Analysis

  • max time kernel
    112s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-09-2022 22:30

General

  • Target

    09b58716325806bac50dcf2dfde444caa072e5f849989842627fe05f5a413b34.xls

  • Size

    311KB

  • MD5

    5bf79856369c5765b14190e56d34d897

  • SHA1

    41a56dbf55aa7fb16bca645faeaa5b2fabd2e65e

  • SHA256

    09b58716325806bac50dcf2dfde444caa072e5f849989842627fe05f5a413b34

  • SHA512

    5e7eb824fb37746a677105e9eecb898b9ac01e7a95d4e9d0a39775c9dec130645edd1c30b8929ee9b2e70cff4cf6a7ea1cb2c4b5bc41feae68341f1d198eb796

  • SSDEEP

    6144:Sl6Nc7yRzs1H75wkZUgseI4ukoRWGNYcwEp2VmDBAaCIKJoHEhSWs8VBBPWxw:qt9VmDBJCIHEJs8VBBP

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 FindShellTrayWindow 2 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\09b58716325806bac50dcf2dfde444caa072e5f849989842627fe05f5a413b34.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 FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1520
      • 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:916
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1468
      • 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:1104
      • 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:1680

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/576-54-0x000000002F9F1000-0x000000002F9F4000-memory.dmp

      Filesize

      12KB

    • memory/576-55-0x00000000717A1000-0x00000000717A3000-memory.dmp

      Filesize

      8KB

    • memory/576-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/576-57-0x000000007278D000-0x0000000072798000-memory.dmp

      Filesize

      44KB

    • memory/576-58-0x0000000075911000-0x0000000075913000-memory.dmp

      Filesize

      8KB

    • memory/576-59-0x000000007278D000-0x0000000072798000-memory.dmp

      Filesize

      44KB

    • memory/576-67-0x000000007278D000-0x0000000072798000-memory.dmp

      Filesize

      44KB

    • memory/576-66-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/916-62-0x0000000000000000-mapping.dmp

    • memory/1104-63-0x0000000000000000-mapping.dmp

    • memory/1468-65-0x0000000000000000-mapping.dmp

    • memory/1520-61-0x000007FEFBF01000-0x000007FEFBF03000-memory.dmp

      Filesize

      8KB

    • memory/1520-60-0x0000000000000000-mapping.dmp

    • memory/1680-64-0x0000000000000000-mapping.dmp