Analysis

  • max time kernel
    150s
  • max time network
    122s
  • 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, 21:09

General

  • Target

    78641128d1339b6920de0b0c87792506.exe

  • Size

    402KB

  • MD5

    78641128d1339b6920de0b0c87792506

  • SHA1

    d7df45b7383f80d12f65f010f939e5d66bb704d5

  • SHA256

    d5e37030c7b9015b254892672789bc573aab50af39b9b4b9650ce506a74bdc4c

  • SHA512

    92f05bb255c64da66fe0157c7ad2112bc84964fc936fee9dde67f8f083d990ba7b8b0d795e0df86275dd98c4954ca63ec4cbd09433e1f01d802c43e4dd7b29d9

  • SSDEEP

    6144:hmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDg2:mSmLAuEY71fviagATFmebVQDcYca

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 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).

  • Program crash 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78641128d1339b6920de0b0c87792506.exe
    "C:\Users\Admin\AppData\Local\Temp\78641128d1339b6920de0b0c87792506.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 256
      2⤵
      • Program crash
      PID:1616
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4836
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3436
        • 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:32
          • 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:4964
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 164
      2⤵
      • Program crash
      PID:4808
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1956 -ip 1956
    1⤵
      PID:4084
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1956 -ip 1956
      1⤵
        PID:1636

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              78KB

              MD5

              42c5854aa0709d8bf6c28ea82c67b9a5

              SHA1

              124ea473f0572009de85a4a46f361109f4fae7d6

              SHA256

              71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

              SHA512

              c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

            • memory/32-18-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB

            • memory/32-19-0x0000000000DC0000-0x0000000000DD0000-memory.dmp

              Filesize

              64KB

            • memory/32-20-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB

            • memory/32-23-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB

            • memory/32-24-0x0000000000DC0000-0x0000000000DD0000-memory.dmp

              Filesize

              64KB

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

              Filesize

              1000KB

            • memory/1956-22-0x0000000000400000-0x00000000004FA000-memory.dmp

              Filesize

              1000KB

            • memory/3436-5-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB

            • memory/3436-6-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB

            • memory/3436-7-0x0000000001790000-0x00000000017A0000-memory.dmp

              Filesize

              64KB

            • memory/3436-17-0x0000000074920000-0x0000000074ED1000-memory.dmp

              Filesize

              5.7MB