Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/04/2025, 00:29

General

  • Target

    0x0007000000019273-20.exe

  • Size

    658KB

  • MD5

    3178fcad2d2c2f3c0f4f70aecfb18db7

  • SHA1

    0ecad6522214f9bef4dd8f2f8eb927827bc4971c

  • SHA256

    dd8650f0e484ba0ea4775ccce3a9644bba747ee92f1b534628525c7ceedc69f9

  • SHA512

    57148c860850344b1086c8765c083862d57d99119914e218aca4c8e80dc9cbe48d206b6aefaea9ad5cda58a459ff5888f1bc82f6fabacd2aa81f52818cef4985

  • SSDEEP

    12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:KZ1xuVVjfFoynPaVBUR8f+kN10EBP

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-7X99PTF

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    DNgeskLTppzX

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    System32.dll

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 17 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 24 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0x0007000000019273-20.exe
    "C:\Users\Admin\AppData\Local\Temp\0x0007000000019273-20.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\0x0007000000019273-20.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\0x0007000000019273-20.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:5084
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2512
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3868
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4492
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2400
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1572
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3500
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3612
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4372
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2208
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    1⤵
      PID:3632
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5968
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      1⤵
        PID:6120
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:6088
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        1⤵
          PID:1164
          • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
            C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
            2⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2540
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          1⤵
            PID:3308
            • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
              C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
              2⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:2000
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
            1⤵
              PID:2748
              • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                2⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                PID:1856
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
              1⤵
                PID:3120
                • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                  C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                  2⤵
                  • Executes dropped EXE
                  • System Location Discovery: System Language Discovery
                  PID:4408
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                1⤵
                  PID:3260
                  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                    C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                    2⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    PID:860
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                  1⤵
                    PID:5916
                    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                      2⤵
                      • Executes dropped EXE
                      • System Location Discovery: System Language Discovery
                      PID:4544
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                    1⤵
                      PID:3688
                      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                        C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                        2⤵
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        PID:2348
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                      1⤵
                        PID:2932
                        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                          C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                          2⤵
                          • Executes dropped EXE
                          • System Location Discovery: System Language Discovery
                          PID:4360
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                        1⤵
                          PID:3416
                          • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                            C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                            2⤵
                            • Executes dropped EXE
                            • System Location Discovery: System Language Discovery
                            PID:1156
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                          1⤵
                            PID:4456
                            • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                              C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
                              2⤵
                              • Executes dropped EXE
                              • System Location Discovery: System Language Discovery
                              PID:3252

                          Network

                          MITRE ATT&CK Enterprise v16

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

                            Filesize

                            658KB

                            MD5

                            3178fcad2d2c2f3c0f4f70aecfb18db7

                            SHA1

                            0ecad6522214f9bef4dd8f2f8eb927827bc4971c

                            SHA256

                            dd8650f0e484ba0ea4775ccce3a9644bba747ee92f1b534628525c7ceedc69f9

                            SHA512

                            57148c860850344b1086c8765c083862d57d99119914e218aca4c8e80dc9cbe48d206b6aefaea9ad5cda58a459ff5888f1bc82f6fabacd2aa81f52818cef4985

                          • memory/860-47-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1156-58-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-6-0x00000000007D0000-0x00000000007D1000-memory.dmp

                            Filesize

                            4KB

                          • memory/1572-42-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-37-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-34-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-15-0x00000000007D0000-0x00000000007D1000-memory.dmp

                            Filesize

                            4KB

                          • memory/1572-29-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-18-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1572-26-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/1856-39-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/2000-36-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/2208-20-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/2348-53-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/2540-33-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/3252-61-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/3500-7-0x0000000001000000-0x0000000001001000-memory.dmp

                            Filesize

                            4KB

                          • memory/3612-10-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/3868-8-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

                            Filesize

                            4KB

                          • memory/4360-56-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/4372-17-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/4408-44-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/4492-12-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/4544-50-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/5212-13-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/5212-0-0x0000000002800000-0x0000000002801000-memory.dmp

                            Filesize

                            4KB

                          • memory/5968-25-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB

                          • memory/6088-28-0x0000000000400000-0x00000000004B2000-memory.dmp

                            Filesize

                            712KB