Analysis

  • max time kernel
    93s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-01-2025 01:14

General

  • Target

    05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.exe

  • Size

    1.8MB

  • MD5

    5d232371c6b04bf6e609ee14fc06f3f6

  • SHA1

    d6b7e0e98b0bd964ce6b2256f7c3f52ea2ec39ba

  • SHA256

    05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1

  • SHA512

    18b7ae05853bbe0109b3f00861b97951a7963036bbe021b3a2ae178c810257033e249613e522c3a4c16ceaa415f3358b8a052c28f321c6128228f38367991cc6

  • SSDEEP

    49152:DT+08U5LLZTm94oY5RMRyAhpXDQt1UJo:DT8EL4I5EfG

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 27 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • 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
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 2 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 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 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\05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.exe
    "C:\Users\Admin\AppData\Local\Temp\05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.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:1644
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\0i9t8dnkYw.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3316
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:1252
        • C:\Recovery\WindowsRE\spoolsv.exe
          "C:\Recovery\WindowsRE\spoolsv.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:3620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1188
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:656
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Users\Public\Music\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2628
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Public\Music\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1836
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Users\Public\Music\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4872
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Windows\L2Schemas\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2492
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\L2Schemas\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Windows\L2Schemas\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3600
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:732
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Multimedia Platform\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2864
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5056
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4184
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1260
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2128
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3932
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 12 /tr "'C:\Users\Public\AccountPictures\Registry.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Users\Public\AccountPictures\Registry.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4220
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 13 /tr "'C:\Users\Public\AccountPictures\Registry.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1820
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2036
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c10" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1872
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c10" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4740

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Recovery\WindowsRE\unsecapp.exe

      Filesize

      1.8MB

      MD5

      5d232371c6b04bf6e609ee14fc06f3f6

      SHA1

      d6b7e0e98b0bd964ce6b2256f7c3f52ea2ec39ba

      SHA256

      05c4814add59df3a27d840a1494002ac0b0e49aa9348229bd9f438d87e3e56c1

      SHA512

      18b7ae05853bbe0109b3f00861b97951a7963036bbe021b3a2ae178c810257033e249613e522c3a4c16ceaa415f3358b8a052c28f321c6128228f38367991cc6

    • C:\Users\Admin\AppData\Local\Temp\0i9t8dnkYw.bat

      Filesize

      198B

      MD5

      a8476a0401def19fb73c205927fef5a7

      SHA1

      5746a4312e4906826a42e3c6e8e00e3e5d528b5e

      SHA256

      c55b5a1f044a569b6627609b9995c7aae0707e3e2e59272bd6bfae8ec6c49636

      SHA512

      a0e872654cf3de47c64ea1d47484ac5ec6d0c0fb13f5caeae0878460422d83a75526ff836efbd2d1014312f78a2a8c1d3dd627674b757853d48f65902491c6a7

    • memory/1644-12-0x000000001C670000-0x000000001CB98000-memory.dmp

      Filesize

      5.2MB

    • memory/1644-4-0x0000000001620000-0x000000000163C000-memory.dmp

      Filesize

      112KB

    • memory/1644-13-0x000000001BFC0000-0x000000001BFCC000-memory.dmp

      Filesize

      48KB

    • memory/1644-5-0x000000001BFF0000-0x000000001C040000-memory.dmp

      Filesize

      320KB

    • memory/1644-7-0x0000000002F60000-0x0000000002F68000-memory.dmp

      Filesize

      32KB

    • memory/1644-8-0x0000000002F70000-0x0000000002F82000-memory.dmp

      Filesize

      72KB

    • memory/1644-6-0x0000000002F40000-0x0000000002F56000-memory.dmp

      Filesize

      88KB

    • memory/1644-9-0x0000000002FB0000-0x0000000002FC0000-memory.dmp

      Filesize

      64KB

    • memory/1644-14-0x000000001BFD0000-0x000000001BFDE000-memory.dmp

      Filesize

      56KB

    • memory/1644-11-0x0000000002FA0000-0x0000000002FB2000-memory.dmp

      Filesize

      72KB

    • memory/1644-0-0x00007FF82BE53000-0x00007FF82BE55000-memory.dmp

      Filesize

      8KB

    • memory/1644-3-0x0000000001610000-0x000000000161E000-memory.dmp

      Filesize

      56KB

    • memory/1644-10-0x0000000002F90000-0x0000000002F9A000-memory.dmp

      Filesize

      40KB

    • memory/1644-16-0x000000001C140000-0x000000001C14E000-memory.dmp

      Filesize

      56KB

    • memory/1644-15-0x000000001BFE0000-0x000000001BFE8000-memory.dmp

      Filesize

      32KB

    • memory/1644-17-0x000000001C150000-0x000000001C15C000-memory.dmp

      Filesize

      48KB

    • memory/1644-18-0x000000001C160000-0x000000001C16C000-memory.dmp

      Filesize

      48KB

    • memory/1644-2-0x00007FF82BE50000-0x00007FF82C911000-memory.dmp

      Filesize

      10.8MB

    • memory/1644-42-0x00007FF82BE50000-0x00007FF82C911000-memory.dmp

      Filesize

      10.8MB

    • memory/1644-1-0x0000000000B20000-0x0000000000CEC000-memory.dmp

      Filesize

      1.8MB

    • memory/3620-47-0x0000000003020000-0x0000000003032000-memory.dmp

      Filesize

      72KB

    • memory/3620-48-0x0000000003030000-0x0000000003042000-memory.dmp

      Filesize

      72KB