Analysis

  • max time kernel
    106s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 01:22

General

  • Target

    a1896a4d45191116009148479dd332397c53976cce2eda0e5f75282a6075b904.xls

  • Size

    110KB

  • MD5

    799082d64000a1289c9f154346278d8d

  • SHA1

    91386a1264ed779387bc0f6989b8f0add5623965

  • SHA256

    a1896a4d45191116009148479dd332397c53976cce2eda0e5f75282a6075b904

  • SHA512

    f53865642e152481786022ad22dea07dee6d381d3827af43b421e60da6e6340dbe9bbf99ce1ca078ad8e20f8cd73eeadc5c5c1eb41db04907f4363023a953c9c

  • SSDEEP

    3072:y61gxv7yZmspH7+cclKisEI4ukoRWGNrAzWVbrTQ7ITkPzfoJtXwn6wv4aB:x1gxv7yZmspH7+cclKisEI4ukoRWGNJ8

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\a1896a4d45191116009148479dd332397c53976cce2eda0e5f75282a6075b904.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:1300
    • 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:276
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1440
    • 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:2028
    • 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:1092

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/276-219-0x0000000000000000-mapping.dmp

  • memory/1092-221-0x0000000000000000-mapping.dmp

  • memory/1300-54-0x000000002FFF1000-0x000000002FFF4000-memory.dmp

    Filesize

    12KB

  • memory/1300-55-0x0000000070F01000-0x0000000070F03000-memory.dmp

    Filesize

    8KB

  • memory/1300-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1300-57-0x0000000071EED000-0x0000000071EF8000-memory.dmp

    Filesize

    44KB

  • memory/1300-58-0x00000000757A1000-0x00000000757A3000-memory.dmp

    Filesize

    8KB

  • memory/1300-383-0x0000000071EED000-0x0000000071EF8000-memory.dmp

    Filesize

    44KB

  • memory/1300-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1300-385-0x0000000071EED000-0x0000000071EF8000-memory.dmp

    Filesize

    44KB

  • memory/1440-222-0x0000000000000000-mapping.dmp

  • memory/2028-220-0x0000000000000000-mapping.dmp