Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    06-02-2025 03:15

General

  • Target

    7f9578cac30087f4675bbcb003ed8b5e.exe

  • Size

    2.3MB

  • MD5

    7f9578cac30087f4675bbcb003ed8b5e

  • SHA1

    b42579f5efbc5efa18eb442c2fc61fa90d988718

  • SHA256

    f732f0392878698cc5d43a9d8129c3b16eaa6cc4b50a79b548a32dde7a0456bc

  • SHA512

    e2933cef7a5fe25e230e66473acf663859441cf159269db345b12ff082f88f555bf56ec565ba42c61f61db1cc742cb63f2eb77cf37ac9512b7587a56c0f4f8d1

  • SSDEEP

    24576:8ITVuaZN/8RjsOUQ1svsFlreQmkaZrtdYetEfUhdHWIVqk+dKLkHXBwYlINmm4Uh:8BSe/UwPItdrtEfUhdHWIVnTLUmz0kB

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 10 IoCs
  • Drops file in Windows directory 8 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: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 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\7f9578cac30087f4675bbcb003ed8b5e.exe
    "C:\Users\Admin\AppData\Local\Temp\7f9578cac30087f4675bbcb003ed8b5e.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:2344
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\z26DDFSbMd.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:1796
        • C:\Program Files (x86)\Microsoft Visual Studio 8\VSTA\Bin\csrss.exe
          "C:\Program Files (x86)\Microsoft Visual Studio 8\VSTA\Bin\csrss.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\VSTA\Bin\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2780
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\VSTA\Bin\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2860
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\VSTA\Bin\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2908
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "7f9578cac30087f4675bbcb003ed8b5e7" /sc MINUTE /mo 12 /tr "'C:\Windows\DigitalLocker\ja-JP\7f9578cac30087f4675bbcb003ed8b5e.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2492
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "7f9578cac30087f4675bbcb003ed8b5e" /sc ONLOGON /tr "'C:\Windows\DigitalLocker\ja-JP\7f9578cac30087f4675bbcb003ed8b5e.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2640
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "7f9578cac30087f4675bbcb003ed8b5e7" /sc MINUTE /mo 10 /tr "'C:\Windows\DigitalLocker\ja-JP\7f9578cac30087f4675bbcb003ed8b5e.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 "dwmd" /sc MINUTE /mo 5 /tr "'C:\Windows\security\logs\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\security\logs\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2720
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Windows\security\logs\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2868
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\audiodg.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2636
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\audiodg.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 "audiodga" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2752
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1144
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2156
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1104
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Media Player\Network Sharing\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\Network Sharing\dwm.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 "dwmd" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Media Player\Network Sharing\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1016
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2924
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2368
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2732
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1652
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Windows\Registration\CRMLog\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1672
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\Registration\CRMLog\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Windows\Registration\CRMLog\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:828
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2400
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\Idle.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 "dwmd" /sc MINUTE /mo 10 /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1932

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Internet Explorer\csrss.exe

      Filesize

      2.3MB

      MD5

      7f9578cac30087f4675bbcb003ed8b5e

      SHA1

      b42579f5efbc5efa18eb442c2fc61fa90d988718

      SHA256

      f732f0392878698cc5d43a9d8129c3b16eaa6cc4b50a79b548a32dde7a0456bc

      SHA512

      e2933cef7a5fe25e230e66473acf663859441cf159269db345b12ff082f88f555bf56ec565ba42c61f61db1cc742cb63f2eb77cf37ac9512b7587a56c0f4f8d1

    • C:\Users\Admin\AppData\Local\Temp\z26DDFSbMd.bat

      Filesize

      232B

      MD5

      0734084acc7d50c007827a21cb350f45

      SHA1

      14ed15f316d084ce9abe9917daee91ed1dd68843

      SHA256

      bdbe259c89ce2b97e0c03b94c36a7a413723d8c7dcea4c58978c128956ab4d3a

      SHA512

      b82eb483b92d226708fbaa14b1e9a314703184486864126fb497c2ea38a3ec5ee66341d09c2a590de70eb13947e1a59993d91fb547de7e6c506dafeb13d15780

    • memory/972-40-0x0000000000140000-0x0000000000152000-memory.dmp

      Filesize

      72KB

    • memory/972-39-0x00000000003B0000-0x0000000000406000-memory.dmp

      Filesize

      344KB

    • memory/972-38-0x00000000013A0000-0x00000000015EE000-memory.dmp

      Filesize

      2.3MB

    • memory/2344-3-0x0000000000460000-0x000000000047C000-memory.dmp

      Filesize

      112KB

    • memory/2344-6-0x0000000000440000-0x0000000000452000-memory.dmp

      Filesize

      72KB

    • memory/2344-7-0x00000000004A0000-0x00000000004AE000-memory.dmp

      Filesize

      56KB

    • memory/2344-5-0x0000000002240000-0x0000000002296000-memory.dmp

      Filesize

      344KB

    • memory/2344-4-0x00000000007C0000-0x00000000007D6000-memory.dmp

      Filesize

      88KB

    • memory/2344-35-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

      Filesize

      9.9MB

    • memory/2344-0-0x000007FEF60D3000-0x000007FEF60D4000-memory.dmp

      Filesize

      4KB

    • memory/2344-2-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

      Filesize

      9.9MB

    • memory/2344-1-0x0000000000820000-0x0000000000A6E000-memory.dmp

      Filesize

      2.3MB