Analysis

  • max time kernel
    173s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/03/2024, 18:09

General

  • Target
    d977bd481b7b461d62344d9157872484.exe
  • Size 660KB
  • Sample240320-wrfpaafa33
  • SHA256 a0bc4147437bc99be6e16cabaa5c8c9ba7aaf41aa0f44296ba936e45e2ce2290
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • ID1

C2
  • 79.203.125.20:1604

Mutex
  • DC_MUTEX-QGJ2J01

Attributes
  • InstallPath

    MSDX\crwndx.exe

  • gencode

    HtWEjgJRh8BT

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    crwndx

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 25 IoCs
  • Checks computer location settings 2 TTPs 24 IoCs

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

  • Executes dropped EXE 24 IoCs
  • Adds Run key to start application 2 TTPs 25 IoCs
  • Drops file in System32 directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d977bd481b7b461d62344d9157872484.exe
    "C:\Users\Admin\AppData\Local\Temp\d977bd481b7b461d62344d9157872484.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Windows\SysWOW64\MSDX\crwndx.exe
      "C:\Windows\system32\MSDX\crwndx.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:692
      • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
        "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Checks computer location settings
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1588
        • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
          "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:3096
          • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
            "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
            5⤵
            • Modifies WinLogon for persistence
            • Checks computer location settings
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious use of WriteProcessMemory
            PID:700
            • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
              "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
              6⤵
              • Modifies WinLogon for persistence
              • Checks computer location settings
              • Executes dropped EXE
              • Adds Run key to start application
              • Drops file in System32 directory
              • Suspicious use of WriteProcessMemory
              PID:3772
              • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                7⤵
                • Modifies WinLogon for persistence
                • Checks computer location settings
                • Executes dropped EXE
                • Adds Run key to start application
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:4496
                • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                  "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                  8⤵
                  • Modifies WinLogon for persistence
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Drops file in System32 directory
                  • Suspicious use of WriteProcessMemory
                  PID:3812
                  • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                    "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                    9⤵
                    • Modifies WinLogon for persistence
                    • Checks computer location settings
                    • Executes dropped EXE
                    • Adds Run key to start application
                    • Drops file in System32 directory
                    • Suspicious use of WriteProcessMemory
                    PID:3292
                    • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                      "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                      10⤵
                      • Modifies WinLogon for persistence
                      • Checks computer location settings
                      • Executes dropped EXE
                      • Adds Run key to start application
                      • Drops file in System32 directory
                      • Suspicious use of WriteProcessMemory
                      PID:1672
                      • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                        "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                        11⤵
                        • Modifies WinLogon for persistence
                        • Checks computer location settings
                        • Executes dropped EXE
                        • Adds Run key to start application
                        • Drops file in System32 directory
                        • Suspicious use of WriteProcessMemory
                        PID:1748
                        • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                          "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                          12⤵
                          • Modifies WinLogon for persistence
                          • Checks computer location settings
                          • Executes dropped EXE
                          • Adds Run key to start application
                          • Drops file in System32 directory
                          • Suspicious use of WriteProcessMemory
                          PID:3336
                          • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                            "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                            13⤵
                            • Modifies WinLogon for persistence
                            • Checks computer location settings
                            • Executes dropped EXE
                            • Adds Run key to start application
                            • Drops file in System32 directory
                            • Suspicious use of WriteProcessMemory
                            PID:4516
                            • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                              "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                              14⤵
                              • Modifies WinLogon for persistence
                              • Checks computer location settings
                              • Executes dropped EXE
                              • Adds Run key to start application
                              • Drops file in System32 directory
                              • Suspicious use of WriteProcessMemory
                              PID:4116
                              • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                15⤵
                                • Modifies WinLogon for persistence
                                • Checks computer location settings
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Drops file in System32 directory
                                • Suspicious use of WriteProcessMemory
                                PID:1404
                                • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                                  "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                                  16⤵
                                  • Modifies WinLogon for persistence
                                  • Checks computer location settings
                                  • Executes dropped EXE
                                  • Adds Run key to start application
                                  • Drops file in System32 directory
                                  • Suspicious use of WriteProcessMemory
                                  PID:2512
                                  • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                    "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                    17⤵
                                    • Modifies WinLogon for persistence
                                    • Checks computer location settings
                                    • Executes dropped EXE
                                    • Adds Run key to start application
                                    • Drops file in System32 directory
                                    • Suspicious use of WriteProcessMemory
                                    PID:4676
                                    • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                                      "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                                      18⤵
                                      • Modifies WinLogon for persistence
                                      • Checks computer location settings
                                      • Executes dropped EXE
                                      • Adds Run key to start application
                                      • Drops file in System32 directory
                                      • Suspicious use of WriteProcessMemory
                                      PID:4188
                                      • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                        "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                        19⤵
                                        • Modifies WinLogon for persistence
                                        • Checks computer location settings
                                        • Executes dropped EXE
                                        • Adds Run key to start application
                                        • Drops file in System32 directory
                                        • Suspicious use of WriteProcessMemory
                                        PID:4824
                                        • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                                          "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                                          20⤵
                                          • Modifies WinLogon for persistence
                                          • Checks computer location settings
                                          • Executes dropped EXE
                                          • Adds Run key to start application
                                          • Drops file in System32 directory
                                          • Suspicious use of WriteProcessMemory
                                          PID:2612
                                          • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                            "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                            21⤵
                                            • Modifies WinLogon for persistence
                                            • Checks computer location settings
                                            • Executes dropped EXE
                                            • Adds Run key to start application
                                            • Drops file in System32 directory
                                            • Suspicious use of WriteProcessMemory
                                            PID:4948
                                            • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                                              "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                                              22⤵
                                              • Modifies WinLogon for persistence
                                              • Checks computer location settings
                                              • Executes dropped EXE
                                              • Adds Run key to start application
                                              • Drops file in System32 directory
                                              • Suspicious use of WriteProcessMemory
                                              PID:1256
                                              • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                                "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                                23⤵
                                                • Modifies WinLogon for persistence
                                                • Checks computer location settings
                                                • Executes dropped EXE
                                                • Adds Run key to start application
                                                • Drops file in System32 directory
                                                PID:3092
                                                • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe
                                                  "C:\Windows\system32\MSDX\HtWEjgJRh8BT\HtWEjgJRh8BT\crwndx.exe"
                                                  24⤵
                                                  • Modifies WinLogon for persistence
                                                  • Checks computer location settings
                                                  • Executes dropped EXE
                                                  • Adds Run key to start application
                                                  • Drops file in System32 directory
                                                  PID:1776
                                                  • C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
                                                    "C:\Windows\system32\MSDX\HtWEjgJRh8BT\crwndx.exe"
                                                    25⤵
                                                    • Modifies WinLogon for persistence
                                                    • Executes dropped EXE
                                                    • Adds Run key to start application
                                                    • Drops file in System32 directory
                                                    PID:2240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        crwndx.exe

