Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-02-2021 09:19

General

  • Target

    1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22.exe

  • Size

    594KB

  • MD5

    6815e92e3b69abb83257aff53ccf411b

  • SHA1

    dd588b78d08d8eea3f553fe1cec692ac2340111b

  • SHA256

    1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

  • SHA512

    1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Suspicious use of NtCreateProcessExOtherParentProcess 2 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 4 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22.exe
    "C:\Users\Admin\AppData\Local\Temp\1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:496
    • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe
      "C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2972
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:3244
        • C:\Users\Admin\Documents\skypes.exe
          "C:\Users\Admin\Documents\skypes.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1180
          • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe
            "C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2328
            • C:\Windows\SysWOW64\notepad.exe
              notepad
              5⤵
                PID:1828
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1068
              4⤵
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3836
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1080
              4⤵
              • Suspicious use of NtCreateProcessExOtherParentProcess
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3344
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 496 -s 1080
          2⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:212
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 496 -s 1084
          2⤵
          • Suspicious use of NtCreateProcessExOtherParentProcess
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2812

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • C:\Users\Admin\AppData\Local\Temp\vY5tyhPjQ9k3sUGd\svhostis.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • C:\Users\Admin\Documents\skypes.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • C:\Users\Admin\Documents\skypes.exe

        MD5

        6815e92e3b69abb83257aff53ccf411b

        SHA1

        dd588b78d08d8eea3f553fe1cec692ac2340111b

        SHA256

        1810092b7599bad7adea10aeaf4df0c2af29fc85c0904662bab674f231752e22

        SHA512

        1227bf5619eb7ae56ca4382db764cb55db5a77c3f549cfc478ddee59e35f24408848e737f005209ffa289414a2eb6f5128bd002c95448b103485e33f5bb054a1

      • memory/212-7-0x0000000004FD0000-0x0000000004FD1000-memory.dmp

        Filesize

        4KB

      • memory/496-2-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

        Filesize

        4KB

      • memory/1180-16-0x0000000000000000-mapping.dmp

      • memory/1180-19-0x0000000002C30000-0x0000000002C31000-memory.dmp

        Filesize

        4KB

      • memory/1828-25-0x0000000000000000-mapping.dmp

      • memory/1828-26-0x00000000029E0000-0x00000000029E1000-memory.dmp

        Filesize

        4KB

      • memory/2328-28-0x0000000000400000-0x00000000004B7000-memory.dmp

        Filesize

        732KB

      • memory/2328-29-0x0000000000D50000-0x0000000000D51000-memory.dmp

        Filesize

        4KB

      • memory/2328-21-0x00000000004B57C0-mapping.dmp

      • memory/2812-13-0x00000000041B0000-0x00000000041B1000-memory.dmp

        Filesize

        4KB

      • memory/2812-14-0x00000000041B0000-0x00000000041B1000-memory.dmp

        Filesize

        4KB

      • memory/2972-8-0x0000000000400000-0x00000000004B7000-memory.dmp

        Filesize

        732KB

      • memory/2972-9-0x0000000001690000-0x0000000001691000-memory.dmp

        Filesize

        4KB

      • memory/2972-4-0x00000000004B57C0-mapping.dmp

      • memory/2972-3-0x0000000000400000-0x00000000004B7000-memory.dmp

        Filesize

        732KB

      • memory/3244-11-0x00000000001E0000-0x00000000001E1000-memory.dmp

        Filesize

        4KB

      • memory/3244-10-0x0000000000000000-mapping.dmp

      • memory/3344-27-0x0000000004B00000-0x0000000004B01000-memory.dmp

        Filesize

        4KB

      • memory/3836-23-0x00000000044B0000-0x00000000044B1000-memory.dmp

        Filesize

        4KB