Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    07/01/2024, 21:56

General

  • Target

    c44819eb2ff2ffd7f9bf6163d5994a99.exe

  • Size

    1.5MB

  • MD5

    c44819eb2ff2ffd7f9bf6163d5994a99

  • SHA1

    1af74ac1121a7704c69c934035f68df1d9205576

  • SHA256

    2f9bf1b8e047c1fa8ec80deccb3e9b575aaf5247f23c0fea81157b8b995562c9

  • SHA512

    0ad8b5afd6482327feba6a79cd5a7bfbbbc40bc7888783e757c5b3d4b6a9db4e2f1b6f108351b2d3390028e767e3e5fb7ac6354c0a9f66553e37d13741bb4420

  • SSDEEP

    24576:d2G/nvxW3W9hIWg69UY2cJLejOLGz3lVPde0Aj2CQrOyRgwpqhrVcyXSIhQ:dbA3G33sRCvyRg5qt

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Process spawned unexpected child process 36 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 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 36 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 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\c44819eb2ff2ffd7f9bf6163d5994a99.exe
    "C:\Users\Admin\AppData\Local\Temp\c44819eb2ff2ffd7f9bf6163d5994a99.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\comRefNetCommonsvc\8MgiEWoxbbYDSMA1DFyZ.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2108
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\comRefNetCommonsvc\QGIh2QXQ99ka6NL.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2056
        • C:\comRefNetCommonsvc\chainPerfDll.exe
          "C:\comRefNetCommonsvc\chainPerfDll.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2700
          • C:\Users\All Users\Favorites\dwm.exe
            "C:\Users\All Users\Favorites\dwm.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2396
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2580
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2612
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\comRefNetCommonsvc\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2588
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2632
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\comRefNetCommonsvc\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\cmd.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2540
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\MSOCache\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1516
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2224
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Recovery\7156ad82-9b8d-11ee-a45c-bce704e297ea\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\7156ad82-9b8d-11ee-a45c-bce704e297ea\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2892
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Recovery\7156ad82-9b8d-11ee-a45c-bce704e297ea\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2992
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Desktop\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Admin\Desktop\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2468
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Desktop\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1448
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Favorites\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\All Users\Favorites\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1972
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\Favorites\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1824
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\comRefNetCommonsvc\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2040
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\comRefNetCommonsvc\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2520
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\comRefNetCommonsvc\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1072
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\comRefNetCommonsvc\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:948
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\comRefNetCommonsvc\audiodg.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2312
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 7 /tr "'C:\comRefNetCommonsvc\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:240
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 10 /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1476
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1364
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:336
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:944
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2428
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 12 /tr "'C:\comRefNetCommonsvc\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1864
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files\Uninstall Information\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1396
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 6 /tr "'C:\Program Files\Uninstall Information\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1888

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\comRefNetCommonsvc\8MgiEWoxbbYDSMA1DFyZ.vbe

          Filesize

          210B

          MD5

          9dac29d31af393491b90673d79ff8a4b

          SHA1

          05b71211575fc4861dd075b11da6bd87f62f4554

          SHA256

          ad8055cfb3e110b7b7227c9db5071559f8b8e5d4fa8cf05892ddc3f7a45551bc

          SHA512

          2bff06e8702ff5ceaf401fa46644df737b55ff898db0005380f370a04ba0bd2c32fbf6f6227b9937ef6202070d3995d4a78774211c73b8c1ac2f9859e8279fcb

        • C:\comRefNetCommonsvc\QGIh2QXQ99ka6NL.bat

          Filesize

          40B

          MD5

          f3be4b07d4624cfa5a444497e00c14d2

          SHA1

          3edb26d22f70e32f95d506528d682de73cf0b8cf

          SHA256

          7a61441e265ab1772ffe1e87c7002aa1f4533313c1383905fe8d1508b2d14ed8

          SHA512

          182e0e08d93a1ca74524d4a1bb38ab7824115293e5fc168f6337daefc107a0835c925ea6c47ac29446539212ee270838399d6a6106f641555377c457cd0fee12

        • \comRefNetCommonsvc\chainPerfDll.exe

          Filesize

          1.2MB

          MD5

          7f0a2572a0910b3f9e08175f93ebfe22

          SHA1

          c62ed7ea6d001dcac8b6fdcd65b00708c6c4fbbe

          SHA256

          55db61ef4e149769a22b6eadd09776016263884c5fb26fc5949fad81cce7960b

          SHA512

          e758ac2cf3072e5e6906883a908f1b6fbfb62e05e8a9639e6bdcd18183ef15a1989c4e12a9ad33ac82f59c05333d49c84b95ab731699660fe41c2b0fc580750f

        • memory/2396-51-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

          Filesize

          9.9MB

        • memory/2396-54-0x000000001AEF0000-0x000000001AF70000-memory.dmp

          Filesize

          512KB

        • memory/2396-53-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

          Filesize

          9.9MB

        • memory/2396-52-0x000000001AEF0000-0x000000001AF70000-memory.dmp

          Filesize

          512KB

        • memory/2396-50-0x0000000000040000-0x0000000000174000-memory.dmp

          Filesize

          1.2MB

        • memory/2700-16-0x00000000004F0000-0x000000000050C000-memory.dmp

          Filesize

          112KB

        • memory/2700-49-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

          Filesize

          9.9MB

        • memory/2700-18-0x0000000000530000-0x000000000053C000-memory.dmp

          Filesize

          48KB

        • memory/2700-17-0x0000000000510000-0x0000000000526000-memory.dmp

          Filesize

          88KB

        • memory/2700-15-0x000000001B000000-0x000000001B080000-memory.dmp

          Filesize

          512KB

        • memory/2700-14-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

          Filesize

          9.9MB

        • memory/2700-13-0x00000000000F0000-0x0000000000224000-memory.dmp

          Filesize

          1.2MB