Analysis

  • max time kernel
    100s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06/11/2022, 22:29

General

  • Target

    266c90503b64e989cc25668a98c5b574070c3e95e192e27cad209b502408351f.xls

  • Size

    149KB

  • MD5

    045173f653be2ba94d61c72aa2522a50

  • SHA1

    2ff7e27f5f141e63babbe244fdfa6f61337fbac6

  • SHA256

    266c90503b64e989cc25668a98c5b574070c3e95e192e27cad209b502408351f

  • SHA512

    c9d956898b7909aec19ce2992f6cfb5a4c6785cc277e46e41222e644ee7cf3a2aef45b42287d9fa3c03a78d16b69520bfcf10553dcd45471098fb2728d04c066

  • SSDEEP

    1536:S666LuWCOqeHqYfMf5PAzzpUvWBFysec/IFoYdNn2jcc0lbxOvTgZbzG8WWt2XK+:di5PAzzmvqFyvn2jcc0lbxOrsGBaG5

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\266c90503b64e989cc25668a98c5b574070c3e95e192e27cad209b502408351f.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:1972
    • 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:428
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:528
    • 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:520
    • 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:1844

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1972-54-0x000000002F041000-0x000000002F044000-memory.dmp

          Filesize

          12KB

        • memory/1972-55-0x0000000071001000-0x0000000071003000-memory.dmp

          Filesize

          8KB

        • memory/1972-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/1972-57-0x0000000071FED000-0x0000000071FF8000-memory.dmp

          Filesize

          44KB

        • memory/1972-58-0x0000000075981000-0x0000000075983000-memory.dmp

          Filesize

          8KB

        • memory/1972-223-0x0000000071FED000-0x0000000071FF8000-memory.dmp

          Filesize

          44KB

        • memory/1972-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/1972-385-0x0000000071FED000-0x0000000071FF8000-memory.dmp

          Filesize

          44KB