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Resubmissions

18/11/2020, 14:18

201118-dj27sn3f52 10

18/11/2020, 13:42

201118-1arz86e7w6 10

18/11/2020, 13:38

201118-n8jh228ctn 10

Analysis

  • max time kernel
    63s
  • max time network
    75s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    18/11/2020, 13:38

General

  • Target

    HYDRA.bin.exe

Malware Config

Extracted

Family

smokeloader

Version

2017

C2

http://92.53.105.14/

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
  • Executes dropped EXE 7 IoCs
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HYDRA.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\HYDRA.bin.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4040
    • C:\Users\Admin\AppData\Roaming\yaya.exe
      C:\Users\Admin\AppData\Roaming\yaya.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1212
      • C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe
        "C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3628
        • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\2xaeabdi.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3060
          • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES7ECC.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC7EBB.tmp"
            5⤵
              PID:3160
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe"
            4⤵
              PID:1512
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe"
              4⤵
                PID:1516
          • C:\Users\Admin\AppData\Roaming\va.exe
            C:\Users\Admin\AppData\Roaming\va.exe
            2⤵
            • Executes dropped EXE
            • Drops startup file
            PID:3988
          • C:\Users\Admin\AppData\Roaming\ufx.exe
            C:\Users\Admin\AppData\Roaming\ufx.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1788
            • C:\ProgramData\ucp\usc.exe
              "C:\ProgramData\ucp\usc.exe" /ucp/usc.exe
              3⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2136
              • C:\Windows\SysWOW64\SCHTASKS.exe
                SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
                4⤵
                • Creates scheduled task(s)
                PID:1780
          • C:\Users\Admin\AppData\Roaming\sant.exe
            C:\Users\Admin\AppData\Roaming\sant.exe
            2⤵
            • Executes dropped EXE
            • Maps connected drives based on registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2032
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              3⤵
              • Adds Run key to start application
              PID:2212
          • C:\Users\Admin\AppData\Roaming\power.exe
            C:\Users\Admin\AppData\Roaming\power.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2160
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3752
        • \??\c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s seclogon
          1⤵
          • Suspicious use of NtCreateUserProcessOtherParentProcess
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3580

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/2212-33-0x0000000000AF0000-0x0000000000F2F000-memory.dmp

          Filesize

          4.2MB

        • memory/2212-32-0x0000000000AF0000-0x0000000000F2F000-memory.dmp

          Filesize

          4.2MB

        • memory/3628-21-0x00007FFFF3990000-0x00007FFFF4330000-memory.dmp

          Filesize

          9.6MB

        • memory/3752-35-0x0000000071540000-0x0000000071C2E000-memory.dmp

          Filesize

          6.9MB

        • memory/3752-36-0x0000000006E30000-0x0000000006E31000-memory.dmp

          Filesize

          4KB

        • memory/3752-37-0x0000000007620000-0x0000000007621000-memory.dmp

          Filesize

          4KB

        • memory/3752-38-0x0000000007510000-0x0000000007511000-memory.dmp

          Filesize

          4KB

        • memory/3752-39-0x00000000075B0000-0x00000000075B1000-memory.dmp

          Filesize

          4KB

        • memory/3752-40-0x0000000007E30000-0x0000000007E31000-memory.dmp

          Filesize

          4KB

        • memory/3752-41-0x0000000007FD0000-0x0000000007FD1000-memory.dmp

          Filesize

          4KB

        • memory/3752-42-0x0000000007F40000-0x0000000007F41000-memory.dmp

          Filesize

          4KB

        • memory/3752-43-0x0000000008320000-0x0000000008321000-memory.dmp

          Filesize

          4KB

        • memory/3752-44-0x0000000008850000-0x0000000008851000-memory.dmp

          Filesize

          4KB

        • memory/3752-45-0x00000000093E0000-0x00000000093E1000-memory.dmp

          Filesize

          4KB