Analysis

  • max time kernel
    153s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-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)

  • suricata: ET MALWARE njRAT/Bladabindi Variant (Lime) CnC Checkin

    suricata: ET MALWARE njRAT/Bladabindi Variant (Lime) CnC Checkin

  • Executes dropped EXE 1 IoCs
  • Drops startup file 2 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 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
    "C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3716
    • C:\Windows\SysWOW64\TASKKILL.exe
      TASKKILL /F /IM wscript.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:504
    • C:\Windows\SysWOW64\TASKKILL.exe
      TASKKILL /F /IM cmd.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1284
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /tn NYAN /F
      2⤵
        PID:1368
      • 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:1004
      • 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:680
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM wscript.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2560
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM cmd.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1308
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /tn NYAN /F
          3⤵
            PID:3500
          • 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:1868
      • C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
        C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
        1⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1204
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM wscript.exe
          2⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2320
        • C:\Windows\SysWOW64\TASKKILL.exe
          TASKKILL /F /IM cmd.exe
          2⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2316
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /tn NYAN /F
          2⤵
            PID:2472
          • 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:4008
        • C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
          C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
          1⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:400
          • C:\Windows\SysWOW64\TASKKILL.exe
            TASKKILL /F /IM wscript.exe
            2⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1028
          • C:\Windows\SysWOW64\TASKKILL.exe
            TASKKILL /F /IM cmd.exe
            2⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1188
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Delete /tn NYAN /F
            2⤵
              PID:1724
            • 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:668
          • C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
            C:\Users\Admin\AppData\Local\Temp\ad24b1319a3a895d8b83a0deae7eac57.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1248
            • C:\Windows\SysWOW64\TASKKILL.exe
              TASKKILL /F /IM wscript.exe
              2⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1192
            • C:\Windows\SysWOW64\TASKKILL.exe
              TASKKILL /F /IM cmd.exe
              2⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2400

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\ad24b1319a3a895d8b83a0deae7eac57.exe.log

            MD5

            6b062b48db9a8e149e10fefd80ab54ef

            SHA1

            1e72855f88c33b6ddce512b079bbe2e4aa2b6b57

            SHA256

            026518c621aa1e908fd3617fe1d684a6225393659345ad4f9c085fc4f6b3cf43

            SHA512

            b36007e2b0b71247979cdac1b17520cc37065c001464b4c70d642c8a059510d28ed8b57b7e4df59a43d99d69c588c1bab7b3c95c6a75c0ab98317246b56f7832

          • 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

          • memory/400-138-0x00000000010F0000-0x00000000010F1000-memory.dmp

            Filesize

            4KB

          • memory/504-117-0x0000000000000000-mapping.dmp

          • memory/668-140-0x0000000000000000-mapping.dmp

          • memory/680-122-0x0000000000000000-mapping.dmp

          • memory/680-127-0x0000000002F10000-0x0000000002F11000-memory.dmp

            Filesize

            4KB

          • memory/1004-121-0x0000000000000000-mapping.dmp

          • memory/1028-136-0x0000000000000000-mapping.dmp

          • memory/1188-137-0x0000000000000000-mapping.dmp

          • memory/1192-141-0x0000000000000000-mapping.dmp

          • memory/1204-131-0x0000000000650000-0x00000000006FE000-memory.dmp

            Filesize

            696KB

          • memory/1248-143-0x0000000000B10000-0x0000000000B11000-memory.dmp

            Filesize

            4KB

          • memory/1284-118-0x0000000000000000-mapping.dmp

          • memory/1308-126-0x0000000000000000-mapping.dmp

          • memory/1368-120-0x0000000000000000-mapping.dmp

          • memory/1724-139-0x0000000000000000-mapping.dmp

          • memory/1868-133-0x0000000000000000-mapping.dmp

          • memory/2316-130-0x0000000000000000-mapping.dmp

          • memory/2320-129-0x0000000000000000-mapping.dmp

          • memory/2400-142-0x0000000000000000-mapping.dmp

          • memory/2472-134-0x0000000000000000-mapping.dmp

          • memory/2560-125-0x0000000000000000-mapping.dmp

          • memory/3500-132-0x0000000000000000-mapping.dmp

          • memory/3716-119-0x0000000002710000-0x0000000002711000-memory.dmp

            Filesize

            4KB

          • memory/4008-135-0x0000000000000000-mapping.dmp