Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 05:16

General

  • Target
    1021fa67374cae06dedfcffa98e8fe1e.exe
  • Size 1.1MB
  • Sample240616-fx413avekr
  • SHA256 c2cf72416cd1a5cba005636dfa5ca341c92ed72a62ca0423ed55d3d4eb33721a
  • MD5 SHA1 SHA512 SSDEEP
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 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Drops file in Windows 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 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\1021fa67374cae06dedfcffa98e8fe1e.exe
    "C:\Users\Admin\AppData\Local\Temp\1021fa67374cae06dedfcffa98e8fe1e.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1332
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Providerfontdriver\GtJGZIQMbL.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4000
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Providerfontdriver\YASZsbGc.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3900
        • C:\Providerfontdriver\chainSvc.exe
          "C:\Providerfontdriver\chainSvc.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1700
          • C:\Users\Admin\Downloads\SppExtComObj.exe
            "C:\Users\Admin\Downloads\SppExtComObj.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4220
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Downloads\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1776
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Users\Admin\Downloads\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2540
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Downloads\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2924
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 9 /tr "'C:\Program Files\VideoLAN\VLC\locale\ko\LC_MESSAGES\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4584
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\locale\ko\LC_MESSAGES\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3708
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 6 /tr "'C:\Program Files\VideoLAN\VLC\locale\ko\LC_MESSAGES\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\es-ES\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4292
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\es-ES\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4336
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\es-ES\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Local Settings\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1444
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Local Settings\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3832
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\cmd.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4644
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:412
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\Windows\tracing\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1408
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\tracing\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1268
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\Windows\tracing\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1844
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3168
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Registration\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:600
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Registration\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Registration\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2208
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Providerfontdriver\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3012
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Providerfontdriver\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2504
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Providerfontdriver\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1244
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 5 /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3560
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2376
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 11 /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Common Files\Oracle\Java\javapath\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Oracle\Java\javapath\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1436
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Common Files\Oracle\Java\javapath\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4596
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1540
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4936
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4396

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        GtJGZIQMbL.vbe

        • Path C:\Providerfontdriver\GtJGZIQMbL.vbe
        • Size 203B
        • SHA256 bae06d4f4d86008f5e819ac12fec723f02c287b3b97a5054cc54fb43bfd93607
        • MD5 SHA1 SHA512

        YASZsbGc.bat

        • Path C:\Providerfontdriver\YASZsbGc.bat
        • Size 36B
        • SHA256 922711a6daeda8fdb60b24fae327e12fbaab7c5004b104097c452d244b2351be
        • MD5 SHA1 SHA512

        chainSvc.exe

        • Path C:\Providerfontdriver\chainSvc.exe
        • Size 828KB
        • SHA256 4a369e21290f35af7d98a5e32ad7a99d7f628f54a6e5093cecf38b7fd37ec136
        • MD5 SHA1 SHA512 SSDEEP

        memory/1700-12-0x00007FFDB63F3000-0x00007FFDB63F5000-memory.dmp

        memory/1700-13-0x00000000006A0000-0x0000000000776000-memory.dmp