Analysis

  • max time kernel
    91s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 18:12

General

  • Target

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe

  • Size

    2.8MB

  • MD5

    6258c0d7c31a5ba4b2b0cb9c97606acd

  • SHA1

    123138131fc33eeeedc82e795f201981232a55b1

  • SHA256

    8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

  • SHA512

    9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

  • SSDEEP

    49152:rPloaBLYs0dLLXmgmQPDWSJNCQdi2GjyIlAd28nZbmsl+S2sJaOP:rPl7ZoLbFmsPNHi2GjLAdVlqO

Malware Config

Signatures

  • DcRat 34 IoCs

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

  • Dcrat family
  • Process spawned unexpected child process 33 IoCs

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

  • UAC bypass 3 TTPs 12 IoCs
  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 8 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 33 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 12 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⤵
    • DcRat
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4812
    • C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe
      "C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe"
      2⤵
      • UAC bypass
      • Checks computer location settings
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:5080
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\n7JG6kRkYa.bat"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2216
        • C:\Windows\system32\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          4⤵
            PID:2776
          • C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe
            "C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe"
            4⤵
            • UAC bypass
            • Checks computer location settings
            • Executes dropped EXE
            • 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:560
            • C:\Windows\Speech\SppExtComObj.exe
              "C:\Windows\Speech\SppExtComObj.exe"
              5⤵
              • UAC bypass
              • Executes dropped EXE
              • Checks whether UAC is enabled
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • System policy modification
              PID:4524
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3604
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2272
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3464
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3792
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3260
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4268
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4760
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\OneDrive\RuntimeBroker.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Admin\OneDrive\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\OneDrive\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4048
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Windows\Speech\SppExtComObj.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:472
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\Speech\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Windows\Speech\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Windows\Help\OEM\ContentStore\dllhost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4332
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\Help\OEM\ContentStore\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4472
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Windows\Help\OEM\ContentStore\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:544
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\regid.1991-06.com.microsoft\Registry.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4200
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Users\All Users\regid.1991-06.com.microsoft\Registry.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\regid.1991-06.com.microsoft\Registry.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2196
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\smss.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2244
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2416
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4880
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed48" /sc MINUTE /mo 11 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3716
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed48" /sc MINUTE /mo 8 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4308
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Windows\DigitalLocker\en-US\fontdrvhost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3024
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\DigitalLocker\en-US\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4380
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Windows\DigitalLocker\en-US\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4664
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2108
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:212

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe.log

      Filesize

      1KB

      MD5

      bbb951a34b516b66451218a3ec3b0ae1

      SHA1

      7393835a2476ae655916e0a9687eeaba3ee876e9

      SHA256

      eb70c64ae99d14ac2588b7a84854fbf3c420532d7fe4dfd49c7b5a70c869943a

      SHA512

      63bcbfcf8e7421c66855c487c31b2991a989bdea0c1edd4c40066b52fa3eb3d9d37db1cd21b8eb4f33dd5870cc20532c8f485eab9c0b4f6b0793a35c077f2d6f

    • C:\Users\Admin\AppData\Local\Temp\8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4.exe

      Filesize

      2.8MB

      MD5

      6258c0d7c31a5ba4b2b0cb9c97606acd

      SHA1

      123138131fc33eeeedc82e795f201981232a55b1

      SHA256

      8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

      SHA512

      9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

    • C:\Users\Admin\AppData\Local\Temp\n7JG6kRkYa.bat

      Filesize

      267B

      MD5

      863a91914054563f8d91a4d89048929a

      SHA1

      799921ce44c930bbca38b70b3a7c99b011097986

      SHA256

      5a5c8bb7ad54e5f770d70bb08d87e1efce097cd0f84cc4529d85f0d8c4c4ef2c

      SHA512

      81c3e6a172bd9824e06f43875ca92102539d585e1219886e21ae5c186fca3470b52c467b8709a90e3f1ef47a142bc85ae6eb3cf9c508a8543107334fc4a475fe

    • memory/4524-126-0x000000001BF10000-0x000000001BF22000-memory.dmp

      Filesize

      72KB

    • memory/4524-125-0x000000001BEF0000-0x000000001BF02000-memory.dmp

      Filesize

      72KB

    • memory/4812-13-0x000000001B870000-0x000000001B878000-memory.dmp

      Filesize

      32KB

    • memory/4812-18-0x000000001C300000-0x000000001C30C000-memory.dmp

      Filesize

      48KB

    • memory/4812-10-0x000000001B860000-0x000000001B872000-memory.dmp

      Filesize

      72KB

    • memory/4812-9-0x0000000002D60000-0x0000000002D68000-memory.dmp

      Filesize

      32KB

    • memory/4812-7-0x0000000002D30000-0x0000000002D40000-memory.dmp

      Filesize

      64KB

    • memory/4812-6-0x00000000014E0000-0x00000000014E8000-memory.dmp

      Filesize

      32KB

    • memory/4812-11-0x000000001B890000-0x000000001B89A000-memory.dmp

      Filesize

      40KB

    • memory/4812-12-0x000000001C010000-0x000000001C066000-memory.dmp

      Filesize

      344KB

    • memory/4812-14-0x000000001B880000-0x000000001B892000-memory.dmp

      Filesize

      72KB

    • memory/4812-0-0x00007FFEAA393000-0x00007FFEAA395000-memory.dmp

      Filesize

      8KB

    • memory/4812-15-0x000000001C5B0000-0x000000001CAD8000-memory.dmp

      Filesize

      5.2MB

    • memory/4812-16-0x000000001B8A0000-0x000000001B8A8000-memory.dmp

      Filesize

      32KB

    • memory/4812-17-0x000000001C080000-0x000000001C08C000-memory.dmp

      Filesize

      48KB

    • memory/4812-8-0x0000000002D40000-0x0000000002D56000-memory.dmp

      Filesize

      88KB

    • memory/4812-20-0x000000001C1A0000-0x000000001C1AC000-memory.dmp

      Filesize

      48KB

    • memory/4812-19-0x000000001C190000-0x000000001C19E000-memory.dmp

      Filesize

      56KB

    • memory/4812-21-0x000000001C1B0000-0x000000001C1BA000-memory.dmp

      Filesize

      40KB

    • memory/4812-22-0x000000001C2C0000-0x000000001C2CC000-memory.dmp

      Filesize

      48KB

    • memory/4812-5-0x000000001BEC0000-0x000000001BF10000-memory.dmp

      Filesize

      320KB

    • memory/4812-4-0x00000000014C0000-0x00000000014DC000-memory.dmp

      Filesize

      112KB

    • memory/4812-32-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

      Filesize

      10.8MB

    • memory/4812-1-0x0000000000910000-0x0000000000BE2000-memory.dmp

      Filesize

      2.8MB

    • memory/4812-3-0x00000000014A0000-0x00000000014AE000-memory.dmp

      Filesize

      56KB

    • memory/4812-2-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

      Filesize

      10.8MB

    • memory/5080-33-0x000000001B320000-0x000000001B332000-memory.dmp

      Filesize

      72KB