Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2022, 16:21

General

  • Target

    36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe

  • Size

    818KB

  • MD5

    a2325f08d58dba788f3ab58f89e4a0b0

  • SHA1

    60057894fe68b30e15ae4b14740db897012f9a69

  • SHA256

    36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3

  • SHA512

    bad9a11c6021cf7d93b251d9321edcb57a2c007e45ef3a042b7a34c360dbc0e0e4bf48601612890101925f030b3a993da6c5b1848cb090e114b514d4e61b5c3d

  • SSDEEP

    12288:ZphltQSgqI39cn/vkFQbYbv7Q1nLpsEiyrqx518NCXUo1z16Sl3C5FiduwlU:GqIOnkFQekLpsZyrI18N4Ff6Sl3mIuL

Malware Config

Extracted

Family

darkcomet

Botnet

Slave

C2

ghost1997.no-ip.biz:1337

Mutex

DC_MUTEX-J3WWY9F

Attributes
  • gencode

    tdtxd3ezaYVU

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Windows security bypass 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe
    "C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4280
    • C:\Windows\SysWOW64\cmd.exe
      /c net stop MpsSvc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Windows\SysWOW64\net.exe
        net stop MpsSvc
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2400
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop MpsSvc
          4⤵
            PID:4428
      • C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe
        C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe
        2⤵
        • Windows security bypass
        • Executes dropped EXE
        • Checks computer location settings
        • Windows security modification
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2236
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe" +s +h
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3708
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe" +s +h
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:3784
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3124
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:3856
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          3⤵
            PID:116

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3.exe

              Filesize

              818KB

              MD5

              a2325f08d58dba788f3ab58f89e4a0b0

              SHA1

              60057894fe68b30e15ae4b14740db897012f9a69

              SHA256

              36f8422a4c2d465ac8adced544708603ae5fcf680fe15af563a4eb45b287c0c3

              SHA512

              bad9a11c6021cf7d93b251d9321edcb57a2c007e45ef3a042b7a34c360dbc0e0e4bf48601612890101925f030b3a993da6c5b1848cb090e114b514d4e61b5c3d

            • memory/2236-137-0x0000000000400000-0x00000000004BA000-memory.dmp

              Filesize

              744KB

            • memory/2236-135-0x0000000000400000-0x00000000004BA000-memory.dmp

              Filesize

              744KB

            • memory/2236-138-0x0000000000400000-0x00000000004BA000-memory.dmp

              Filesize

              744KB

            • memory/2236-141-0x0000000000400000-0x00000000004BA000-memory.dmp

              Filesize

              744KB

            • memory/2236-147-0x0000000000400000-0x00000000004BA000-memory.dmp

              Filesize

              744KB

            • memory/4280-132-0x00000000022E0000-0x00000000022E4000-memory.dmp

              Filesize

              16KB