Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-12-2024 12:51

General

  • Target

    3E30BD01F2053EE82162F5ECA0FAEFE8.exe

  • Size

    1.3MB

  • MD5

    3e30bd01f2053ee82162f5eca0faefe8

  • SHA1

    e5859be6a67c8d33a34707df9c13c8ddce6cc690

  • SHA256

    85768ff86e86155faadff2443ea1c9656fc479ffa5f0ae90c9b738bf31ff1080

  • SHA512

    ede7e3f18f0add3744b64955744067654a147e2f4dc33d7d4b9e82d02c7698ea3654ea4623a424729f1e6528314049e102aa2f74b223b16638276e758c5bb9e5

  • SSDEEP

    24576:A3HWfVXWNnnOtB3c20/vtKMpw7fuWppvKoxdO3zFuI:g2fWnnwa2qhcN/5xM

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 39 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.

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 13 IoCs
  • Drops file in Windows directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 39 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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\3E30BD01F2053EE82162F5ECA0FAEFE8.exe
    "C:\Users\Admin\AppData\Local\Temp\3E30BD01F2053EE82162F5ECA0FAEFE8.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2400
    • C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe
      "C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1732
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\260d43e9-7429-4b0d-84ab-da33c0228025.vbs"
        3⤵
          PID:2052
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\8dd7b627-a399-4e7d-b58d-e072d1c3a154.vbs"
          3⤵
            PID:1808
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "servicess" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Common Files\SpeechEngines\Microsoft\services.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2728
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\SpeechEngines\Microsoft\services.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2552
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Common Files\SpeechEngines\Microsoft\services.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2604
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Windows\debug\WIA\lsass.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2224
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\debug\WIA\lsass.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 "lsassl" /sc MINUTE /mo 11 /tr "'C:\Windows\debug\WIA\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1128
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\Globalization\winlogon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2212
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Globalization\winlogon.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 "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Windows\Globalization\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1964
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Windows\IME\de-DE\explorer.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2988
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\IME\de-DE\explorer.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2340
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Windows\IME\de-DE\explorer.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 "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\RemotePackages\RemoteDesktops\winlogon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2112
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\RemotePackages\RemoteDesktops\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2872
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\RemotePackages\RemoteDesktops\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2944
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Portable Devices\OSPPSVC.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3040
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\OSPPSVC.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2528
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Portable Devices\OSPPSVC.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2888
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\winlogon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2128
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2408
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1348
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\dwm.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:592
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\dwm.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:976
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\dwm.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1752
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 14 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2096
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2100
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 9 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.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 "explorere" /sc MINUTE /mo 11 /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\explorer.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1844
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\explorer.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2440
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\explorer.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2200
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "3E30BD01F2053EE82162F5ECA0FAEFE83" /sc MINUTE /mo 5 /tr "'C:\Windows\Web\Wallpaper\Windows\3E30BD01F2053EE82162F5ECA0FAEFE8.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1324
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "3E30BD01F2053EE82162F5ECA0FAEFE8" /sc ONLOGON /tr "'C:\Windows\Web\Wallpaper\Windows\3E30BD01F2053EE82162F5ECA0FAEFE8.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:316
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "3E30BD01F2053EE82162F5ECA0FAEFE83" /sc MINUTE /mo 10 /tr "'C:\Windows\Web\Wallpaper\Windows\3E30BD01F2053EE82162F5ECA0FAEFE8.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1512
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\Idle.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:772
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\es-ES\Idle.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2060
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Photo Viewer\es-ES\Idle.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:556
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Mail\services.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2416
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\services.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1508
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Mail\services.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1644

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\260d43e9-7429-4b0d-84ab-da33c0228025.vbs

        Filesize

        736B

        MD5

        f0978cdd0ea372d609a235b2e8223045

        SHA1

        6f2c8d4e738f19af17bef64fdee76e08477170b1

        SHA256

        33bbd3b537d4859beac62c9803b763f67bfafcf251111581401b953983d273a7

        SHA512

        cbf5a3f05b3b4b04ad2b676773a5dde56c11693b1fcad85baa3880423f664bb3666b657f0275a1e17f47f122dd75be8cd1bf8d39bbe75f1f9cc901b17b8bf8e5

      • C:\Users\Admin\AppData\Local\Temp\8dd7b627-a399-4e7d-b58d-e072d1c3a154.vbs

        Filesize

        512B

        MD5

        57e61c59f285045f530beac2d1f449ed

        SHA1

        078c90072084f1c98521519e3842a42d4b103402

        SHA256

        07e51dd732e2f49cbdcb9aacdd17b317cc4570921668bfa972b43c4f979675ec

        SHA512

        460706e865a66b90edad12d620a0408eefc95a1b690a10f026e7430edcb0c4b853ce1de0f956163940c7fa4bad5bc07b5bf3cabb21a51e5b544b9829d87981d8

      • C:\Windows\RemotePackages\RemoteDesktops\winlogon.exe

        Filesize

        1.3MB

        MD5

        3e30bd01f2053ee82162f5eca0faefe8

        SHA1

        e5859be6a67c8d33a34707df9c13c8ddce6cc690

        SHA256

        85768ff86e86155faadff2443ea1c9656fc479ffa5f0ae90c9b738bf31ff1080

        SHA512

        ede7e3f18f0add3744b64955744067654a147e2f4dc33d7d4b9e82d02c7698ea3654ea4623a424729f1e6528314049e102aa2f74b223b16638276e758c5bb9e5

      • memory/1732-46-0x0000000000160000-0x00000000002AA000-memory.dmp

        Filesize

        1.3MB

      • memory/2400-8-0x00000000009F0000-0x00000000009FC000-memory.dmp

        Filesize

        48KB

      • memory/2400-11-0x00000000021A0000-0x00000000021AE000-memory.dmp

        Filesize

        56KB

      • memory/2400-5-0x00000000009E0000-0x00000000009E8000-memory.dmp

        Filesize

        32KB

      • memory/2400-7-0x0000000000A90000-0x0000000000A9A000-memory.dmp

        Filesize

        40KB

      • memory/2400-0-0x000007FEF6233000-0x000007FEF6234000-memory.dmp

        Filesize

        4KB

      • memory/2400-9-0x0000000002180000-0x000000000218C000-memory.dmp

        Filesize

        48KB

      • memory/2400-10-0x0000000002190000-0x000000000219A000-memory.dmp

        Filesize

        40KB

      • memory/2400-6-0x0000000000A80000-0x0000000000A88000-memory.dmp

        Filesize

        32KB

      • memory/2400-12-0x000000001AA90000-0x000000001AA9E000-memory.dmp

        Filesize

        56KB

      • memory/2400-13-0x000000001AAA0000-0x000000001AAA8000-memory.dmp

        Filesize

        32KB

      • memory/2400-4-0x0000000000450000-0x000000000045E000-memory.dmp

        Filesize

        56KB

      • memory/2400-47-0x000007FEF6230000-0x000007FEF6C1C000-memory.dmp

        Filesize

        9.9MB

      • memory/2400-3-0x0000000000440000-0x000000000044E000-memory.dmp

        Filesize

        56KB

      • memory/2400-2-0x000007FEF6230000-0x000007FEF6C1C000-memory.dmp

        Filesize

        9.9MB

      • memory/2400-1-0x0000000000AB0000-0x0000000000BFA000-memory.dmp

        Filesize

        1.3MB