Analysis

  • max time kernel
    127s
  • max time network
    41s
  • 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

    4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4.xls

  • Size

    106KB

  • MD5

    bbbc0d4bba4cf691a1cf7d30c0d1d31c

  • SHA1

    335ded5a0eaac72c4090c293a631af57085e9a7d

  • SHA256

    4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4

  • SHA512

    3a47789281f27f1c7f22d9b40dea9d9346adc9cfa09a4ee25bec2540477a8589136d601469d66cee38a9605992b129acf2284f09edace9d8ad17eec7c590448d

  • SSDEEP

    3072:4UZ1gxv7yZmspH7+cclKisQ6NqTBun5ob57YWVbrzQ7IO7kTE7hVlFlDUJtXwj:441gxv7yZmspH7+cclKisQ6NqTBun5o/

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\4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4.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:364
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:984
      • 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:1796
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1696
      • 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:1800
      • 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:2044

    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/364-270-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/364-66-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-386-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/364-58-0x0000000076681000-0x0000000076683000-memory.dmp
      Filesize

      8KB

    • memory/364-385-0x000000007256D000-0x0000000072578000-memory.dmp
      Filesize

      44KB

    • memory/364-384-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-61-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-62-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-63-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-64-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-65-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-387-0x000000007256D000-0x0000000072578000-memory.dmp
      Filesize

      44KB

    • memory/364-55-0x0000000071581000-0x0000000071583000-memory.dmp
      Filesize

      8KB

    • memory/364-57-0x000000007256D000-0x0000000072578000-memory.dmp
      Filesize

      44KB

    • memory/364-383-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-382-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-269-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/364-54-0x000000002F9A1000-0x000000002F9A4000-memory.dmp
      Filesize

      12KB

    • memory/364-271-0x000000000055F000-0x0000000000568000-memory.dmp
      Filesize

      36KB

    • memory/984-60-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp
      Filesize

      8KB

    • memory/984-59-0x0000000000000000-mapping.dmp
    • memory/1696-224-0x0000000000000000-mapping.dmp
    • memory/1796-221-0x0000000000000000-mapping.dmp
    • memory/1800-222-0x0000000000000000-mapping.dmp
    • memory/2044-223-0x0000000000000000-mapping.dmp