Analysis

  • max time kernel
    103s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    5ebbfc80e2c511010a805413ec03e8a874606e85682fd01982c9e9ef778bf7fc.xls

  • Size

    103KB

  • MD5

    1c7653360ecc8073177c8c5249f4c54d

  • SHA1

    c9ead297741a2540b2a2a8a27a90ebe423f9b425

  • SHA256

    5ebbfc80e2c511010a805413ec03e8a874606e85682fd01982c9e9ef778bf7fc

  • SHA512

    d2ecc20a32dffd8d88e3a48bb8b982ac465ae7871d6df8c786586f91fc30fa2830bd97656f30c9fb0cbc4782f1663167e5cc5bb1cccfc9c3392f7b607584be2b

  • SSDEEP

    1536:syyyyl2Obscxk0mWVbrzs3Jh7ITkR62lKM88tcJtXwRFM2M/MfBC:xWVbrzA7ITk9ZjmJtXwE5kpC

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\5ebbfc80e2c511010a805413ec03e8a874606e85682fd01982c9e9ef778bf7fc.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:1756
    • 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:752
    • 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:1692
    • 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:700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/700-221-0x0000000000000000-mapping.dmp

  • memory/752-222-0x0000000000000000-mapping.dmp

  • memory/1692-220-0x0000000000000000-mapping.dmp

  • memory/1756-75-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-55-0x0000000071881000-0x0000000071883000-memory.dmp

    Filesize

    8KB

  • memory/1756-85-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-86-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-84-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-83-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-72-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-81-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-80-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-78-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-79-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-77-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-76-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-54-0x000000002F621000-0x000000002F624000-memory.dmp

    Filesize

    12KB

  • memory/1756-385-0x000000007286D000-0x0000000072878000-memory.dmp

    Filesize

    44KB

  • memory/1756-58-0x000000007286D000-0x0000000072878000-memory.dmp

    Filesize

    44KB

  • memory/1756-82-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-71-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-70-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-69-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-68-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-67-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-66-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-65-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-87-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-109-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-74-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-57-0x0000000076691000-0x0000000076693000-memory.dmp

    Filesize

    8KB

  • memory/1756-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1756-73-0x000000000056A000-0x000000000056E000-memory.dmp

    Filesize

    16KB

  • memory/1756-383-0x000000007286D000-0x0000000072878000-memory.dmp

    Filesize

    44KB

  • memory/1796-219-0x0000000000000000-mapping.dmp