Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:38

General

  • Target

    VirusShare_313322ef85ad7c943bc930fc900f7940.dll

  • Size

    88KB

  • MD5

    313322ef85ad7c943bc930fc900f7940

  • SHA1

    8170be7ecc998cb89e155c6f1b5cf0e5e7c9600e

  • SHA256

    baed2b676b376de604b41c4bf0f66d106085d96402acecae77ddc749fff50f74

  • SHA512

    39a1e60cd5361be117b628e8b14972c74c7274ddf31a42ddc4e44d800b539605090a2b98a9b7f4c937228b0ee88d913ef14340cf7cce0a5deeb4f368913acfbd

  • SSDEEP

    1536:KMxqUyvZNNm8CR0DBe6mC5ktbg5llhZNfvoipKKa3:KMQxjCiVHCg5PhLv5kKa

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 14 IoCs
  • UPX packed file 18 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer Protected Mode 1 TTPs 5 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 16 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\VirusShare_313322ef85ad7c943bc930fc900f7940.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\VirusShare_313322ef85ad7c943bc930fc900f7940.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:5112
      • C:\PROGRA~3\rundll32.exe
        C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG00
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:1728
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG01
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1528
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG02
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          PID:4224
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG03
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies Internet Explorer Protected Mode
          • Modifies Internet Explorer Protected Mode Banner
          • Modifies Internet Explorer settings
          • Suspicious use of WriteProcessMemory
          PID:4984
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3924
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3924 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4352
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG04
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1368
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jejmrv.dat,FG06
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1224

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\ProgramData\jejmrv.dat

          Filesize

          88KB

          MD5

          313322ef85ad7c943bc930fc900f7940

          SHA1

          8170be7ecc998cb89e155c6f1b5cf0e5e7c9600e

          SHA256

          baed2b676b376de604b41c4bf0f66d106085d96402acecae77ddc749fff50f74

          SHA512

          39a1e60cd5361be117b628e8b14972c74c7274ddf31a42ddc4e44d800b539605090a2b98a9b7f4c937228b0ee88d913ef14340cf7cce0a5deeb4f368913acfbd

        • C:\ProgramData\rundll32.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

        • memory/1224-105-0x0000000000CA0000-0x0000000000CCE000-memory.dmp

          Filesize

          184KB

        • memory/1224-93-0x0000000000CA0000-0x0000000000CCE000-memory.dmp

          Filesize

          184KB

        • memory/1224-85-0x0000000000CA0000-0x0000000000CCE000-memory.dmp

          Filesize

          184KB

        • memory/1224-54-0x0000000000CA0000-0x0000000000CCE000-memory.dmp

          Filesize

          184KB

        • memory/1224-47-0x0000000000CA0000-0x0000000000CCE000-memory.dmp

          Filesize

          184KB

        • memory/1368-46-0x0000000002440000-0x000000000246E000-memory.dmp

          Filesize

          184KB

        • memory/1368-72-0x0000000002440000-0x000000000246E000-memory.dmp

          Filesize

          184KB

        • memory/1368-53-0x0000000002440000-0x000000000246E000-memory.dmp

          Filesize

          184KB

        • memory/1528-43-0x0000000000A50000-0x0000000000A7E000-memory.dmp

          Filesize

          184KB

        • memory/1728-18-0x0000000000C60000-0x0000000000C61000-memory.dmp

          Filesize

          4KB

        • memory/1728-42-0x0000000000D70000-0x0000000000D9E000-memory.dmp

          Filesize

          184KB

        • memory/1728-60-0x0000000000C60000-0x0000000000C61000-memory.dmp

          Filesize

          4KB

        • memory/1728-61-0x0000000000D70000-0x0000000000D9B000-memory.dmp

          Filesize

          172KB

        • memory/1728-19-0x0000000000D70000-0x0000000000D9B000-memory.dmp

          Filesize

          172KB

        • memory/4224-44-0x00000000006B0000-0x00000000006DE000-memory.dmp

          Filesize

          184KB

        • memory/4984-45-0x0000000001110000-0x000000000113E000-memory.dmp

          Filesize

          184KB

        • memory/5112-56-0x00000000010D0000-0x00000000010FB000-memory.dmp

          Filesize

          172KB

        • memory/5112-55-0x0000000001020000-0x0000000001021000-memory.dmp

          Filesize

          4KB

        • memory/5112-41-0x00000000030D0000-0x00000000030FE000-memory.dmp

          Filesize

          184KB

        • memory/5112-2-0x00000000010D0000-0x00000000010FB000-memory.dmp

          Filesize

          172KB

        • memory/5112-9-0x00000000010D0000-0x00000000010FE000-memory.dmp

          Filesize

          184KB

        • memory/5112-1-0x0000000001020000-0x0000000001021000-memory.dmp

          Filesize

          4KB