Analysis

  • max time kernel
    109s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 14:01

General

  • Target

    46ba5abd46413c18bfee0a5cd797587c335baa4d6fde4ad35742174925598de1.xls

  • Size

    188KB

  • MD5

    66f85cabd399b02d8556444f6300d8b0

  • SHA1

    846d9a8a90bc8d762798b8b5f0f7ac9fef190c1b

  • SHA256

    46ba5abd46413c18bfee0a5cd797587c335baa4d6fde4ad35742174925598de1

  • SHA512

    305945cdb0b19257c9e99f28b84cdee55a1b59c7039ee7a67841549291de433f763321b401127716791fb49a8df8a845cde58cbb70068d62e732f8bb31afae82

  • SSDEEP

    3072:Yhq1gxv7yZmspH7+cclKisbqb+xTENDiVWxqg7yf7pFrSMW+56eOTWVbrzQ7ITkV:D1gxv7yZmspH7+cclKisbqb+xTENDiVp

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\46ba5abd46413c18bfee0a5cd797587c335baa4d6fde4ad35742174925598de1.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:1872
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1652
      • 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:1284
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:772
      • 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:1860
      • 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:1296

    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/772-225-0x0000000000000000-mapping.dmp
    • memory/1284-222-0x0000000000000000-mapping.dmp
    • memory/1296-224-0x0000000000000000-mapping.dmp
    • memory/1652-60-0x000007FEFB7E1000-0x000007FEFB7E3000-memory.dmp
      Filesize

      8KB

    • memory/1652-59-0x0000000000000000-mapping.dmp
    • memory/1860-223-0x0000000000000000-mapping.dmp
    • memory/1872-63-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-55-0x0000000070FD1000-0x0000000070FD3000-memory.dmp
      Filesize

      8KB

    • memory/1872-62-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-61-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-64-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-65-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-66-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-127-0x0000000000383000-0x0000000000385000-memory.dmp
      Filesize

      8KB

    • memory/1872-58-0x0000000075841000-0x0000000075843000-memory.dmp
      Filesize

      8KB

    • memory/1872-57-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
      Filesize

      44KB

    • memory/1872-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1872-54-0x000000002F4D1000-0x000000002F4D4000-memory.dmp
      Filesize

      12KB

    • memory/1872-270-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-271-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-272-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-385-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-384-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-383-0x0000000000381000-0x0000000000385000-memory.dmp
      Filesize

      16KB

    • memory/1872-386-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
      Filesize

      44KB

    • memory/1872-387-0x0000000000383000-0x0000000000385000-memory.dmp
      Filesize

      8KB

    • memory/1872-388-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1872-389-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
      Filesize

      44KB