Analysis

  • max time kernel
    160s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 09:26

General

  • Target

    dac938953a16e9e0c9dbf5a606036d290b8af6196e4d4dae404979e22039ebd8.xls

  • Size

    112KB

  • MD5

    0336cc436c787765c00b01821481c57d

  • SHA1

    e8aa9104a0e783b1c07bf3aa16403d30bf70b1eb

  • SHA256

    dac938953a16e9e0c9dbf5a606036d290b8af6196e4d4dae404979e22039ebd8

  • SHA512

    7e7bc4d9953d84cca74c23105442b1cfc0130cebcb333198d1b88c5b833b261739bd432fa43c37a08ab139f9752ef5903d865d927aebad0efce35b05bb99ed5b

  • SSDEEP

    1536:kYYYUMEx+QbmVLZjPWVbrzQ7eqDTkR62lZ4frbWWt2XKs1M2M/MBN/Aq:+8WVbrzQ7eiTk9cjqaV5kDd

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 4 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 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\dac938953a16e9e0c9dbf5a606036d290b8af6196e4d4dae404979e22039ebd8.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:1496
    • 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:1124
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1388
    • 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:820
    • 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:912
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" E:\KK\dac938953a16e9e0c9dbf5a606036d290b8af6196e4d4dae404979e22039ebd8_Search.vbs
      2⤵
      • Process spawned unexpected child process
      PID:1520

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/820-220-0x0000000000000000-mapping.dmp
  • memory/912-221-0x0000000000000000-mapping.dmp
  • memory/1124-219-0x0000000000000000-mapping.dmp
  • memory/1388-222-0x0000000000000000-mapping.dmp
  • memory/1496-57-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1496-58-0x0000000076161000-0x0000000076163000-memory.dmp
    Filesize

    8KB

  • memory/1496-54-0x000000002F3A1000-0x000000002F3A4000-memory.dmp
    Filesize

    12KB

  • memory/1496-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1496-55-0x0000000071481000-0x0000000071483000-memory.dmp
    Filesize

    8KB

  • memory/1496-223-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1496-429-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1496-430-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1520-312-0x0000000000000000-mapping.dmp