Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 16:49

General

  • Target

    93e88c0eeb14a25944205694761570f5e1700e260910134faf82eafe33d0ee1dN.exe

  • Size

    1.1MB

  • MD5

    a4ea523b57cc90848732ee08117646d0

  • SHA1

    a9706d93616af18f00027c6d9c29b6b877497c1e

  • SHA256

    93e88c0eeb14a25944205694761570f5e1700e260910134faf82eafe33d0ee1d

  • SHA512

    b280ef14615e5ebd8aece055c6a1eed253a68b47c26df4e92ed16df054db86d838495056806ff87893e04717e939983aae05dcf4c90eb1c5d2176728a0716a05

  • SSDEEP

    24576:AMYPCI+q+U4cIG409ozWucypk1Nd4AX+iB/YjuM6kyh+i:ABPZ0Kr1FXHB/guM6k+V

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Modifies WinLogon for persistence 2 TTPs 13 IoCs
  • Process spawned unexpected child process 39 IoCs

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

  • DCRat payload 2 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
  • Adds Run key to start application 2 TTPs 26 IoCs
  • Drops file in Program Files directory 14 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 39 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 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\93e88c0eeb14a25944205694761570f5e1700e260910134faf82eafe33d0ee1dN.exe
    "C:\Users\Admin\AppData\Local\Temp\93e88c0eeb14a25944205694761570f5e1700e260910134faf82eafe33d0ee1dN.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • 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:3152
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\64hpDSsbhR.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3120
        • C:\Windows\Migration\WTR\Idle.exe
          "C:\Windows\Migration\WTR\Idle.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:548
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Windows\Migration\WTR\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\Migration\WTR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Windows\Migration\WTR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3576
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\Downloads\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Admin\Downloads\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3940
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Downloads\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1684
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4244
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 8 /tr "'C:\Program Files\Reference Assemblies\Microsoft\SearchApp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1504
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\Microsoft\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3376
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Program Files\Reference Assemblies\Microsoft\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2216
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1980
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3676
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Windows\SoftwareDistribution\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1256
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\SoftwareDistribution\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5076
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Windows\SoftwareDistribution\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4888
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2208
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3116
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Mail\TextInputHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3728
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1848
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Mail\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2132
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Program Files\Common Files\DESIGNER\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Common Files\DESIGNER\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1960
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Program Files\Common Files\DESIGNER\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3012
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Application Data\StartMenuExperienceHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4236
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Default\Application Data\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Application Data\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4284
    • 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:2288
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\Registry.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 "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Security\BrowserCore\en-US\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files\Windows Security\BrowserCore\en-US\winlogon.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 "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Security\BrowserCore\en-US\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2204
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Internet Explorer\es-ES\SppExtComObj.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:460
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\es-ES\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2444
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Internet Explorer\es-ES\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1144

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\sppsvc.exe

      Filesize

      1.1MB

      MD5

      a4ea523b57cc90848732ee08117646d0

      SHA1

      a9706d93616af18f00027c6d9c29b6b877497c1e

      SHA256

      93e88c0eeb14a25944205694761570f5e1700e260910134faf82eafe33d0ee1d

      SHA512

      b280ef14615e5ebd8aece055c6a1eed253a68b47c26df4e92ed16df054db86d838495056806ff87893e04717e939983aae05dcf4c90eb1c5d2176728a0716a05

    • C:\Users\Admin\AppData\Local\Temp\64hpDSsbhR.bat

      Filesize

      198B

      MD5

      8ff872a88e22ea49f908b98e6e115692

      SHA1

      7b76367f77b481cca28a66ca1522539e9c88f1ab

      SHA256

      41d8a2263b5339a6f5adddef7353c70fe7fb1a82bf87c5bba73b82ec274973d1

      SHA512

      da15cc790a223b4baca13f983a24e6fc3b9fab74ef6f1857ed313d1c718e40604a441466b5d3eee83e93082e49e23c26cc63e86bf4954647ed698c9589414351

    • memory/3152-0-0x00007FFA105F3000-0x00007FFA105F5000-memory.dmp

      Filesize

      8KB

    • memory/3152-1-0x00000000008A0000-0x00000000009CE000-memory.dmp

      Filesize

      1.2MB

    • memory/3152-2-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

      Filesize

      10.8MB

    • memory/3152-3-0x0000000002A90000-0x0000000002AAC000-memory.dmp

      Filesize

      112KB

    • memory/3152-5-0x000000001B4E0000-0x000000001B4F2000-memory.dmp

      Filesize

      72KB

    • memory/3152-4-0x000000001B530000-0x000000001B580000-memory.dmp

      Filesize

      320KB

    • memory/3152-6-0x000000001C2F0000-0x000000001C818000-memory.dmp

      Filesize

      5.2MB

    • memory/3152-8-0x000000001B520000-0x000000001B528000-memory.dmp

      Filesize

      32KB

    • memory/3152-7-0x000000001B510000-0x000000001B51E000-memory.dmp

      Filesize

      56KB

    • memory/3152-41-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

      Filesize

      10.8MB