Analysis

  • max time kernel
    206s
  • max time network
    210s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 10:06

General

  • Target

    terminal.exe

  • Size

    2.9MB

  • MD5

    200451026a7f2be02adb274026dc827a

  • SHA1

    655f5cff899d319975dfd43b1902e6318a0944f6

  • SHA256

    88953240e260b3ca53b4563afa657ee6d414b887a972e8862b12ca46e0a5853d

  • SHA512

    1054e3b258fab5f496cea9e156b0b17b9e5b1f4f5b049a4308df1b200d89534c88ec1ff11e6612a2b0961842984fe31d7d38b8077c14fd9bb388a03e7d0c3ac8

  • SSDEEP

    49152:1bA3PlN3nP+YscRfII1f8CReMT1Um7GWw/N0TOu09gqpBuuDqtmAP:1buN3nrsc5fdRfTr7GWw/ayl9RIuDqtZ

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 21 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.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 14 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\terminal.exe
    "C:\Users\Admin\AppData\Local\Temp\terminal.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\containercomponentfontruntime\qhSOQkLJ6CCd.vbe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4968
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\containercomponentfontruntime\XmZE9.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2180
        • C:\containercomponentfontruntime\portdrivernet.exe
          "C:\containercomponentfontruntime\portdrivernet.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:1000
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\MMGmcnDfFC.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4072
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:4164
              • C:\Program Files\Microsoft Office 15\ClientX64\RuntimeBroker.exe
                "C:\Program Files\Microsoft Office 15\ClientX64\RuntimeBroker.exe"
                6⤵
                • UAC bypass
                • Executes dropped EXE
                • Checks whether UAC is enabled
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                • System policy modification
                PID:5008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\StartMenuExperienceHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Default User\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4948
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3336
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\Setup\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4212
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Setup\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1228
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Windows\Setup\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3580
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1768
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office 15\ClientX64\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2516
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1844
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4816
    • 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:3772
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1160
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Users\Default\PrintHood\sihost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3524
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\Default\PrintHood\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Users\Default\PrintHood\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2844
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\SchCache\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1464
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\SchCache\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1328
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\SchCache\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2256
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Favorites\Links\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1036
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Users\Admin\Favorites\Links\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2784
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Favorites\Links\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:808
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x2f4 0x328
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3772

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      229B

      MD5

      ec5fd41c3baa29c8f27216806fb4e2b7

      SHA1

      b3efa1abfa30287ad0d319015ec3c79e30556ed1

      SHA256

      a82f00f1115f5d55c3401be8cd523f218adaff0e105b65aa920eb2c706796d49

      SHA512

      23fa53479ff75be34ea08c22555bfa26b9192f63091d22b90c9be40e278896345d515a65d52f0a2f77df4a1f8e6138130a6c491582c809b44a274299e6fc9128

    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_8377EEF89A67432890A3EB90968C6C1C.dat

      Filesize

      940B

      MD5

      85b1dd66a92694d9ad4d9c5b84e393d7

      SHA1

      c60b569ceea8bc850a5e13404680f97e0bdc6922

      SHA256

      c907c42285f919a317192918d457506fd845fa6393e65d47468303c3affcff74

      SHA512

      9dea86bdd374df64532ace42e888312bb6283bbd19fbda09a175406d9ac9e8f91d834d4819b72d115023576e6f7c96c08909366c7dced65ccb23c777bcf97ddd

    • C:\containercomponentfontruntime\XmZE9.bat

      Filesize

      52B

      MD5

      7f19dde92420e1112fb9ef25b0c56e38

      SHA1

      9da19ead2fccc172a39171f026eed2623229d2b7

      SHA256

      697ad5724417463eb1e37c6e173bc24ca4416b3c064036b06b5c05bc6c33742a

      SHA512

      6a184f7e5fb90e302fbdc92eff043b84cab803e741abea94a7a06e1c3f502babd60b95e75b705ae8cd27430dc0bf3873d4ff9b719ea28648f50e080ebef79268

