Analysis

  • max time kernel
    116s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    24/04/2026, 04:29

General

  • Target
    2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample260424-e37tgaey7z
  • SHA256 3e5ba01dfcea4c4d03d59f11125d0b19f48118333a7035006a442abab3c91270
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DcRat

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

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Process spawned unexpected child process 6 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • Detects executables packed with SmartAssembly 7 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 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
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • System policy modification 1 TTPs 6 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\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops file in Drivers directory
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3232
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5380
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\ShellExperiences\WUDFHost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5452
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:416
    • C:\Users\Admin\AppData\Local\Temp\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
      "C:\Users\Admin\AppData\Local\Temp\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 12 /tr "'C:\Windows\ShellExperiences\WUDFHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\Windows\ShellExperiences\WUDFHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 5 /tr "'C:\Windows\ShellExperiences\WUDFHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1796
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 6 /tr "'C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4396
  • C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe
    "C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe"
    1⤵
    • UAC bypass
    • Executes dropped EXE
    • Checks whether UAC is enabled
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:5816
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\c9aac935-97dd-4f9d-9457-255d4e7fe29c.vbs"
      2⤵
        PID:4092
        • C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe
          "C:\Program Files\Reference Assemblies\StartMenuExperienceHost.exe"
          3⤵
            PID:4344
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\d9a61872-ccdd-493c-a0e6-5bb2a821c904.vbs"
          2⤵
            PID:5324
        • C:\Windows\ShellExperiences\WUDFHost.exe
          "C:\Windows\ShellExperiences\WUDFHost.exe"
          1⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:4632

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\2026-04-24_4517db78290f2f9d135f70624676451a_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe.log
              • Size 1KB
              • SHA256 94b7640dce6d228f0d89f1d504c7143397ffa2af6adf910b501d9d51583f463e
              • MD5 SHA1 SHA512 TLSH

              StartMenuExperienceHost.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\StartMenuExperienceHost.exe.log
              • Size 1KB
              • SHA256 fcddb303c289eea896d437f2d18f4774b4c2a5393b59796a9dbdf2975624dccb
              • MD5 SHA1 SHA512 TLSH

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 d62b99fd93e2ace7a1b192298fac39a2f6b163cad958936655625b12b09bac4f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 2720aa2d21cd131fe89ff19de1fb3474af55b9097f281e8bbba4a024c69aeafa
              • MD5 SHA1 SHA512 SSDEEP TLSH

              __PSScriptPolicyTest_scs01frp.zpz.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_scs01frp.zpz.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              c9aac935-97dd-4f9d-9457-255d4e7fe29c.vbs

              • Path C:\Users\Admin\AppData\Local\Temp\c9aac935-97dd-4f9d-9457-255d4e7fe29c.vbs
              • Size 741B
              • SHA256 81fc7889fcf75e314c934a735c713a699b359787ca9233ced111d82934a4cd04
              • MD5 SHA1 SHA512 TLSH

              d9a61872-ccdd-493c-a0e6-5bb2a821c904.vbs

              • Path C:\Users\Admin\AppData\Local\Temp\d9a61872-ccdd-493c-a0e6-5bb2a821c904.vbs
              • Size 517B
              • SHA256 a55f030168e9353ce475ce72ecd145d608854dd019fed438bb91f2b0b4c464cf
              • MD5 SHA1 SHA512 TLSH

              WUDFHost.exe

              • Path C:\Windows\ShellExperiences\WUDFHost.exe
              • Size 2.0MB
              • SHA256 3e5ba01dfcea4c4d03d59f11125d0b19f48118333a7035006a442abab3c91270
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/416-21047-0x0000000070EF0000-0x0000000070F3C000-memory.dmp

              memory/416-21079-0x0000000007410000-0x0000000007424000-memory.dmp

              memory/416-21076-0x0000000007450000-0x00000000074E6000-memory.dmp

              memory/416-21046-0x0000000006FE0000-0x0000000007012000-memory.dmp

              memory/3232-54-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-44-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-6-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-5-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-30-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-32-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-1886-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-42-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-40-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-38-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-36-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-28-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-26-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-35-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-24-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-22-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-62-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-64-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-5231-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-88-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-86-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-124-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-128-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-130-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-126-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-120-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-118-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-116-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-114-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-112-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-110-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-122-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-108-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-106-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-104-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-102-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-100-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-98-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-96-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-94-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-92-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-90-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-84-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-82-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-81-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-77-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-72-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-68-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-78-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-74-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-70-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-58-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-56-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-10-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-52-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-50-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-60-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-48-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-1680-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-1454-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-46-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-8-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-66-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-5232-0x00000000029B0000-0x00000000029CC000-memory.dmp

