Analysis

  • max time kernel
    151s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2022, 16:21

General

  • Target

    175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe

  • Size

    885KB

  • MD5

    914c1a5ce18d5c385aa68eb2f627b683

  • SHA1

    faa8d0acb8ea3bcf164850fa274a3728a473d394

  • SHA256

    175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

  • SHA512

    1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

  • SSDEEP

    12288:IphltQjZMzBLrnl/f1xYPBXfWau3JOq2oth4i73zi/94fuhoAfWl9H5IXMmtVXGI:jW9rn56BXfWauZXD73zi/MjAfiSZM4

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-J5EQEUY

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    YSvPW7HraQLS

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 6 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.

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe
    "C:\Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\cmd.exe
      /c net stop MpsSvc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\SysWOW64\net.exe
        net stop MpsSvc
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:616
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop MpsSvc
          4⤵
            PID:1444
      • C:\Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe
        C:\Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe
        2⤵
        • Modifies WinLogon for persistence
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1824
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
          3⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1580
          • C:\Windows\SysWOW64\cmd.exe
            /c net stop MpsSvc
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:276
            • C:\Windows\SysWOW64\net.exe
              net stop MpsSvc
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:680
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 stop MpsSvc
                6⤵
                  PID:108
            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              4⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:1836

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\system.pif

              Filesize

              885KB

              MD5

              06c91ffe9497a5813c2830e90da86eff

              SHA1

              6efcd6bd0e909b15b1c4f473dd7ef487ca347b36

              SHA256

              e6d8eb7aca95eb052c0d844c725231482626d36330a6b0505cb8cfa48bb4d270

              SHA512

              270f9a867537a221598bb4c89092df4396ba610a884aaab1e65a71031798fe628b70e84283b3ea68bbaaefe552a883224325eddfc75ebdf7de67e6ad1425238b

            • C:\Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • C:\Users\Admin\AppData\Roaming\InstallDir\help.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.pif

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • \Users\Admin\AppData\Local\Temp\175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • \Users\Admin\Documents\MSDCSC\msdcsc.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • \Users\Admin\Documents\MSDCSC\msdcsc.exe

              Filesize

              885KB

              MD5

              914c1a5ce18d5c385aa68eb2f627b683

              SHA1

              faa8d0acb8ea3bcf164850fa274a3728a473d394

              SHA256

              175acb4cbfabe1653e0ab5a30ff9f093e47bbed4a58df2d3e6e6efdd9b51f5df

              SHA512

              1cc0928d68d8d62bb7782eab716daaebfd57a66feb76b0d308e4d7ca895b9731399275ca63fe17a0ca415b786f74021496941ed71eca421bd84e217797fe74be

            • memory/1824-68-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-73-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-79-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-80-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-77-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-67-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-70-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-58-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-57-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-65-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-62-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-60-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1824-113-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1836-114-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1836-115-0x0000000000400000-0x00000000004CA000-memory.dmp

              Filesize

              808KB

            • memory/1996-54-0x0000000075281000-0x0000000075283000-memory.dmp

              Filesize

              8KB

            • memory/1996-71-0x0000000000230000-0x0000000000234000-memory.dmp

              Filesize

              16KB