Analysis

  • max time kernel
    100s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 12:44

General

  • Target

    fe09648a515725512006fac26894046454340afe195dced36b632ef4c164e7a1.xls

  • Size

    123KB

  • MD5

    b709b870c9c26ab8fdfd61e776c76c61

  • SHA1

    0ec293a3dd3f49c996dfa02e3efcd529dcca62c4

  • SHA256

    fe09648a515725512006fac26894046454340afe195dced36b632ef4c164e7a1

  • SHA512

    3857181a7986db0e440ab3b1875ca6678f17fa869a21aa239f485ac8994319fa026579dd7d33c7023b24e7d16c1bb1cb2d4d0d94148e95b42e3ecc2b8aeab726

  • SSDEEP

    3072:ioz9CZ4mJWRMT67EI7fsCqGXkjTLkimXK8SJwwI2jcc0lbxOrWUJtXwMR:ioz9CZ4mJWRMT67EI7fsCqGXkjTLkim

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\fe09648a515725512006fac26894046454340afe195dced36b632ef4c164e7a1.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:1400
    • 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:268
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:832
    • 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:1688
    • 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:1164

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/268-219-0x0000000000000000-mapping.dmp

  • memory/832-222-0x0000000000000000-mapping.dmp

  • memory/1164-220-0x0000000000000000-mapping.dmp

  • memory/1400-54-0x000000002FD71000-0x000000002FD74000-memory.dmp

    Filesize

    12KB

  • memory/1400-55-0x0000000071141000-0x0000000071143000-memory.dmp

    Filesize

    8KB

  • memory/1400-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1400-57-0x000000007212D000-0x0000000072138000-memory.dmp

    Filesize

    44KB

  • memory/1400-58-0x0000000074F01000-0x0000000074F03000-memory.dmp

    Filesize

    8KB

  • memory/1400-383-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1400-384-0x000000007212D000-0x0000000072138000-memory.dmp

    Filesize

    44KB

  • memory/1688-221-0x0000000000000000-mapping.dmp