Resubmissions

12-11-2021 18:04

211112-wnzb8aahhm 10

19-11-2020 10:08

201119-rhwlt38jrx 10

18-11-2020 17:26

201118-htd4fq29va 10

Analysis

  • max time kernel
    1802s
  • max time network
    1811s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    18-11-2020 17:26

General

  • Target

    HYDRA.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 10 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 4 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 8 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HYDRA.exe
    "C:\Users\Admin\AppData\Local\Temp\HYDRA.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Users\Admin\AppData\Roaming\yaya.exe
      C:\Users\Admin\AppData\Roaming\yaya.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:752
      • 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:3816
        • 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\5egucrto.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3552
          • 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\RES2ADA.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC2AD9.tmp"
            5⤵
              PID:2240
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe"
            4⤵
              PID:3808
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe"
              4⤵
                PID:3800
          • C:\Users\Admin\AppData\Roaming\va.exe
            C:\Users\Admin\AppData\Roaming\va.exe
            2⤵
            • Executes dropped EXE
            • Drops startup file
            PID:3564
          • C:\Users\Admin\AppData\Roaming\ufx.exe
            C:\Users\Admin\AppData\Roaming\ufx.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1784
            • 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:3728
              • 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:3996
          • 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:3112
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              3⤵
              • Adds Run key to start application
              PID:3012
          • C:\Users\Admin\AppData\Roaming\power.exe
            C:\Users\Admin\AppData\Roaming\power.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3116
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3988
        • \??\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:1612
        • C:\ProgramData\ucp\usc.exe
          C:\ProgramData\ucp\usc.exe
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1284
          • C:\Windows\SysWOW64\SCHTASKS.exe
            SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
            2⤵
            • Creates scheduled task(s)
            PID:3852
        • C:\ProgramData\ucp\usc.exe
          C:\ProgramData\ucp\usc.exe
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3732
          • C:\Windows\SysWOW64\SCHTASKS.exe
            SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
            2⤵
            • Creates scheduled task(s)
            PID:2348
        • C:\ProgramData\ucp\usc.exe
          C:\ProgramData\ucp\usc.exe
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3008
          • C:\Windows\SysWOW64\SCHTASKS.exe
            SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
            2⤵
            • Creates scheduled task(s)
            PID:1972

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/752-18-0x0000000002560000-0x0000000002561000-memory.dmp

          Filesize

          4KB

        • memory/3012-26-0x00000000012E0000-0x000000000171F000-memory.dmp

          Filesize

          4.2MB

        • memory/3012-25-0x00000000012E0000-0x000000000171F000-memory.dmp

          Filesize

          4.2MB

        • memory/3816-23-0x00007FFB89F70000-0x00007FFB8A910000-memory.dmp

          Filesize

          9.6MB

        • memory/3988-40-0x00000000073A0000-0x00000000073A1000-memory.dmp

          Filesize

          4KB

        • memory/3988-41-0x0000000007C30000-0x0000000007C31000-memory.dmp

          Filesize

          4KB

        • memory/3988-42-0x0000000007CA0000-0x0000000007CA1000-memory.dmp

          Filesize

          4KB

        • memory/3988-43-0x0000000007C00000-0x0000000007C01000-memory.dmp

          Filesize

          4KB

        • memory/3988-44-0x0000000008130000-0x0000000008131000-memory.dmp

          Filesize

          4KB

        • memory/3988-45-0x00000000085C0000-0x00000000085C1000-memory.dmp

          Filesize

          4KB

        • memory/3988-46-0x0000000009240000-0x0000000009241000-memory.dmp

          Filesize

          4KB

        • memory/3988-39-0x0000000007B90000-0x0000000007B91000-memory.dmp

          Filesize

          4KB

        • memory/3988-38-0x0000000007460000-0x0000000007461000-memory.dmp

          Filesize

          4KB

        • memory/3988-37-0x0000000006C90000-0x0000000006C91000-memory.dmp

          Filesize

          4KB

        • memory/3988-36-0x0000000071BB0000-0x000000007229E000-memory.dmp

          Filesize

          6.9MB