Analysis

  • max time kernel
    299s
  • max time network
    290s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2024, 03:36

General

  • Target
    schet1074.15.03.16.rtf
  • Size 1.1MB
  • Sample241122-d54ddstney
  • SHA256 72b14306c9f95536d03d88cf63204f70630dd9cd00664ad7f86c1d774c8508e9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Process spawned unexpected child process 4 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 39 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Office loads VBA resources, possible macro or embedded object present
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of SetWindowsHookEx 23 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\schet1074.15.03.16.rtf"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2972
      • C:\Users\Admin\AppData\Local\Temp\vmsk.exe
        C:\Users\Admin\AppData\Local\Temp\vmsk.exe
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:832
        • C:\Users\Admin\AppData\Local\Temp\vmsk.exe
          C:\Users\Admin\AppData\Local\Temp\vmsk.exe
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2400
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c reg delete "HKCU\Software\Microsoft\Office\14.0\Word\Resiliency" /F
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1752
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKCU\Software\Microsoft\Office\14.0\Word\Resiliency" /F
          3⤵
          • System Location Discovery: System Language Discovery
          PID:1628
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c reg delete "HKCU\Software\Microsoft\Office\12.0\Word\Resiliency" /F
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKCU\Software\Microsoft\Office\12.0\Word\Resiliency" /F
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2144
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c reg delete "HKCU\Software\Microsoft\Office\15.0\Word\Resiliency" /F
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKCU\Software\Microsoft\Office\15.0\Word\Resiliency" /F
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2368
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\document.doc"
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1680
        • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
          "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\document.doc"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of SetWindowsHookEx
          PID:1716

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          82F80691.wmf

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\82F80691.wmf
          • Size 664B
          • SHA256 9d5a1b9b2c0645000b91eb6ee7d2791f30afed5a6d2f8924cdd7a54ad1309ff9
          • MD5 SHA1 SHA512

          ~WRO0000.doc

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRO0000.doc
          • Size 43KB
          • SHA256 1028e211fc2c560e362344c80cbb1611cc5348b6b5c7256776c55405eea7a592
          • MD5 SHA1 SHA512 SSDEEP

          ~WRO0001.doc

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRO0001.doc
          • Size 28KB
          • SHA256 ae01daa7d73c52f0f4cb19c1eb51b9774f133defcca3aed0a5262c0ee9721418
          • MD5 SHA1 SHA512 SSDEEP

          document.doc

          • Path C:\Users\Admin\AppData\Local\Temp\document.doc
          • Size 1.1MB
          • SHA256 6f332f27bbf0831acd786596cb3ce1ecccd8e9388bf5cd529e2d24895e23e964
          • MD5 SHA1 SHA512 SSDEEP

          vmsk.exe

          • Path \Users\Admin\AppData\Local\Temp\vmsk.exe
          • Size 892KB
          • SHA256 d460e5870a252c2827b88fdfc651a033a5d5875770f21a23b476a36e56ad5a8e
          • MD5 SHA1 SHA512 SSDEEP

          memory/1716-254-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/2400-262-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-279-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-292-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-221-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-202-0x0000000000300000-0x0000000000400000-memory.dmp

          memory/2400-204-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-206-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-291-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-290-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-289-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-208-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-211-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-216-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-288-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-287-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-222-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-214-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-220-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-225-0x0000000000400000-0x0000000001400000-memory.dmp

          memory/2400-265-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-285-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-261-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-215-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          memory/2400-263-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-284-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-286-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-277-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-269-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-270-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-271-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-272-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-273-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-274-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-275-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-276-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-266-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-278-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-264-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-280-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-281-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-282-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2400-283-0x0000000000400000-0x00000000005D5000-memory.dmp

          memory/2948-2-0x00000000717BD000-0x00000000717C8000-memory.dmp

          memory/2948-0-0x000000002FA41000-0x000000002FA42000-memory.dmp

          memory/2948-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/2948-223-0x000000000CD10000-0x000000000D210000-memory.dmp

          memory/2948-224-0x0000000008FD0000-0x00000000091D0000-memory.dmp

          memory/2948-209-0x00000000717BD000-0x00000000717C8000-memory.dmp

          memory/2948-190-0x0000000008FD0000-0x00000000091D0000-memory.dmp

          memory/2948-192-0x000000000CD10000-0x000000000D210000-memory.dmp

          memory/2948-189-0x0000000008FD0000-0x00000000091D0000-memory.dmp