Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-10-2024 03:04

General

  • Target

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe

  • Size

    2.8MB

  • MD5

    6258c0d7c31a5ba4b2b0cb9c97606acd

  • SHA1

    123138131fc33eeeedc82e795f201981232a55b1

  • SHA256

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

  • SHA512

    9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

  • SSDEEP

    49152:rPloaBLYs0dLLXmgmQPDWSJNCQdi2GjyIlAd28nZbmsl+S2sJaOP:rPl7ZoLbFmsPNHi2GjLAdVlqO

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 42 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 15 IoCs
  • Drops file in Windows directory 12 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 42 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe
    "C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.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:3612
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\lFjmtLGJzS.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4012
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2356
        • C:\Windows\Fonts\lsass.exe
          "C:\Windows\Fonts\lsass.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:1148
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Defender\uk-UA\OfficeClickToRun.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\uk-UA\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Defender\uk-UA\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1944
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed48" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Internet Explorer\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4356
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1440
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed48" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Internet Explorer\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4300
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 10 /tr "'C:\Windows\Fonts\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3040
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\Fonts\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3176
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Windows\Fonts\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2656
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:700
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 6 /tr "'C:\Windows\TAPI\OfficeClickToRun.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3020
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Windows\TAPI\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4380
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 5 /tr "'C:\Windows\TAPI\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:384
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 12 /tr "'C:\Program Files\WindowsPowerShell\Modules\PackageManagement\backgroundTaskHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Modules\PackageManagement\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:968
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 6 /tr "'C:\Program Files\WindowsPowerShell\Modules\PackageManagement\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:380
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1524
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4428
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2780
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4720
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4804
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\it-IT\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\it-IT\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4480
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\it-IT\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3164
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Pictures\backgroundTaskHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4388
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Users\Default\Pictures\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4080
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Pictures\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4240
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4696
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Windows\RemotePackages\RemoteDesktops\SppExtComObj.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\RemotePackages\RemoteDesktops\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3168
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Windows\RemotePackages\RemoteDesktops\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:752
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:992

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\lFjmtLGJzS.bat

      Filesize

      191B

      MD5

      e7c01ad1689d1f347d8723862f0cc9eb

      SHA1

      77aab0811e2d279d9d29d9c850e23906a8a5e094

      SHA256

      b12ce2e359996992eb284f9b2accca292ac81031790e0016877da2306ee601f2

      SHA512

      8e642daee3891d96dcab914a7c317dfa2767348832278010e3c71388f6a8656f4dc588466ec97f152de52b3cfc8a8741a1e6fef62ff244ce62f749c29b78c742

    • C:\Windows\TAPI\OfficeClickToRun.exe

      Filesize

      2.8MB

      MD5

      6258c0d7c31a5ba4b2b0cb9c97606acd

      SHA1

      123138131fc33eeeedc82e795f201981232a55b1

      SHA256

      8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

      SHA512

      9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

    • memory/1148-77-0x000000001D5F0000-0x000000001D602000-memory.dmp

      Filesize

      72KB

    • memory/3612-14-0x000000001C360000-0x000000001C372000-memory.dmp

      Filesize

      72KB

    • memory/3612-17-0x000000001C550000-0x000000001C55C000-memory.dmp

      Filesize

      48KB

    • memory/3612-5-0x000000001C380000-0x000000001C3D0000-memory.dmp

      Filesize

      320KB

    • memory/3612-7-0x000000001BBE0000-0x000000001BBF0000-memory.dmp

      Filesize

      64KB

    • memory/3612-9-0x000000001C330000-0x000000001C338000-memory.dmp

      Filesize

      32KB

    • memory/3612-10-0x000000001C340000-0x000000001C352000-memory.dmp

      Filesize

      72KB

    • memory/3612-8-0x000000001BBF0000-0x000000001BC06000-memory.dmp

      Filesize

      88KB

    • memory/3612-6-0x000000001BBD0000-0x000000001BBD8000-memory.dmp

      Filesize

      32KB

    • memory/3612-11-0x000000001C370000-0x000000001C37A000-memory.dmp

      Filesize

      40KB

    • memory/3612-12-0x000000001C4D0000-0x000000001C526000-memory.dmp

      Filesize

      344KB

    • memory/3612-13-0x000000001C350000-0x000000001C358000-memory.dmp

      Filesize

      32KB

    • memory/3612-0-0x00007FFA0AAB3000-0x00007FFA0AAB5000-memory.dmp

      Filesize

      8KB

    • memory/3612-15-0x000000001CA70000-0x000000001CF98000-memory.dmp

      Filesize

      5.2MB

    • memory/3612-4-0x0000000003240000-0x000000000325C000-memory.dmp

      Filesize

      112KB

    • memory/3612-18-0x000000001C660000-0x000000001C66C000-memory.dmp

      Filesize

      48KB

    • memory/3612-16-0x000000001C540000-0x000000001C548000-memory.dmp

      Filesize

      32KB

    • memory/3612-19-0x000000001C670000-0x000000001C67E000-memory.dmp

      Filesize

      56KB

    • memory/3612-20-0x000000001C680000-0x000000001C68C000-memory.dmp

      Filesize

      48KB

    • memory/3612-22-0x000000001BB90000-0x000000001BB9C000-memory.dmp

      Filesize

      48KB

    • memory/3612-21-0x000000001C790000-0x000000001C79A000-memory.dmp

      Filesize

      40KB

    • memory/3612-3-0x0000000001880000-0x000000000188E000-memory.dmp

      Filesize

      56KB

    • memory/3612-62-0x00007FFA0AAB3000-0x00007FFA0AAB5000-memory.dmp

      Filesize

      8KB

    • memory/3612-65-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

      Filesize

      10.8MB

    • memory/3612-2-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

      Filesize

      10.8MB

    • memory/3612-73-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

      Filesize

      10.8MB

    • memory/3612-1-0x0000000000DD0000-0x00000000010A2000-memory.dmp

      Filesize

      2.8MB