Analysis

  • max time kernel
    100s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:54

General

  • Target

    c78a75a2c2909fb4fe63767308fff176d80af3ae3037677271a36aea382a85c5.xls

  • Size

    96KB

  • MD5

    73d92c3deade678d26fe9945f46ab864

  • SHA1

    302d28a84dfcfb4a083d0cf5af916d514fbdb58f

  • SHA256

    c78a75a2c2909fb4fe63767308fff176d80af3ae3037677271a36aea382a85c5

  • SHA512

    8d926a517c6395b03bfee51a7fdda9b25c7be497b2cb99a77752bd56735e93fde3a4eed2d727c2f7e68e047d9c001f6a499a8067aa9d6e53ef316c99c9f47951

  • SSDEEP

    3072:Wd1gxv7yZmspH7+cclKisPI4ukoRWGN6WVbrzQ7ITkFIBAww33XjUJtXwm:S1gxv7yZmspH7+cclKisPI4ukoRWGNc+

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 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\c78a75a2c2909fb4fe63767308fff176d80af3ae3037677271a36aea382a85c5.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:1708
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1696
      • 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:2028
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1280
      • 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:452
      • 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:1064

    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/452-222-0x0000000000000000-mapping.dmp
    • memory/1064-223-0x0000000000000000-mapping.dmp
    • memory/1280-224-0x0000000000000000-mapping.dmp
    • memory/1696-59-0x0000000000000000-mapping.dmp
    • memory/1696-60-0x000007FEFB7F1000-0x000007FEFB7F3000-memory.dmp
      Filesize

      8KB

    • memory/1708-78-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-80-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-67-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-68-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-75-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-74-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-73-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-72-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-71-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-70-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-69-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-77-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-76-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-54-0x000000002F0D1000-0x000000002F0D4000-memory.dmp
      Filesize

      12KB

    • memory/1708-79-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-58-0x0000000075111000-0x0000000075113000-memory.dmp
      Filesize

      8KB

    • memory/1708-81-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-82-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-83-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-84-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-85-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-86-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-87-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-88-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-89-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-111-0x00000000004CB000-0x00000000004CE000-memory.dmp
      Filesize

      12KB

    • memory/1708-387-0x0000000071E2D000-0x0000000071E38000-memory.dmp
      Filesize

      44KB

    • memory/1708-57-0x0000000071E2D000-0x0000000071E38000-memory.dmp
      Filesize

      44KB

    • memory/1708-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1708-55-0x0000000070E41000-0x0000000070E43000-memory.dmp
      Filesize

      8KB

    • memory/1708-385-0x0000000071E2D000-0x0000000071E38000-memory.dmp
      Filesize

      44KB

    • memory/2028-221-0x0000000000000000-mapping.dmp