Analysis

  • max time kernel
    105s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 14:40

General

  • Target

    b12d4d1e500ad000ea311807c1b26b21124023c5b11be0da100cf8134aa8d723.xls

  • Size

    94KB

  • MD5

    468324f84129ff506b255abd46dcbaf5

  • SHA1

    2574d02d210b81cc11cf6d31818fbc93fa41e30d

  • SHA256

    b12d4d1e500ad000ea311807c1b26b21124023c5b11be0da100cf8134aa8d723

  • SHA512

    f93925f664c75a2c57febac9546b150e3f4f4d5bf18dcad0f3cb2c38cb2b83196509791a44a3fff14b46889fe306578d534c64dc75d91aaa06b213d914ea6f6c

  • SSDEEP

    1536:1EEEoM2v32gv8EhWVbrzQ7ITkfslwA23cM88SAJtXwn4v60:5DWVbrzQ7ITk7tjFJtXwy60

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\b12d4d1e500ad000ea311807c1b26b21124023c5b11be0da100cf8134aa8d723.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:1376
    • 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:1164
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1472
    • 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:1756
    • 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:1764

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/1164-219-0x0000000000000000-mapping.dmp
  • memory/1376-54-0x000000002FF01000-0x000000002FF04000-memory.dmp
    Filesize

    12KB

  • memory/1376-55-0x0000000071451000-0x0000000071453000-memory.dmp
    Filesize

    8KB

  • memory/1376-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1376-57-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/1376-58-0x0000000075091000-0x0000000075093000-memory.dmp
    Filesize

    8KB

  • memory/1376-383-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/1376-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1376-385-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/1472-222-0x0000000000000000-mapping.dmp
  • memory/1756-220-0x0000000000000000-mapping.dmp
  • memory/1764-221-0x0000000000000000-mapping.dmp