Analysis

  • max time kernel
    115s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 00:28

General

  • Target
    20230308_39362_0012.doc
  • Size 531.3MB
  • Sample230308-asgr3sda82
  • SHA256 a13b394e4017c0c77faf4fab6c3aea4de3443f11610cc85a1d677249b9b2bc3a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 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\20230308_39362_0012.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\012906.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1568
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\012906.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:828
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\LOglqoZCaVYvCowt\RVTUZtbJbDOPLn.dll"
          4⤵
            PID:1676
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1908

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            012906.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\012906.tmp
            • Size 529.7MB
            • SHA256 b0412b6bf2bf2ea874ef2a7f0967956d20f6fe5aa75604755dd234b71faaba6a
            • MD5 SHA1 SHA512 SSDEEP

            012909.zip

            • Path C:\Users\Admin\AppData\Local\Temp\012909.zip
            • Size 865KB
            • SHA256 aec340c95f213670f01b8cd095ba9a8b64e8ff18103517edc9168581e999a5b2
            • MD5 SHA1 SHA512 SSDEEP

            Normal.dotm

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
            • Size 20KB
            • SHA256 3ca164248801fa3aaf6d37b3306d078084a64fd708a898d69a66805ebeea8846
            • MD5 SHA1 SHA512 SSDEEP

            012906.tmp

            • Path \Users\Admin\AppData\Local\Temp\012906.tmp
            • Size 529.7MB
            • SHA256 b0412b6bf2bf2ea874ef2a7f0967956d20f6fe5aa75604755dd234b71faaba6a
            • MD5 SHA1 SHA512 SSDEEP

            012906.tmp

            • Path \Users\Admin\AppData\Local\Temp\012906.tmp
            • Size 529.7MB
            • SHA256 b0412b6bf2bf2ea874ef2a7f0967956d20f6fe5aa75604755dd234b71faaba6a
            • MD5 SHA1 SHA512 SSDEEP

            memory/828-1264-0x0000000000120000-0x0000000000121000-memory.dmp

            memory/1676-1296-0x0000000000140000-0x0000000000141000-memory.dmp

            memory/1920-96-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-98-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-87-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-89-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-90-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-91-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-94-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-93-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-95-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

            memory/1920-97-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-92-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-88-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-86-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-121-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-125-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-163-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-205-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-85-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-1077-0x00000000062F0000-0x00000000062F1000-memory.dmp

            memory/1920-84-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-80-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-82-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-83-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-1269-0x00000000062F0000-0x00000000062F1000-memory.dmp

            memory/1920-81-0x00000000006B0000-0x00000000007B0000-memory.dmp

            memory/1920-79-0x00000000006B0000-0x00000000007B0000-memory.dmp