Analysis

  • max time kernel
    124s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 22:25

General

  • Target

    4f0a5d5aaa620860dcebc0341d6782ebcf39a68d65d88febb5bf48e29ed22f07.xls

  • Size

    105KB

  • MD5

    1f60e295d5ea7925d7169c021222aceb

  • SHA1

    13f745e10a098ca80cc040c12ade5f5fb6ae20a3

  • SHA256

    4f0a5d5aaa620860dcebc0341d6782ebcf39a68d65d88febb5bf48e29ed22f07

  • SHA512

    622bbe0ccc93aff647a1fb2824c1094ab18c56c7faf958bcfe9eb091f2dcbbd337e2998f60e32787097ab2711a63f83c5828a642bd83b927c5838a331610d176

  • SSDEEP

    3072:Ix1gxv7yZmspH7+cclKiscI4ukoRWGN8Jp3yZ7ulWVbrzQ7ITkDZvn1VzUu1qJt5:c1gxv7yZmspH7+cclKiscI4ukoRWGN8y

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\4f0a5d5aaa620860dcebc0341d6782ebcf39a68d65d88febb5bf48e29ed22f07.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:1224
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1512
      • 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:540
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1560
      • 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:288
      • 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:1740

    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/288-222-0x0000000000000000-mapping.dmp
    • memory/540-221-0x0000000000000000-mapping.dmp
    • memory/1224-385-0x000000007226D000-0x0000000072278000-memory.dmp
      Filesize

      44KB

    • memory/1224-55-0x0000000071281000-0x0000000071283000-memory.dmp
      Filesize

      8KB

    • memory/1224-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1224-57-0x000000007226D000-0x0000000072278000-memory.dmp
      Filesize

      44KB

    • memory/1224-58-0x0000000076041000-0x0000000076043000-memory.dmp
      Filesize

      8KB

    • memory/1224-387-0x000000007226D000-0x0000000072278000-memory.dmp
      Filesize

      44KB

    • memory/1224-54-0x000000002FDC1000-0x000000002FDC4000-memory.dmp
      Filesize

      12KB

    • memory/1224-386-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1512-60-0x000007FEFBB81000-0x000007FEFBB83000-memory.dmp
      Filesize

      8KB

    • memory/1512-59-0x0000000000000000-mapping.dmp
    • memory/1560-224-0x0000000000000000-mapping.dmp
    • memory/1740-223-0x0000000000000000-mapping.dmp