Analysis

  • max time kernel
    105s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 13:06

General

  • Target

    e8c5695d419e46b333cf085ffe84813db1c85643415900d075c0bd46a311460b.xls

  • Size

    97KB

  • MD5

    7692ff912b0f31f8611b86693a99428b

  • SHA1

    5b0199a84bfc3e32cfbd5aa2d8f0203d5783c9a5

  • SHA256

    e8c5695d419e46b333cf085ffe84813db1c85643415900d075c0bd46a311460b

  • SHA512

    c944303d84d3e28ba7955421e0e14c9de1fb5653aa512b65f9a30fe8d9af08c51647a62ab74cfe93c42f82d833067ed6cd562faa894a6dd6712f87c0f6abfe99

  • SSDEEP

    1536:3IIIIkK1FSN1ebnuCWVb9TZuSzQ7ITkR62lIM88S6JtXwRZM2M/MkpR0q:nWVb9T1zQ7ITk97jDJtXws5kkiq

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\e8c5695d419e46b333cf085ffe84813db1c85643415900d075c0bd46a311460b.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:1752
    • 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:856
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:2028
    • 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:1360
    • 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:968

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/856-219-0x0000000000000000-mapping.dmp
  • memory/968-221-0x0000000000000000-mapping.dmp
  • memory/1360-220-0x0000000000000000-mapping.dmp
  • memory/1752-54-0x000000002FC21000-0x000000002FC24000-memory.dmp
    Filesize

    12KB

  • memory/1752-55-0x0000000070E41000-0x0000000070E43000-memory.dmp
    Filesize

    8KB

  • memory/1752-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1752-57-0x0000000071E2D000-0x0000000071E38000-memory.dmp
    Filesize

    44KB

  • memory/1752-58-0x0000000075111000-0x0000000075113000-memory.dmp
    Filesize

    8KB

  • memory/1752-383-0x0000000071E2D000-0x0000000071E38000-memory.dmp
    Filesize

    44KB

  • memory/1752-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1752-385-0x0000000071E2D000-0x0000000071E38000-memory.dmp
    Filesize

    44KB

  • memory/2028-222-0x0000000000000000-mapping.dmp