dmp