Analysis

  • max time kernel
    171s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2024, 23:24

General

  • Target

    78a9c32a4f8e84a1fac417b3621be3b4.exe

  • Size

    402KB

  • MD5

    78a9c32a4f8e84a1fac417b3621be3b4

  • SHA1

    8503b246c13b9367fe086df8b3a902d03f131057

  • SHA256

    c48f8cf91800215da1f4f9f6bea83f59ad2ba28c66b8bee2d69c80bdbd4d9f11

  • SHA512

    121f9f0a1b36d25a07b86c7a573ebac088826514468959bab878a1ed02a865c24a7a051a840a2a2c096d67ff79ddc1681a07f08a2d0407bb09809e9e50818f9d

  • SSDEEP

    6144:MmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgE:lSmLAuEY71fviagATFmebVQDcYcY

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

C2

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes
  • reg_key

    5cd8f17f4086744065eb0992a09e05a2

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 3 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78a9c32a4f8e84a1fac417b3621be3b4.exe
    "C:\Users\Admin\AppData\Local\Temp\78a9c32a4f8e84a1fac417b3621be3b4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 240
      2⤵
      • Program crash
      PID:1620
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2296
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Users\Admin\AppData\Local\Temp\Trojan.exe
          "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3984
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:3576
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 164
      2⤵
      • Program crash
      PID:2340
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1232 -ip 1232
    1⤵
      PID:4112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1232 -ip 1232
      1⤵
        PID:4988

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\test.exe

              Filesize

              78KB

              MD5

              42c5854aa0709d8bf6c28ea82c67b9a5

              SHA1

              124ea473f0572009de85a4a46f361109f4fae7d6

              SHA256

              71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

              SHA512

              c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

            • memory/1232-0-0x0000000000400000-0x00000000004FB000-memory.dmp

              Filesize

              1004KB

            • memory/1232-1-0x0000000000400000-0x00000000004FB000-memory.dmp

              Filesize

              1004KB

            • memory/1232-25-0x0000000000400000-0x00000000004FB000-memory.dmp

              Filesize

              1004KB

            • memory/1916-9-0x0000000001960000-0x0000000001970000-memory.dmp

              Filesize

              64KB

            • memory/1916-8-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/1916-10-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/1916-20-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/3984-21-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/3984-24-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/3984-22-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-26-0x0000000075470000-0x0000000075A21000-memory.dmp

              Filesize

              5.7MB

            • memory/3984-27-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-28-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-29-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-30-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-31-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-32-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB

            • memory/3984-33-0x0000000000E30000-0x0000000000E40000-memory.dmp

              Filesize

              64KB