Analysis

  • max time kernel
    21s
  • max time network
    25s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    07-02-2025 09:51

General

  • Target

    a2bf0fc5a323073723c337d9a90e5141bd2ff9ad0b3f70459ee695962f87f8e6.exe

  • Size

    827KB

  • MD5

    23d0dbe545edf5e3f6d5f89306091acb

  • SHA1

    d2aa733c6e5bcfd64030c810014c09e52eb64474

  • SHA256

    a2bf0fc5a323073723c337d9a90e5141bd2ff9ad0b3f70459ee695962f87f8e6

  • SHA512

    65e3f360ccf29130b709ca6ba06f7809578bd860e7bc12da1631467899db017feeaf92fa804c797ccbcaa96c97ed7911a1e7021a8c5df84779e66caa8bf8f69a

  • SSDEEP

    12288:THO6O1v7cpNWrqV908Etd+U4UCrw3EO9VENXJMV5SEZd0ju:b0v7cpXVe8EtwUtD3ET6SEZR

Score
10/10

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 33 IoCs

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

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 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\a2bf0fc5a323073723c337d9a90e5141bd2ff9ad0b3f70459ee695962f87f8e6.exe
    "C:\Users\Admin\AppData\Local\Temp\a2bf0fc5a323073723c337d9a90e5141bd2ff9ad0b3f70459ee695962f87f8e6.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\5A7NK7qd0S.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:268
        • C:\Windows\Cursors\sppsvc.exe
          "C:\Windows\Cursors\sppsvc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: CmdExeWriteProcessMemorySpam
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2692
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Windows\Cursors\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\Cursors\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2072
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\Windows\Cursors\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1528
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2852
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2736
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2792
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2632
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:328
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Uninstall Information\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3048
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2100
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 10 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2500
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2568
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\dllhost.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 "dllhostd" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Users\Default User\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3056
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1692
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2212
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2396
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 13 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2944
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1240
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Sidebar\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2208
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2480
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Sidebar\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2272
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Program Files\Microsoft Games\FreeCell\de-DE\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2440
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Microsoft Games\FreeCell\de-DE\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Games\FreeCell\de-DE\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2084

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\lsass.exe

      Filesize

      827KB

      MD5

      23d0dbe545edf5e3f6d5f89306091acb

      SHA1

      d2aa733c6e5bcfd64030c810014c09e52eb64474

      SHA256

      a2bf0fc5a323073723c337d9a90e5141bd2ff9ad0b3f70459ee695962f87f8e6

      SHA512

      65e3f360ccf29130b709ca6ba06f7809578bd860e7bc12da1631467899db017feeaf92fa804c797ccbcaa96c97ed7911a1e7021a8c5df84779e66caa8bf8f69a

    • C:\Users\Admin\AppData\Local\Temp\5A7NK7qd0S.bat

      Filesize

      194B

      MD5

      109fd170cfd4b2b8206268e0320dcb10

      SHA1

      87f7ab51816eb78b085771829d70703495a3f51b

      SHA256

      008c10b4fb637b63c56638e424d971ef95a361db66494ea244e2145ad50ff033

      SHA512

      56b319440e64096c77e3ce2cfcd799e7bacd7a1f19b5247248d9879a382a546f508497675ef2c322b63252829256c35ac1ae9325916ab032583323b5c1a5cc5d

    • memory/2692-33-0x0000000000350000-0x0000000000426000-memory.dmp

      Filesize

      856KB

    • memory/2904-0-0x000007FEF5F03000-0x000007FEF5F04000-memory.dmp

      Filesize

      4KB

    • memory/2904-1-0x0000000000D00000-0x0000000000DD6000-memory.dmp

      Filesize

      856KB

    • memory/2904-2-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

      Filesize

      9.9MB

    • memory/2904-30-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

      Filesize

      9.9MB