Resubmissions

25-11-2024 10:00

241125-l129jaxlhr 10

25-11-2024 09:58

241125-lzk9ma1kg1 10

25-11-2024 09:56

241125-lyt55s1kew 10

25-11-2024 09:46

241125-lrsnqswral 10

Analysis

  • max time kernel
    407s
  • max time network
    416s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-uk
  • resource tags

    arch:x64arch:x86image:win11-20241007-uklocale:uk-uaos:windows11-21h2-x64systemwindows
  • submitted
    25-11-2024 09:46

General

  • Target

    EXECUTOR METEOR .exe

  • Size

    1.1MB

  • MD5

    e5be94d6e847bb7656e80201cacf67fb

  • SHA1

    cc1ce69eea609b5fc9ff18f09407b934690bcff3

  • SHA256

    be5c49fa94be78520ee83ed6230a80aaf0ae9dd4bb2d6053aa8f843131f2f506

  • SHA512

    306c26f1e72a32c479b8d9112e2e0c5d22fd0e46b02ae5fa7ffff51191c9d79a52a2dbe7d200e0dc9cccf0919cba3693905c8b2dc6c6fc8f3d7eaf883e388100

  • SSDEEP

    24576:U2G/nvxW3Ww0tiUfTyqyg1hIZ9XWp7wJO:UbA30L+ixx

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 24 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.

  • Executes dropped EXE 2 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 2 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 24 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 19 IoCs
  • Suspicious use of WriteProcessMemory 10 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\EXECUTOR METEOR .exe
    "C:\Users\Admin\AppData\Local\Temp\EXECUTOR METEOR .exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:232
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\comReviewrefPerf\Elw8H.vbe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3324
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\comReviewrefPerf\8WD994.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5084
        • C:\comReviewrefPerf\surrogateRuntime.exe
          "C:\comReviewrefPerf\surrogateRuntime.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4784
          • C:\Program Files\Windows Photo Viewer\it-IT\csrss.exe
            "C:\Program Files\Windows Photo Viewer\it-IT\csrss.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:2752
  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\Новий Microsoft Word Document.docx" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1984
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\WmiPrvSE.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4848
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2296
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1064
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Photo Viewer\it-IT\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3332
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\it-IT\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2300
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Photo Viewer\it-IT\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1284
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1416
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4676
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4888
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Admin\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2652
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2612
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5052
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\es-ES\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1304
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1108
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "surrogateRuntimes" /sc MINUTE /mo 11 /tr "'C:\Windows\Sun\Java\Deployment\surrogateRuntime.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "surrogateRuntime" /sc ONLOGON /tr "'C:\Windows\Sun\Java\Deployment\surrogateRuntime.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4892
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "surrogateRuntimes" /sc MINUTE /mo 8 /tr "'C:\Windows\Sun\Java\Deployment\surrogateRuntime.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1516
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1408
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3788
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\comReviewrefPerf\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3208
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\comReviewrefPerf\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4816
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\comReviewrefPerf\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1536
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
    1⤵
      PID:5064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\TCDC992.tmp\iso690.xsl

      Filesize

      263KB

      MD5

      ff0e07eff1333cdf9fc2523d323dd654

      SHA1

      77a1ae0dd8dbc3fee65dd6266f31e2a564d088a4

      SHA256

      3f925e0cc1542f09de1f99060899eafb0042bb9682507c907173c392115a44b5

      SHA512

      b4615f995fab87661c2dbe46625aa982215d7bde27cafae221dca76087fe76da4b4a381943436fcac1577cb3d260d0050b32b7b93e3eb07912494429f126bb3d

    • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

      Filesize

      383B

      MD5

      6ccabd0db2ed4a18daa4b3ee115bf7e5

      SHA1

      644cfc265ea06914a37b48ecb5b22d90fb780012

      SHA256

      d42ec12bcc1a68689e5dab75bdcca6df806ecf6caa3f39b5584bad26a3af774c

      SHA512

      ede9136a83e7d356212b07818fc9076a756c671973d30b25ec9f9e591d71464826c84a842f6851f58dd821b8476c99a7719ffa2f5a0a2d3decf960e34c03a3e4