    • C:\containercomponentfontruntime\portdrivernet.exe

      Filesize

      2.7MB

      MD5

      718e0805d80d7e040a20b5aeda4f877d

      SHA1

      c83f6d2c1ec158e20af2bf54f4d7aeb465cbe58e

      SHA256

      cb1189a7b059346d31cca7596357609eb52e9e518ef59a7659a0e061602f7c0b

      SHA512

      d3854ad4a29732f802a5087c320ca8b85cf46a818f5d283ab612254e9b495e4019c58cc1c8fe7d9f369e070a025d367d6226cf92343b1cafdc8f4aab9fb38cc9

    • C:\containercomponentfontruntime\qhSOQkLJ6CCd.vbe

      Filesize

      211B

      MD5

      8ac77355599fe3bfb19415a591c62148

      SHA1

      ca5b38c7525b454144d6dfb681a7d5b7c8afd807

      SHA256

      993cc8867a308e64cb94b89206c6632cc1e160a5de372e29686b86a7eb9b318b

      SHA512

      38c7bce3490a171bda26f482e1ef50cdd5cbe8f59f9ce5bafbc452fb8f3b878b9e72a3358489765e8b30ca19e8dba9cb9ffed92f24267a7ba0aab5311416b2b6

    • memory/1000-24-0x000000001BA20000-0x000000001BA32000-memory.dmp

      Filesize

      72KB

    • memory/1000-26-0x000000001BA50000-0x000000001BA58000-memory.dmp

      Filesize

      32KB

    • memory/1000-20-0x0000000003080000-0x0000000003088000-memory.dmp

      Filesize

      32KB

    • memory/1000-19-0x0000000003060000-0x0000000003076000-memory.dmp

      Filesize

      88KB

    • memory/1000-18-0x0000000003050000-0x0000000003060000-memory.dmp

      Filesize

      64KB

    • memory/1000-17-0x0000000003040000-0x0000000003048000-memory.dmp

      Filesize

      32KB

    • memory/1000-22-0x000000001B9D0000-0x000000001BA26000-memory.dmp

      Filesize

      344KB

    • memory/1000-16-0x0000000003090000-0x00000000030E0000-memory.dmp

      Filesize

      320KB

    • memory/1000-15-0x0000000003020000-0x000000000303C000-memory.dmp

      Filesize

      112KB

    • memory/1000-14-0x0000000002EF0000-0x0000000002EFE000-memory.dmp

      Filesize

      56KB

    • memory/1000-23-0x00000000030F0000-0x00000000030F8000-memory.dmp

      Filesize

      32KB

    • memory/1000-28-0x000000001BA70000-0x000000001BA7C000-memory.dmp

      Filesize

      48KB

    • memory/1000-27-0x000000001BA60000-0x000000001BA68000-memory.dmp

      Filesize

      32KB

    • memory/1000-21-0x00000000030E0000-0x00000000030EA000-memory.dmp

      Filesize

      40KB

    • memory/1000-25-0x000000001C600000-0x000000001CB28000-memory.dmp

      Filesize

      5.2MB

    • memory/1000-32-0x000000001BAB0000-0x000000001BABC000-memory.dmp

      Filesize

      48KB

    • memory/1000-31-0x000000001BAA0000-0x000000001BAAA000-memory.dmp

      Filesize

      40KB

    • memory/1000-30-0x000000001BA90000-0x000000001BA9C000-memory.dmp

      Filesize

      48KB

    • memory/1000-29-0x000000001BA80000-0x000000001BA8E000-memory.dmp

      Filesize

      56KB

    • memory/1000-13-0x0000000000A20000-0x0000000000CD4000-memory.dmp

      Filesize

      2.7MB

    • memory/1000-12-0x00007FFC7E2B3000-0x00007FFC7E2B5000-memory.dmp

      Filesize

      8KB

    • memory/5008-57-0x000000001D200000-0x000000001D2AA000-memory.dmp

      Filesize

      680KB

    • memory/5008-61-0x0000000020000000-0x0000000020207000-memory.dmp

      Filesize

      2.0MB

    • memory/5008-56-0x0000000001920000-0x0000000001944000-memory.dmp

      Filesize

      144KB

    • memory/5008-64-0x0000000020000000-0x0000000020207000-memory.dmp

      Filesize

      2.0MB