Analysis

  • max time kernel
    144s
  • max time network
    67s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:54

General

  • Target

    38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b.xls

  • Size

    102KB

  • MD5

    1f82b1bdae3924185845d3c1c624b407

  • SHA1

    ac544bbe29badfad77a5d3bdc99ecf3c0657c3b8

  • SHA256

    38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b

  • SHA512

    410bf653d3f805cd22774b66316e3390ac1c0c72c257315030867f1bb4c8e3c0c35250f0ecb8d7a294d72125bc798f22de43db88b59d3e600810b97362ea8413

  • SSDEEP

    3072:jTQn6v7yZmspH7+7alMisPI4ukoRWGNTxfAxo2jcc0lbxOrLHDJtXwvd:nQn6v7yZmspH7+7alMisPI4ukoRWGNTB

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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b.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 FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:684
      • 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:1704
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1620
      • 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:1984
      • 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:1616

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/588-384-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/588-412-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/588-57-0x0000000071E1D000-0x0000000071E28000-memory.dmp
      Filesize

      44KB

    • memory/588-58-0x0000000075A31000-0x0000000075A33000-memory.dmp
      Filesize

      8KB

    • memory/588-411-0x000000006BFE1000-0x000000006BFE3000-memory.dmp
      Filesize

      8KB

    • memory/588-408-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-62-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-61-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-63-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-65-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-64-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-66-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-409-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-413-0x0000000071E1D000-0x0000000071E28000-memory.dmp
      Filesize

      44KB

    • memory/588-55-0x0000000070E31000-0x0000000070E33000-memory.dmp
      Filesize

      8KB

    • memory/588-410-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-225-0x0000000071E1D000-0x0000000071E28000-memory.dmp
      Filesize

      44KB

    • memory/588-270-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-271-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-272-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-54-0x000000002F111000-0x000000002F114000-memory.dmp
      Filesize

      12KB

    • memory/588-385-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/588-383-0x0000000000789000-0x000000000078C000-memory.dmp
      Filesize

      12KB

    • memory/684-60-0x000007FEFB641000-0x000007FEFB643000-memory.dmp
      Filesize

      8KB

    • memory/684-59-0x0000000000000000-mapping.dmp
    • memory/1616-223-0x0000000000000000-mapping.dmp
    • memory/1620-224-0x0000000000000000-mapping.dmp
    • memory/1704-221-0x0000000000000000-mapping.dmp
    • memory/1984-222-0x0000000000000000-mapping.dmp