Analysis

  • max time kernel
    121s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    10-01-2025 09:54

General

  • Target

    JaffaCakes118_e15640ee50e585dc2d22e8034af222cb.exe

  • Size

    2.3MB

  • MD5

    e15640ee50e585dc2d22e8034af222cb

  • SHA1

    ae603bf050d70b779414bf2860ed6874fadecdeb

  • SHA256

    046bf975b725c82f7bb4b76cca785b0fb740b9d006c660cd96bc6ce7b70287d1

  • SHA512

    cac1d6eee85eebce728be7038cfffb2fc020013b425bd1413924ebe712b51ab02faa6be2d077a35b106a563bf9b1aecbd53b60604d2c6bb614b089399cb4ce38

  • SSDEEP

    12288:5qnODPqBVA4VzeVeMvmw2b2iaNn0f7IF45i5ZwMr+FngnRtyS37WfGSindZTJiC6:5+O4GJvx75OgnRUSLHdFNz5kfe5f

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Modifies WinLogon for persistence 2 TTPs 9 IoCs
  • Process spawned unexpected child process 9 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 18 IoCs
  • Drops file in System32 directory 11 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 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\JaffaCakes118_e15640ee50e585dc2d22e8034af222cb.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e15640ee50e585dc2d22e8034af222cb.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e15640ee50e585dc2d22e8034af222cb.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e15640ee50e585dc2d22e8034af222cb.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Adds Run key to start application
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\txN4VO9PZe.bat"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1048
        • C:\Windows\system32\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          4⤵
            PID:944
          • C:\Windows\System32\quser\csrss.exe
            "C:\Windows\System32\quser\csrss.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:236
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\AppCompat\Programs\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2764
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\System32\hidphone\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2124
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Documents and Settings\wininit.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 "wininit" /sc ONLOGON /tr "'C:\Windows\System32\hcproviders\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2404
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\XInput9_1_0\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2228
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\quser\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1300
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\perfh007\lsass.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 "wininit" /sc ONLOGON /tr "'C:\PerfLogs\Admin\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1720
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1740

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\txN4VO9PZe.bat

      Filesize

      199B

      MD5

      6192d61bf0da59b94a6c53aa064f476f

      SHA1

      62a1b041ac2e0ec1d49d1e605a53e80a99462ebb

      SHA256

      e9fc9d1edd929f50e15fa012d42ec78fb50233688d457f560af6d6fe6f257a1c

      SHA512

      33dca49d4725421301aa810becc295c4766ce063a71a57f139a299921d639f817eeed758b62163852fb3afd02c61d3729f25168c1f9229b78cd4bf8c7bcf62d9

    • C:\Windows\System32\XInput9_1_0\spoolsv.exe

      Filesize

      2.3MB

      MD5

      e15640ee50e585dc2d22e8034af222cb

      SHA1

      ae603bf050d70b779414bf2860ed6874fadecdeb

      SHA256

      046bf975b725c82f7bb4b76cca785b0fb740b9d006c660cd96bc6ce7b70287d1

      SHA512

      cac1d6eee85eebce728be7038cfffb2fc020013b425bd1413924ebe712b51ab02faa6be2d077a35b106a563bf9b1aecbd53b60604d2c6bb614b089399cb4ce38

    • memory/236-29-0x0000000001310000-0x0000000001564000-memory.dmp

      Filesize

      2.3MB

    • memory/236-30-0x00000000003D0000-0x00000000003DC000-memory.dmp

      Filesize

      48KB

    • memory/236-31-0x00000000003E0000-0x00000000003EC000-memory.dmp

      Filesize

      48KB

    • memory/236-32-0x00000000004A0000-0x00000000004AC000-memory.dmp

      Filesize

      48KB

    • memory/236-33-0x0000000000480000-0x0000000000488000-memory.dmp

      Filesize

      32KB

    • memory/236-34-0x00000000004E0000-0x00000000004EA000-memory.dmp

      Filesize

      40KB

    • memory/1664-0-0x000007FEF5EF3000-0x000007FEF5EF4000-memory.dmp

      Filesize

      4KB

    • memory/1664-1-0x0000000000130000-0x0000000000384000-memory.dmp

      Filesize

      2.3MB

    • memory/1664-2-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

      Filesize

      9.9MB

    • memory/1664-11-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

      Filesize

      9.9MB