Analysis

  • max time kernel
    101s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:14

General

  • Target

    ͨ2014ҵҵʿܱ.xls

  • Size

    211KB

  • MD5

    e63ab2c9512dc3c9b7c9c28491a724df

  • SHA1

    254eb5e98bdd01c3dfba360297bc0c43a9945ca4

  • SHA256

    a98923840dd7e2ed8517a6801db2e3f0055fc8989a552ec4c3a481a9b829e37e

  • SHA512

    5cc54956bf722fc28315752b1b706aa92d50262b6dc94edae5f303fb5c68c25ad482b2c667f1f91946c9fe34973f2b654410648f084aaffa7d63e9475237b56e

  • SSDEEP

    3072:eyhupeBXN0SK+1iBvM81KQigOqbk6Bqly32jcc0lbxOKE/MJtXwMwdF:xUZ7c04gO9avw

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\ͨ2014ҵҵʿܱ.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:1340
    • 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:1716
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:632
    • 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:1780
    • 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:1224

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/632-222-0x0000000000000000-mapping.dmp
  • memory/1224-221-0x0000000000000000-mapping.dmp
  • memory/1340-54-0x000000002FC61000-0x000000002FC64000-memory.dmp
    Filesize

    12KB

  • memory/1340-55-0x0000000070F31000-0x0000000070F33000-memory.dmp
    Filesize

    8KB

  • memory/1340-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1340-57-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB

  • memory/1340-58-0x0000000074DE1000-0x0000000074DE3000-memory.dmp
    Filesize

    8KB

  • memory/1340-408-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB

  • memory/1340-409-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1340-410-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB

  • memory/1716-219-0x0000000000000000-mapping.dmp
  • memory/1780-220-0x0000000000000000-mapping.dmp