              memory/3232-5235-0x0000000006470000-0x0000000006480000-memory.dmp

              memory/3232-5238-0x0000000007AC0000-0x0000000007AD2000-memory.dmp

              memory/3232-5237-0x0000000007970000-0x0000000007978000-memory.dmp

              memory/3232-5236-0x00000000064B0000-0x00000000064C6000-memory.dmp

              memory/3232-5234-0x0000000002A40000-0x0000000002A48000-memory.dmp

              memory/3232-5233-0x00000000029E0000-0x0000000002A30000-memory.dmp

              memory/3232-5239-0x0000000007980000-0x0000000007988000-memory.dmp

              memory/3232-5241-0x0000000007CE0000-0x0000000007D72000-memory.dmp

              memory/3232-5240-0x00000000079F0000-0x0000000007A00000-memory.dmp

              memory/3232-5242-0x0000000007A20000-0x0000000007A2A000-memory.dmp

              memory/3232-5245-0x0000000007A60000-0x0000000007A68000-memory.dmp

              memory/3232-5244-0x0000000007A40000-0x0000000007A4C000-memory.dmp

              memory/3232-5243-0x0000000007A30000-0x0000000007A38000-memory.dmp

              memory/3232-5247-0x0000000007A70000-0x0000000007A82000-memory.dmp

              memory/3232-5250-0x0000000007C50000-0x0000000007C5C000-memory.dmp

              memory/3232-5249-0x0000000007C30000-0x0000000007C3C000-memory.dmp

              memory/3232-5248-0x0000000007D80000-0x00000000082AC000-memory.dmp

              memory/3232-5251-0x0000000007C60000-0x0000000007C6C000-memory.dmp

              memory/3232-5252-0x0000000007C80000-0x0000000007C8C000-memory.dmp

              memory/3232-5258-0x0000000008600000-0x000000000860A000-memory.dmp

              memory/3232-5259-0x0000000008610000-0x000000000861C000-memory.dmp

              memory/3232-5257-0x0000000008790000-0x0000000008798000-memory.dmp

              memory/3232-5256-0x0000000008780000-0x0000000008788000-memory.dmp

              memory/3232-5255-0x0000000008750000-0x000000000875E000-memory.dmp

              memory/3232-5254-0x0000000008740000-0x000000000874A000-memory.dmp

              memory/3232-5253-0x00000000084F0000-0x00000000084F8000-memory.dmp

              memory/3232-5262-0x0000000008630000-0x0000000008696000-memory.dmp

              memory/3232-5265-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-6568-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-7004-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-0-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-1-0x0000000005740000-0x00000000059F8000-memory.dmp

              memory/3232-2-0x0000000005470000-0x0000000005480000-memory.dmp

              memory/3232-3-0x0000000005A00000-0x0000000005FA4000-memory.dmp

              memory/3232-4-0x0000000005480000-0x0000000005736000-memory.dmp

              memory/3232-20-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-18-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-16-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-12-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/3232-14-0x0000000005480000-0x0000000005731000-memory.dmp

              memory/5380-18548-0x0000000006510000-0x000000000655C000-memory.dmp

              memory/5380-18547-0x00000000063C0000-0x00000000063DE000-memory.dmp

              memory/5380-6248-0x0000000005550000-0x0000000005B78000-memory.dmp

              memory/5380-6247-0x0000000002E00000-0x0000000002E36000-memory.dmp

              memory/5380-21075-0x00000000078F0000-0x00000000078FA000-memory.dmp

              memory/5380-8363-0x0000000005D50000-0x0000000005DB6000-memory.dmp

              memory/5380-8362-0x0000000005CB0000-0x0000000005CD2000-memory.dmp

              memory/5380-21064-0x0000000070EF0000-0x0000000070F3C000-memory.dmp

              memory/5380-8567-0x0000000005E30000-0x0000000006184000-memory.dmp

              memory/5380-21078-0x0000000007AB0000-0x0000000007ABE000-memory.dmp

              memory/5452-21063-0x0000000007350000-0x000000000736E000-memory.dmp

              memory/5452-21073-0x0000000007D40000-0x00000000083BA000-memory.dmp

              memory/5452-21081-0x0000000007A10000-0x0000000007A18000-memory.dmp

              memory/5452-21067-0x0000000007610000-0x00000000076B3000-memory.dmp

              memory/5452-21077-0x00000000078F0000-0x0000000007901000-memory.dmp

              memory/5452-21080-0x0000000007A30000-0x0000000007A4A000-memory.dmp

              memory/5452-21074-0x00000000076F0000-0x000000000770A000-memory.dmp

              memory/5452-21053-0x0000000070EF0000-0x0000000070F3C000-memory.dmp