Analysis

  • max time kernel
    102s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 01:23

General

  • Target

    85fdabbd5e38b4e8ed43cd7ef2167676c72cfd6bc70e8680eafe7b47625b7b02.xls

  • Size

    146KB

  • MD5

    4bff992a443fa63046c64e262b787e4f

  • SHA1

    e1b3e01fd883fa53c12501804a0a16f88069f29b

  • SHA256

    85fdabbd5e38b4e8ed43cd7ef2167676c72cfd6bc70e8680eafe7b47625b7b02

  • SHA512

    385ebe026007d95916b1ce23dc0aa0eecefe386461636da4f5423c1291352c5bccb1cddf051799509dac081775885510896c307eb0c0774c5d8af93f7826a770

  • SSDEEP

    1536:qXXXz0N/x7XSqZFXxqYMEd9iNxGmXd1kLX49Z95WFaf+87gS2dS0iPn1F+WVbrIO:UWr8ZgWVbr9Q7ITkDeKJtXw5v4W5Vd

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 20 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\85fdabbd5e38b4e8ed43cd7ef2167676c72cfd6bc70e8680eafe7b47625b7b02.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:1728
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1720
      • 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:1780
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1736
      • 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:1504

    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/1360-222-0x0000000000000000-mapping.dmp
    • memory/1504-223-0x0000000000000000-mapping.dmp
    • memory/1720-59-0x0000000000000000-mapping.dmp
    • memory/1720-60-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp
      Filesize

      8KB

    • memory/1728-66-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-55-0x00000000712F1000-0x00000000712F3000-memory.dmp
      Filesize

      8KB

    • memory/1728-57-0x00000000722DD000-0x00000000722E8000-memory.dmp
      Filesize

      44KB

    • memory/1728-61-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-62-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-63-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-64-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-65-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-54-0x000000002F111000-0x000000002F114000-memory.dmp
      Filesize

      12KB

    • memory/1728-387-0x00000000722DD000-0x00000000722E8000-memory.dmp
      Filesize

      44KB

    • memory/1728-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1728-58-0x0000000076091000-0x0000000076093000-memory.dmp
      Filesize

      8KB

    • memory/1728-386-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1728-225-0x00000000722DD000-0x00000000722E8000-memory.dmp
      Filesize

      44KB

    • memory/1728-272-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-271-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-270-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-383-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-384-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1728-385-0x000000000067C000-0x000000000067F000-memory.dmp
      Filesize

      12KB

    • memory/1736-224-0x0000000000000000-mapping.dmp
    • memory/1780-221-0x0000000000000000-mapping.dmp