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Analysis

  • max time kernel
    119s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19/03/2024, 17:21

General

  • Target

    d6b05f99d5f1aeefdbfa2a90efc6599a.xls

  • Size

    124KB

  • MD5

    d6b05f99d5f1aeefdbfa2a90efc6599a

  • SHA1

    07168be1e7dcd6ab4d5517255f7516c5059e1140

  • SHA256

    38d9bebdb5bd6901ec16315640333c4dd136db87edc47fe32c4f2550c887038f

  • SHA512

    39f3a8694f854824b58fc2dc99dfe4dd63d6b9276935b8be83e276a3a8fc47b02b2cddd1857f6d6b389808053627696adea02dcd3016a4570c48954eeed459b8

  • SSDEEP

    1536:A+++ZmDVQtb88zcJLP1QvkezSsfeqmqmbkmYqORgpa2j/E8hWVbrzQ7IQOkbA2s8:uGRgWVbrzQ7I9kZABJtXwp

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\d6b05f99d5f1aeefdbfa2a90efc6599a.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:1548
    • 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:1240
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:2296
    • 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:1192
    • 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:856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1548-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1548-1-0x0000000071E0D000-0x0000000071E18000-memory.dmp

    Filesize

    44KB

  • memory/1548-5-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-31-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-32-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-57-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-94-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-123-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-125-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-169-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-170-0x0000000071E0D000-0x0000000071E18000-memory.dmp

    Filesize

    44KB

  • memory/1548-187-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-189-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-217-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-246-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-248-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-244-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-270-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-271-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-301-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-302-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-330-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-331-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-343-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-348-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-349-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-350-0x0000000005E60000-0x0000000005F60000-memory.dmp

    Filesize

    1024KB

  • memory/1548-353-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1548-354-0x0000000071E0D000-0x0000000071E18000-memory.dmp

    Filesize

    44KB