Analysis

  • max time kernel
    149s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    03/02/2024, 09:32

General

  • Target

    8bfdedc30182ece284b09591788cc931.exe

  • Size

    402KB

  • MD5

    8bfdedc30182ece284b09591788cc931

  • SHA1

    4ff3a3ad179c7bb9aa91493beb6ed30882fe8e46

  • SHA256

    00b99ceddb783a0fe3cac7aa2faa936ab54c5d6ff42280aaa307b04175c97103

  • SHA512

    92c584c203e66e95352109666f538ab4252543331dd9bda2463e4caec4e08b713796ca598babdd4260f43451f99fd6d1ee008bbbd0e6cf9d1edce1d6d2b4af15

  • SSDEEP

    6144:JmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgW:eSmLAuEY71fviagATFmebVQDcYc6

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
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 2 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).

  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8bfdedc30182ece284b09591788cc931.exe
    "C:\Users\Admin\AppData\Local\Temp\8bfdedc30182ece284b09591788cc931.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2416
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2668
        • 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:2932
  • C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
    1⤵
    • Modifies Windows Firewall
    PID:2800

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/1956-0-0x0000000000400000-0x00000000004FA000-memory.dmp

          Filesize

          1000KB

        • memory/1956-18-0x0000000000400000-0x00000000004FA000-memory.dmp

          Filesize

          1000KB

        • memory/2668-5-0x0000000074460000-0x0000000074A0B000-memory.dmp

          Filesize

          5.7MB

        • memory/2668-6-0x0000000001D60000-0x0000000001DA0000-memory.dmp

          Filesize

          256KB

        • memory/2668-7-0x0000000074460000-0x0000000074A0B000-memory.dmp

          Filesize

          5.7MB

        • memory/2668-15-0x0000000074460000-0x0000000074A0B000-memory.dmp

          Filesize

          5.7MB

        • memory/2932-16-0x0000000074460000-0x0000000074A0B000-memory.dmp

          Filesize

          5.7MB

        • memory/2932-17-0x0000000000B40000-0x0000000000B80000-memory.dmp

          Filesize

          256KB

        • memory/2932-21-0x0000000000B40000-0x0000000000B80000-memory.dmp

          Filesize

          256KB

        • memory/2932-20-0x0000000074460000-0x0000000074A0B000-memory.dmp

          Filesize

          5.7MB