Overview

overview

10

Static

static

10

5d32919063...18.exe

windows7-x64

10

5d32919063...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/07/2024, 18:44

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General

  • Target
    5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe
  • Size 1.3MB
  • Sample240719-xdpkpsyaqd
  • SHA256 6974f159cb6e056fd9675ec4ecb6d271a7d6bb69711a295be593091d3bcb9e45
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
dcratinfostealerpersistencerat

Malware Config

Signatures

  • DcRat 9 IoCs

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

    ratinfostealerdcrat
  • Modifies WinLogon for persistence 2 TTPs 8 IoCs
    persistence
  • Process spawned unexpected child process 8 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.

    rat
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 16 IoCs
    persistence
  • Drops file in System32 directory 8 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe"
    1⤵
    • DcRat
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2184
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Adobe\sN8j8UtUmLUEbzv.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Adobe\87tDm8T1lOvAjdSEmWMIMA3JTpcTMB.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4496
        • C:\Users\Admin\AppData\Roaming\Adobe\hui.exe
          "C:\Users\Admin\AppData\Roaming\Adobe\hui.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2656
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\RVuqL2qAIw.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2856
            • C:\Windows\system32\chcp.com
              chcp 65001
              6⤵
                PID:3148
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                6⤵
                  PID:1852
                • C:\Windows\SKB\LanguageModels\System.exe
                  "C:\Windows\SKB\LanguageModels\System.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3840
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\SKB\LanguageModels\System.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2984
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Documents and Settings\WmiPrvSE.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1856
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\System.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3212
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\rasautou\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:656
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\ProximityCommon\fontdrvhost.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:900
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\coredpussvr\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1848
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\smss.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1840
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\System32\browseui\conhost.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5020

      Network

            MITRE ATT&CK Enterprise v15

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            Downloads

            RVuqL2qAIw.bat
            • Path C:\Users\Admin\AppData\Local\Temp\RVuqL2qAIw.bat
            • Size 216B
            • SHA256 3d71b33602576440ae08405247fdfcb787c69a67ec98b7dc103a9ab65dd7326d
            • MD5 SHA1 SHA512
            Submit Download

            87tDm8T1lOvAjdSEmWMIMA3JTpcTMB.bat
            • Path C:\Users\Admin\AppData\Roaming\Adobe\87tDm8T1lOvAjdSEmWMIMA3JTpcTMB.bat
            • Size 25B
            • SHA256 75d94792b854edf88578815103ae48089e1cb0566c97c86bc3b3ecf5373778d7
            • MD5 SHA1 SHA512
            Submit Download

            hui.exe
            • Path C:\Users\Admin\AppData\Roaming\Adobe\hui.exe
            • Size 922KB
            • SHA256 3bd60f927e3882940077fa527712e5c55a2767564b39a932c4d4941e190a4c81
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            sN8j8UtUmLUEbzv.vbe
            • Path C:\Users\Admin\AppData\Roaming\Adobe\sN8j8UtUmLUEbzv.vbe
            • Size 219B
            • SHA256 ddbb5359838904c2276556b9e509443ffecba2ef2c15c97370f0a0df01a22a0d
            • MD5 SHA1 SHA512
            Submit Download

            memory/2656-12-0x00007FF865C83000-0x00007FF865C85000-memory.dmp
            Download

            memory/2656-13-0x0000000000200000-0x00000000002EE000-memory.dmp
            Download