        • Path C:\Windows\SysWOW64\MSDX\HtWEjgJRh8BT\crwndx.exe
        • Size 381KB
        • SHA256 84b02dace407456f685026ff5447d0cf59edffd3f884044d1d6917fdbfb814da
        • MD5 SHA1 SHA512 SSDEEP

        crwndx.exe

        • Path C:\Windows\SysWOW64\MSDX\crwndx.exe
        • Size 660KB
        • SHA256 a0bc4147437bc99be6e16cabaa5c8c9ba7aaf41aa0f44296ba936e45e2ce2290
        • MD5 SHA1 SHA512 SSDEEP

        memory/692-14-0x00000000007E0000-0x00000000007E1000-memory.dmp

        memory/692-27-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/700-55-0x00000000021D0000-0x00000000021D1000-memory.dmp

        memory/700-68-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1256-251-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1256-238-0x00000000023C0000-0x00000000023C1000-memory.dmp

        memory/1404-162-0x0000000000670000-0x0000000000671000-memory.dmp

        memory/1404-175-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1588-40-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1588-28-0x0000000000770000-0x0000000000771000-memory.dmp

        memory/1672-116-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1672-103-0x00000000021C0000-0x00000000021C1000-memory.dmp

        memory/1748-130-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1748-117-0x00000000007C0000-0x00000000007C1000-memory.dmp

        memory/1776-279-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/1776-266-0x0000000000780000-0x0000000000781000-memory.dmp

        memory/2240-280-0x0000000002120000-0x0000000002121000-memory.dmp

        memory/2512-176-0x00000000022B0000-0x00000000022B1000-memory.dmp

        memory/2512-189-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/2612-211-0x0000000000560000-0x0000000000561000-memory.dmp

        memory/2612-223-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3092-252-0x0000000002080000-0x0000000002081000-memory.dmp

        memory/3092-265-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3096-54-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3096-42-0x00000000007F0000-0x00000000007F1000-memory.dmp

        memory/3292-102-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3292-90-0x0000000002250000-0x0000000002251000-memory.dmp

        memory/3336-144-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3336-132-0x0000000002120000-0x0000000002121000-memory.dmp

        memory/3772-72-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3772-69-0x00000000022D0000-0x00000000022D1000-memory.dmp

        memory/3812-89-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3812-87-0x0000000002110000-0x0000000002111000-memory.dmp

        memory/3948-13-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/3948-0-0x00000000022C0000-0x00000000022C1000-memory.dmp

        memory/4116-161-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4116-149-0x0000000002120000-0x0000000002121000-memory.dmp

        memory/4188-206-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4188-194-0x00000000006B0000-0x00000000006B1000-memory.dmp

        memory/4496-85-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4496-73-0x0000000002140000-0x0000000002141000-memory.dmp

        memory/4516-148-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4516-145-0x00000000007E0000-0x00000000007E1000-memory.dmp

        memory/4676-193-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4676-191-0x0000000002080000-0x0000000002081000-memory.dmp

        memory/4824-210-0x0000000000400000-0x00000000004B5000-memory.dmp

        memory/4824-207-0x0000000002710000-0x0000000002711000-memory.dmp

        memory/4948-224-0x0000000002070000-0x0000000002071000-memory.dmp

        memory/4948-237-0x0000000000400000-0x00000000004B5000-memory.dmp