Analysis

  • max time kernel
    37s
  • max time network
    155s
  • 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, 11:19

General

  • Target
    2026-04-24_e34cafe3fbb130824e8e3153693d1a20_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample260424-ne3dhsf181
  • SHA256 0ceac172b5af0c51a5f2e5c2beb2a3e9289832a92f21b0b4e5f5271bcea69cb3
  • 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 1 IoCs
  • Process spawned unexpected child process 12 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • Detects executables packed with SmartAssembly 7 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • System policy modification 1 TTPs 3 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_e34cafe3fbb130824e8e3153693d1a20_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_e34cafe3fbb130824e8e3153693d1a20_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:4180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2026-04-24_e34cafe3fbb130824e8e3153693d1a20_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:2920
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\edge_BITS_4428_17523161\smss.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:4864
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default User\explorer.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:936
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:3732
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\All Users\RuntimeBroker.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:5132
    • C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe
      "C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe"
      2⤵
        PID:5668
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Program Files\edge_BITS_4428_17523161\smss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\edge_BITS_4428_17523161\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5780
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\edge_BITS_4428_17523161\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1512
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3320
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Default User\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1788
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1168
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5480
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:6004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\All Users\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5956
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3232
    • C:\Users\All Users\RuntimeBroker.exe
      "C:\Users\All Users\RuntimeBroker.exe"
      1⤵
        PID:5040
      • C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe
        "C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\explorer.exe"
        1⤵
          PID:364
        • C:\Users\Default User\explorer.exe
          "C:\Users\Default User\explorer.exe"
          1⤵
            PID:3112
          • C:\Program Files\edge_BITS_4428_17523161\smss.exe
            "C:\Program Files\edge_BITS_4428_17523161\smss.exe"
            1⤵
              PID:5812

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  RuntimeBroker.exe

                  • Path C:\ProgramData\RuntimeBroker.exe
                  • Size 2.0MB
                  • SHA256 0ceac172b5af0c51a5f2e5c2beb2a3e9289832a92f21b0b4e5f5271bcea69cb3
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  RCX91CC.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RCX91CC.tmp
                  • Size 2.0MB
                  • SHA256 f3914e229c946912d3ffba36262e3642b0615ed6ea888f33e61fda8565100f8c
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  __PSScriptPolicyTest_1n1wtbpg.ypb.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1n1wtbpg.ypb.ps1
                  • Size 60B
                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                  • MD5 SHA1 SHA512 TLSH

                  memory/2920-7173-0x0000000004640000-0x0000000004676000-memory.dmp

                  memory/2920-11074-0x0000000005560000-0x00000000055C6000-memory.dmp

                  memory/2920-11445-0x0000000005640000-0x0000000005994000-memory.dmp

                  memory/2920-11070-0x00000000054C0000-0x00000000054E2000-memory.dmp

                  memory/4180-40-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-5258-0x00000000097D0000-0x00000000097DA000-memory.dmp

                  memory/4180-5-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-8-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-12-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-10-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-6-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-16-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-14-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-44-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-48-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-68-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-90-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-92-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-112-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-120-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-118-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-116-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-114-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-110-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-108-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-106-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-104-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-102-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-100-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-98-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-96-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-94-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-88-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-86-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-84-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-82-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-78-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-76-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-74-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-72-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-80-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-70-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-66-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-64-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-60-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-31-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-54-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-52-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-50-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-62-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-56-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-46-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-42-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-3-0x0000000005630000-0x0000000005BD4000-memory.dmp

                  memory/4180-38-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-36-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-4-0x00000000050B0000-0x0000000005366000-memory.dmp

                  memory/4180-34-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-58-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-28-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-22-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-20-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-18-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-26-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-24-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-122-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-128-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-130-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-127-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-124-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-1422-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-1680-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-1893-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-5231-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-5232-0x0000000004B50000-0x0000000004B6C000-memory.dmp

                  memory/4180-5233-0x0000000004B80000-0x0000000004BD0000-memory.dmp

                  memory/4180-5234-0x0000000004BE0000-0x0000000004BE8000-memory.dmp

                  memory/4180-5235-0x0000000006310000-0x0000000006320000-memory.dmp

                  memory/4180-5236-0x0000000006350000-0x0000000006366000-memory.dmp

                  memory/4180-5237-0x0000000007810000-0x0000000007818000-memory.dmp

                  memory/4180-5238-0x0000000007960000-0x0000000007972000-memory.dmp

                  memory/4180-5239-0x0000000007830000-0x0000000007838000-memory.dmp

                  memory/4180-5240-0x00000000078B0000-0x00000000078C0000-memory.dmp

                  memory/4180-5241-0x0000000007A70000-0x0000000007B02000-memory.dmp

                  memory/4180-5242-0x0000000007890000-0x000000000789A000-memory.dmp

                  memory/4180-5243-0x00000000078E0000-0x00000000078E8000-memory.dmp

                  memory/4180-5244-0x00000000078F0000-0x00000000078FC000-memory.dmp

                  memory/4180-5245-0x0000000007910000-0x0000000007918000-memory.dmp

                  memory/4180-5247-0x0000000007920000-0x0000000007932000-memory.dmp

                  memory/4180-5248-0x0000000008F50000-0x000000000947C000-memory.dmp

                  memory/4180-5250-0x0000000007B90000-0x0000000007B9C000-memory.dmp

                  memory/4180-5251-0x0000000007BA0000-0x0000000007BAC000-memory.dmp

                  memory/4180-5249-0x0000000007B70000-0x0000000007B7C000-memory.dmp

                  memory/4180-5252-0x0000000007BC0000-0x0000000007BCC000-memory.dmp

                  memory/4180-5253-0x0000000007BD0000-0x0000000007BD8000-memory.dmp

                  memory/4180-5255-0x0000000009780000-0x000000000978E000-memory.dmp

                  memory/4180-5257-0x00000000097C0000-0x00000000097C8000-memory.dmp

                  memory/4180-32-0x00000000050B0000-0x0000000005361000-memory.dmp

                  memory/4180-5256-0x00000000097B0000-0x00000000097B8000-memory.dmp

                  memory/4180-5254-0x0000000007C70000-0x0000000007C7A000-memory.dmp

                  memory/4180-5259-0x00000000097E0000-0x00000000097EC000-memory.dmp

                  memory/4180-5263-0x0000000007CB0000-0x0000000007D16000-memory.dmp

                  memory/4180-5262-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-7216-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-2-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-1-0x0000000005370000-0x0000000005628000-memory.dmp

                  memory/4180-0-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/4180-8028-0x00000000050A0000-0x00000000050B0000-memory.dmp

                  memory/5132-7340-0x0000000005020000-0x0000000005648000-memory.dmp