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

      Filesize

      2KB

      MD5

      98436b5461d986b434d3810c509559d6

      SHA1

      dd17bdb6b35939cfa17ff3417992d2e8079a398c

      SHA256

      6cc4910458c0a78e092621ce5230d21eda20d840ffbb76ccab58a33ab4beed8e

      SHA512

      3455a5e3dd246fabcd808cfb8a742526c3e6715a058c6e7270bdebb7fb554bf185fe3030286a625ec4f88bc5a8fa2b8090fe897b31b79610e06dd3e17b058375

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

      Filesize

      3KB

      MD5

      cb8813c9b7279d8725dfd3374850deeb

      SHA1

      71fa5efd89f15191b288f29d901f58112c26a87f

      SHA256

      6a2513efef2a4a7863c73bbf62e79c2db44ff7e348b76501384b43f9241df69e

      SHA512

      79e7c047d94c413cfb1bed9a30e3a68ac943edb139dc9b7fbea8ac5843e230576d19ebc8baa4c056518622b169427487d9421b5fd45cabcdbb23afa38421df43

    • C:\comReviewrefPerf\8WD994.bat

      Filesize

      42B

      MD5

      ff1d6e65d0b458accf2d7e9cf078f012

      SHA1

      4a7a0831b061ce2c72dfe5dbb8d3e06ef48fb9c4

      SHA256

      2a3d5e93e6c1c94626f81d252cf9e831a94337a8fc871efa3560fbe966e35580

      SHA512

      1888c69ad30ab13f71aee80de86aaebb04c1ee7b08bc4f8f5e41dc325399cdc1c3bb956d9401ea6c51b425305d2835fffcae60fc4b8644fab255c03f37431d15

    • C:\comReviewrefPerf\Elw8H.vbe

      Filesize

      200B

      MD5

      a44fada9f313e0d6008aef960aeae861

      SHA1

      9217e79ff49d67baca484f5a5e9418cca3fb9b2e

      SHA256

      1e5c949fd2059fda331f7cd178a359f2ac4d4dd8cdae76543f21493b2ffb9d44

      SHA512

      800052e7c0cd62433bde0084b94ac3b44ddece5adc144c8e02a2e7dc8629b683ac3a94c6218bf61a595731d2dc1adf596c5bf101fc2d9c3723c3a099d2c853f7

    • C:\comReviewrefPerf\surrogateRuntime.exe

      Filesize

      828KB

      MD5

      422e6efd4d4c62a97c78be894b85a535

      SHA1

      6de90977b41153d67fdca7a9119edf382d7e5414

      SHA256

      fddbbd909aeb6e9466e3c926f7773f23f84d392604a2619caa3f5a4c9d63eb8c

      SHA512

      1c545785df5e6be6b1142adb94cc6779020d409fddd429743eb69646b35a7acafadb2445218445bbc7e5c02171f1b531d9a7c623d834c18dd49161708529d388

    • memory/1984-23-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-28-0x00007FFA60C40000-0x00007FFA60C50000-memory.dmp

      Filesize

      64KB

    • memory/1984-21-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-19-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-18-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-17-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-16-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-15-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-14-0x00007FFA63330000-0x00007FFA63340000-memory.dmp

      Filesize

      64KB

    • memory/1984-13-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-10-0x00007FFA63330000-0x00007FFA63340000-memory.dmp

      Filesize

      64KB

    • memory/1984-25-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-26-0x00007FFA60C40000-0x00007FFA60C50000-memory.dmp

      Filesize

      64KB

    • memory/1984-24-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-27-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-22-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-20-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-12-0x00007FFA63330000-0x00007FFA63340000-memory.dmp

      Filesize

      64KB

    • memory/1984-8-0x00007FFA63330000-0x00007FFA63340000-memory.dmp

      Filesize

      64KB

    • memory/1984-88-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-89-0x00007FFAA3343000-0x00007FFAA3344000-memory.dmp

      Filesize

      4KB

    • memory/1984-90-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-91-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-92-0x00007FFAA32A0000-0x00007FFAA34A9000-memory.dmp

      Filesize

      2.0MB

    • memory/1984-11-0x00007FFA63330000-0x00007FFA63340000-memory.dmp

      Filesize

      64KB

    • memory/1984-9-0x00007FFAA3343000-0x00007FFAA3344000-memory.dmp

      Filesize

      4KB

    • memory/4784-59-0x0000000000840000-0x0000000000916000-memory.dmp

      Filesize

      856KB