Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    16-12-2021 12:22

General

  • Target

    ad24b1319a3a895d8b83a0deae7eac57.exe

  • Size

    78KB

  • MD5

    ad24b1319a3a895d8b83a0deae7eac57

  • SHA1

    81f2908cbb43a41fac8208a9805c06521331f512

  • SHA256

    63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

  • SHA512

    b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

Malware Config

Extracted

Family

njrat

Version

0.7.3

Botnet

Lime

C2

daudas.ddns.net:7075

Mutex

Client.exe

Attributes
  • reg_key

    Client.exe

  • splitter

    12345

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

  • Executes dropped EXE 3 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Kills process with taskkill 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
    "C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\TASKKILL.exe
      TASKKILL /F /IM wscript.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1396
    • C:\Windows\SysWOW64\TASKKILL.exe
      TASKKILL /F /IM cmd.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:320
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /tn NYAN /F
      2⤵
        PID:792
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn NYAN /tr "C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe" /sc minute /mo 1
        2⤵
        • Creates scheduled task(s)
        PID:1952
      • C:\Users\Admin\AppData\Local\Temp\Client.exe
        "C:\Users\Admin\AppData\Local\Temp\Client.exe"
        2⤵
        • Executes dropped EXE
        • Drops startup file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1992
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM wscript.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1752
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM cmd.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1848
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /tn NYAN /F
          3⤵
            PID:1956
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn NYAN /tr "C:\Users\Admin\AppData\Local\Temp\Client.exe" /sc minute /mo 1
            3⤵
            • Creates scheduled task(s)
            PID:1736
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {34F8959E-96B2-4392-9D42-A164E6C349C6} S-1-5-21-2329389628-4064185017-3901522362-1000:QSKGHMYQ\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:656
        • C:\Users\Admin\AppData\Local\Temp\Client.exe
          C:\Users\Admin\AppData\Local\Temp\Client.exe
          2⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1468
          • C:\Windows\SysWOW64\TASKKILL.exe
            TASKKILL /F /IM wscript.exe
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:852
          • C:\Windows\SysWOW64\TASKKILL.exe
            TASKKILL /F /IM cmd.exe
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:472
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Delete /tn NYAN /F
            3⤵
              PID:792
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn NYAN /tr "C:\Users\Admin\AppData\Local\Temp\Client.exe" /sc minute /mo 1
              3⤵
              • Creates scheduled task(s)
              PID:1548
          • C:\Users\Admin\AppData\Local\Temp\Client.exe
            C:\Users\Admin\AppData\Local\Temp\Client.exe
            2⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1632
            • C:\Windows\SysWOW64\TASKKILL.exe
              TASKKILL /F /IM wscript.exe
              3⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:528
            • C:\Windows\SysWOW64\TASKKILL.exe
              TASKKILL /F /IM cmd.exe
              3⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1976
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Delete /tn NYAN /F
              3⤵
                PID:1996
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /tn NYAN /tr "C:\Users\Admin\AppData\Local\Temp\Client.exe" /sc minute /mo 1
                3⤵
                • Creates scheduled task(s)
                PID:1748

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            MD5

            ad24b1319a3a895d8b83a0deae7eac57

            SHA1

            81f2908cbb43a41fac8208a9805c06521331f512

            SHA256

            63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

            SHA512

            b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

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

            MD5

            ad24b1319a3a895d8b83a0deae7eac57

            SHA1

            81f2908cbb43a41fac8208a9805c06521331f512

            SHA256

            63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

            SHA512

            b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

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

            MD5

            ad24b1319a3a895d8b83a0deae7eac57

            SHA1

            81f2908cbb43a41fac8208a9805c06521331f512

            SHA256

            63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

            SHA512

            b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

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

            MD5

            ad24b1319a3a895d8b83a0deae7eac57

            SHA1

            81f2908cbb43a41fac8208a9805c06521331f512

            SHA256

            63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

            SHA512

            b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

          • \Users\Admin\AppData\Local\Temp\Client.exe

            MD5

            ad24b1319a3a895d8b83a0deae7eac57

            SHA1

            81f2908cbb43a41fac8208a9805c06521331f512

            SHA256

            63d4943fbc9e572db52df96729327f29c0342f7b7f192d823dc7a322116f033d

            SHA512

            b061a04845024ed69a1da828f2c85f9f47ff8a5214db47231645db4eef639d18b7c1e6d97e0751ee977e84eca4e4561a8963f1d8468ac424f55a2844e4719231

          • memory/320-58-0x0000000000000000-mapping.dmp

          • memory/472-75-0x0000000000000000-mapping.dmp

          • memory/528-82-0x0000000000000000-mapping.dmp

          • memory/792-59-0x0000000000000000-mapping.dmp

          • memory/792-77-0x0000000000000000-mapping.dmp

          • memory/852-74-0x0000000000000000-mapping.dmp

          • memory/1396-57-0x0000000000000000-mapping.dmp

          • memory/1468-76-0x0000000000A50000-0x0000000000A51000-memory.dmp

            Filesize

            4KB

          • memory/1468-71-0x0000000000000000-mapping.dmp

          • memory/1548-78-0x0000000000000000-mapping.dmp

          • memory/1632-84-0x0000000000700000-0x0000000000701000-memory.dmp

            Filesize

            4KB

          • memory/1632-79-0x0000000000000000-mapping.dmp

          • memory/1676-55-0x0000000075021000-0x0000000075023000-memory.dmp

            Filesize

            8KB

          • memory/1676-56-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

            Filesize

            4KB

          • memory/1736-70-0x0000000000000000-mapping.dmp

          • memory/1748-86-0x0000000000000000-mapping.dmp

          • memory/1752-66-0x0000000000000000-mapping.dmp

          • memory/1848-67-0x0000000000000000-mapping.dmp

          • memory/1952-60-0x0000000000000000-mapping.dmp

          • memory/1956-69-0x0000000000000000-mapping.dmp

          • memory/1976-83-0x0000000000000000-mapping.dmp

          • memory/1992-68-0x0000000000A70000-0x0000000000A71000-memory.dmp

            Filesize

            4KB

          • memory/1992-62-0x0000000000000000-mapping.dmp

          • memory/1996-85-0x0000000000000000-mapping.dmp