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Analysis

  • max time kernel
    186s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2022, 02:31

General

  • Target

    11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll

  • Size

    180KB

  • MD5

    cd67d3e20a6763b2380627b747d5f450

  • SHA1

    37c49e5454bddd0fc8da6c64974f753f2061e83a

  • SHA256

    11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0

  • SHA512

    e80205c50b62213188c3096aacb73293184f114ebbdf02e9f9cf97122780f7a164a609862586665d49bae29d2a8c4dd8b5f6a646556ed055a2453dc7b8f8f617

  • SSDEEP

    3072:Cn4cV8gf2u41Z5tKlI1I+hcj0B/pTBpwtqrFZz63vB24FXnHKP:I4y8gOl2+6A20BtXfWvBlFXnHKP

Score
8/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3792
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1524
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 268
          4⤵
          • Program crash
          PID:544
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 268
          4⤵
          • Program crash
          PID:4600
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 1524 -ip 1524
    1⤵
      PID:1052

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      90KB

      MD5

      91b07c6f70654a26ca1cd8cde6fb2a7e

      SHA1

      789629859ed76191432fd7ab40cfa0487b580a6e

      SHA256

      37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

      SHA512

      077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      90KB

      MD5

      91b07c6f70654a26ca1cd8cde6fb2a7e

      SHA1

      789629859ed76191432fd7ab40cfa0487b580a6e

      SHA256

      37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

      SHA512

      077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

    • memory/1524-137-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/3792-133-0x0000000010000000-0x000000001002E000-memory.dmp

      Filesize

      184KB

    • memory/3792-138-0x0000000010000000-0x000000001002E000-memory.dmp

      Filesize

      184KB