Analysis

  • max time kernel
    95s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/01/2025, 01:16

General

  • Target
    ba65161e6e83ddc896f9a5461f93d8f1.exe
  • Size 2.7MB
  • Sample250109-bmsststqhp
  • SHA256 b8b5f7e2edc5114c9554dde3723b6f6221e4ec5ae0379c7feff8e2bc7398507d
  • MD5 SHA1 SHA512 SSDEEP

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 45 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 12 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 35 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 45 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 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\ba65161e6e83ddc896f9a5461f93d8f1.exe
    "C:\Users\Admin\AppData\Local\Temp\ba65161e6e83ddc896f9a5461f93d8f1.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • 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
    • System policy modification
    PID:1320
    • C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe
      "C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:2716
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Windows\Offline Web Pages\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3960
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\Offline Web Pages\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4232
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Windows\Offline Web Pages\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2364
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Defender\it-IT\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3988
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\it-IT\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2268
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Defender\it-IT\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3724
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4064
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2536
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4088
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4976
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4860
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1604
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3200
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4812
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4516
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\Registry.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4596
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4364
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1572
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1664
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1176
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3092
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1292
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4736
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Admin\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1232
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Photo Viewer\uk-UA\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4936
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\uk-UA\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Photo Viewer\uk-UA\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3256
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:388
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3636
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4492
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Multimedia Platform\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4588
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:732
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1108
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3524
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3592
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Users\Default\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Default\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Users\Default\spoolsv.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 "sysmons" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5112
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3392

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        sysmon.exe

        • Path C:\Program Files (x86)\Internet Explorer\ja-JP\sysmon.exe
        • Size 2.7MB
        • SHA256 3a9ff5815fd69a53678a5fcafbe969d127ec1ebdeb05b4b9339e05c5e288cb3f
        • MD5 SHA1 SHA512 SSDEEP

        Registry.exe

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\Registry.exe
        • Size 2.7MB
        • SHA256 6265c5bae24ac36308f9f8f8b24fd2ec7d3d697a06c5a893ccdc16a2b3ea157c
        • MD5 SHA1 SHA512 SSDEEP

        SearchApp.exe

        • Path C:\Program Files (x86)\Windows Multimedia Platform\SearchApp.exe
        • Size 2.7MB
        • SHA256 73b226d857d07c4797fdc471dd64d2185f8a10f756833b7d0334997974a10465
        • MD5 SHA1 SHA512 SSDEEP

        sysmon.exe

        • Path C:\Program Files (x86)\Windows Multimedia Platform\sysmon.exe
        • Size 2.7MB
        • SHA256 2eed74ab5a730f68b4620bd85ff88725b8242596a5407937e202fcfa56aa16ba
        • MD5 SHA1 SHA512 SSDEEP

        Idle.exe

        • Path C:\Recovery\WindowsRE\Idle.exe
        • Size 2.7MB
        • SHA256 0198b35209cfe1aa52304800e8085b1898f93701b00bf4a0f2c5433579e3cf59
        • MD5 SHA1 SHA512 SSDEEP

        Registry.exe

        • Path C:\Recovery\WindowsRE\Registry.exe
        • Size 2.7MB
        • SHA256 c632d9b95a9c860950db205e72065663fade272723a725a1be07ff2bdff2eef7
        • MD5 SHA1 SHA512 SSDEEP

        RuntimeBroker.exe

        • Path C:\Recovery\WindowsRE\RuntimeBroker.exe
        • Size 2.7MB
        • SHA256 273b4f7204452ec7a6fd87327db15ae4d1b9e525998cd24125521e3979366724
        • MD5 SHA1 SHA512 SSDEEP

        lsass.exe

        • Path C:\Recovery\WindowsRE\lsass.exe
        • Size 2.7MB
        • SHA256 b8b5f7e2edc5114c9554dde3723b6f6221e4ec5ae0379c7feff8e2bc7398507d
        • MD5 SHA1 SHA512 SSDEEP

        lsass.exe

        • Path C:\Recovery\WindowsRE\lsass.exe
        • Size 2.7MB
        • SHA256 51db3c5996fa9ee9603aa4dcd1ea805d43d16c0fa9d46366b6ac9ef6d445d8f0
        • MD5 SHA1 SHA512 SSDEEP

        spoolsv.exe

        • Path C:\Users\Default\spoolsv.exe
        • Size 2.7MB
        • SHA256 75ef4fd435eca99af76159ca6324869703ea6b226e4f7a2cb8118dc35bb7cd76
        • MD5 SHA1 SHA512 SSDEEP

        memory/1320-9-0x000000001B8F0000-0x000000001B8F8000-memory.dmp

        memory/1320-0-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

        memory/1320-12-0x000000001B910000-0x000000001B918000-memory.dmp

        memory/1320-13-0x000000001B920000-0x000000001B932000-memory.dmp

        memory/1320-14-0x000000001BF30000-0x000000001C458000-memory.dmp

        memory/1320-16-0x000000001BA00000-0x000000001BA08000-memory.dmp

        memory/1320-19-0x000000001BA20000-0x000000001BA2C000-memory.dmp

        memory/1320-18-0x000000001BA10000-0x000000001BA1E000-memory.dmp

        memory/1320-20-0x000000001BA30000-0x000000001BA3A000-memory.dmp

        memory/1320-17-0x000000001BB10000-0x000000001BB1C000-memory.dmp

        memory/1320-15-0x000000001B930000-0x000000001B938000-memory.dmp

        memory/1320-21-0x000000001BA40000-0x000000001BA4C000-memory.dmp

        memory/1320-10-0x000000001B900000-0x000000001B90A000-memory.dmp

        memory/1320-11-0x000000001B990000-0x000000001B9E6000-memory.dmp

        memory/1320-7-0x000000001B1B0000-0x000000001B1C0000-memory.dmp

        memory/1320-8-0x000000001B1C0000-0x000000001B1D6000-memory.dmp

        memory/1320-6-0x0000000002800000-0x0000000002808000-memory.dmp

        memory/1320-5-0x000000001B940000-0x000000001B990000-memory.dmp

        memory/1320-170-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

        memory/1320-4-0x0000000002820000-0x000000000283C000-memory.dmp

        memory/1320-3-0x00000000027F0000-0x00000000027FE000-memory.dmp

        memory/1320-193-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

        memory/1320-2-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

        memory/1320-1-0x00000000003B0000-0x0000000000664000-memory.dmp

        memory/1320-289-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

        memory/2716-288-0x0000000000DD0000-0x0000000001084000-memory.dmp