Analysis

  • max time kernel
    8s
  • max time network
    2s
  • platform
    windows7_x64
  • resource
    win7-20250207-de
  • resource tags

    arch:x64arch:x86image:win7-20250207-delocale:de-deos:windows7-x64systemwindows
  • submitted
    08-02-2025 19:46

General

  • Target

    8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b.exe

  • Size

    3.2MB

  • MD5

    4735bb00bcb92c0c5d85599e289925ef

  • SHA1

    90dee1ecc8721777366e9c0d2d3c9fc2df6a925b

  • SHA256

    8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b

  • SHA512

    673a67e73f8d3a31403cee50234d3160afe3eda75f75935677f9da0e955e28e67d9265c1a23c80b0fab7bd1aaa85ece8e3bf1bf085e76d9cbbd498a34a77287e

  • SSDEEP

    98304:BjxkN1YiQ2DmsiJb0D2OG5Mbser0ZAY8pD1X0C:B161YitDZiJoZgAY8pDl0

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 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 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\8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b.exe
    "C:\Users\Admin\AppData\Local\Temp\8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1740
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Y4DflOqySg.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2636
        • C:\Users\Admin\AppData\Local\Temp\8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b.exe
          "C:\Users\Admin\AppData\Local\Temp\8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b.exe"
          3⤵
          • UAC bypass
          • Checks whether UAC is enabled
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:1392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\taskhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2924
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows NT\taskhost.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 "wininitw" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2016
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1888
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1908
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2076
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Desktop\lsm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2640
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Admin\Desktop\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2892
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Desktop\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2304
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Users\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2292
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2280
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2072
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows NT\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1880
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2080
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2560

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\wininit.exe

      Filesize

      3.2MB

      MD5

      4735bb00bcb92c0c5d85599e289925ef

      SHA1

      90dee1ecc8721777366e9c0d2d3c9fc2df6a925b

      SHA256

      8d34477674ccda710d5acd22a1ea3ce7c9e818d7b6d3b19200c896fcf42f5b4b

      SHA512

      673a67e73f8d3a31403cee50234d3160afe3eda75f75935677f9da0e955e28e67d9265c1a23c80b0fab7bd1aaa85ece8e3bf1bf085e76d9cbbd498a34a77287e

    • C:\Users\Admin\AppData\Local\Temp\Y4DflOqySg.bat

      Filesize

      267B

      MD5

      a6277b8116320cf9cf632adb63f4fef3

      SHA1

      9b4df636c86854220af1ee4723d89dd9d59a5ee4

      SHA256

      e0b313edbd5df6dca27d5a35f1db41a07691f3aaff7511c2f9a427406a95bd8d

      SHA512

      9e2d71b427fc9085f3ad961e93d35b1cb959f04d0800a1a7c8cfc7d15aacb173913d80250411bdde0dcea63411a705364daff1c3685c3595a7d780f41b96c29a

    • memory/1392-57-0x00000000007C0000-0x00000000007D2000-memory.dmp

      Filesize

      72KB

    • memory/1392-56-0x00000000000B0000-0x00000000003EE000-memory.dmp

      Filesize

      3.2MB

    • memory/1740-20-0x0000000000FD0000-0x0000000000FE2000-memory.dmp

      Filesize

      72KB

    • memory/1740-2-0x000007FEF6630000-0x000007FEF701C000-memory.dmp

      Filesize

      9.9MB

    • memory/1740-6-0x0000000000590000-0x00000000005AC000-memory.dmp

      Filesize

      112KB

    • memory/1740-22-0x0000000001010000-0x000000000101C000-memory.dmp

      Filesize

      48KB

    • memory/1740-8-0x0000000000610000-0x0000000000626000-memory.dmp

      Filesize

      88KB

    • memory/1740-9-0x0000000000BE0000-0x0000000000BE8000-memory.dmp

      Filesize

      32KB

    • memory/1740-10-0x0000000000BF0000-0x0000000000C02000-memory.dmp

      Filesize

      72KB

    • memory/1740-11-0x0000000000C90000-0x0000000000C9C000-memory.dmp

      Filesize

      48KB

    • memory/1740-12-0x0000000000C80000-0x0000000000C88000-memory.dmp

      Filesize

      32KB

    • memory/1740-13-0x0000000000D20000-0x0000000000D30000-memory.dmp

      Filesize

      64KB

    • memory/1740-14-0x0000000000D30000-0x0000000000D3A000-memory.dmp

      Filesize

      40KB

    • memory/1740-15-0x0000000000E40000-0x0000000000E96000-memory.dmp

      Filesize

      344KB

    • memory/1740-16-0x0000000000E90000-0x0000000000E9C000-memory.dmp

      Filesize

      48KB

    • memory/1740-17-0x0000000000FA0000-0x0000000000FA8000-memory.dmp

      Filesize

      32KB

    • memory/1740-18-0x0000000000FB0000-0x0000000000FBC000-memory.dmp

      Filesize

      48KB

    • memory/1740-19-0x0000000000FC0000-0x0000000000FC8000-memory.dmp

      Filesize

      32KB

    • memory/1740-0-0x000007FEF6633000-0x000007FEF6634000-memory.dmp

      Filesize

      4KB

    • memory/1740-21-0x0000000001000000-0x0000000001008000-memory.dmp

      Filesize

      32KB

    • memory/1740-7-0x0000000000360000-0x0000000000368000-memory.dmp

      Filesize

      32KB

    • memory/1740-5-0x0000000000350000-0x0000000000358000-memory.dmp

      Filesize

      32KB

    • memory/1740-25-0x0000000001140000-0x000000000114C000-memory.dmp

      Filesize

      48KB

    • memory/1740-24-0x0000000001030000-0x000000000103C000-memory.dmp

      Filesize

      48KB

    • memory/1740-26-0x0000000001160000-0x0000000001168000-memory.dmp

      Filesize

      32KB

    • memory/1740-27-0x0000000001150000-0x000000000115C000-memory.dmp

      Filesize

      48KB

    • memory/1740-28-0x0000000001170000-0x000000000117A000-memory.dmp

      Filesize

      40KB

    • memory/1740-29-0x0000000001180000-0x000000000118E000-memory.dmp

      Filesize

      56KB

    • memory/1740-30-0x0000000001190000-0x0000000001198000-memory.dmp

      Filesize

      32KB

    • memory/1740-31-0x000000001B010000-0x000000001B01E000-memory.dmp

      Filesize

      56KB

    • memory/1740-32-0x000000001B020000-0x000000001B028000-memory.dmp

      Filesize

      32KB

    • memory/1740-33-0x000000001B030000-0x000000001B038000-memory.dmp

      Filesize

      32KB

    • memory/1740-34-0x000000001B040000-0x000000001B04A000-memory.dmp

      Filesize

      40KB

    • memory/1740-35-0x000000001B050000-0x000000001B05C000-memory.dmp

      Filesize

      48KB

    • memory/1740-4-0x0000000000340000-0x000000000034E000-memory.dmp

      Filesize

      56KB

    • memory/1740-55-0x000007FEF6630000-0x000007FEF701C000-memory.dmp

      Filesize

      9.9MB

    • memory/1740-3-0x0000000000330000-0x000000000033E000-memory.dmp

      Filesize

      56KB

    • memory/1740-23-0x0000000001020000-0x0000000001028000-memory.dmp

      Filesize

      32KB

    • memory/1740-1-0x00000000011A0000-0x00000000014DE000-memory.dmp

      Filesize

      3.2MB