Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-12-2024 08:46

General

  • Target

    d19220e738ca3bae030183e83544aebc_JaffaCakes118.exe

  • Size

    2.3MB

  • MD5

    d19220e738ca3bae030183e83544aebc

  • SHA1

    8f6b9a18e180ec012be9d12ddf8c2ab79e1fe990

  • SHA256

    6956fe608e1cbcac4888a11b3a9815451289a38bb3fdb82c29f8f8ad593b209d

  • SHA512

    c493831b0baf1f5d96921ec21ddef85b0e9e45e6ef7ebb5f82fc8da081d3fa6ee6d9fd3efec47be603ff3ae474f9fdabbff1ae530155e715eab588c09f46e980

  • SSDEEP

    49152:PWkv2p8AKHzTc8b6ZgeZ50xGktV/Cg1beUU++JKpqmPfgwvc+XXgGALr28:n2pJ2zIjZg0NkLqk+XSfdvzXXGG8

Malware Config

Signatures

  • DcRat 24 IoCs

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

  • Dcrat family
  • Process spawned unexpected child process 15 IoCs

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

  • DCRat payload 11 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 3 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 15 IoCs
  • Drops file in System32 directory 19 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 40 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\d19220e738ca3bae030183e83544aebc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\d19220e738ca3bae030183e83544aebc_JaffaCakes118.exe"
    1⤵
    • DcRat
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\TmVNgH5KgI.bat"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2636
      • C:\Windows\SysWOW64\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\system32\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          4⤵
            PID:3048
        • C:\Users\Admin\AppData\Local\Temp\d19220e738ca3bae030183e83544aebc_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\d19220e738ca3bae030183e83544aebc_JaffaCakes118.exe"
          3⤵
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Identifies Wine through registry keys
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1392
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\MTYscXymvp.bat"
            4⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2908
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
              • System Location Discovery: System Language Discovery
              PID:3044
            • C:\Windows\SysWOW64\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2912
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                6⤵
                  PID:2900
              • C:\Windows\SysWOW64\C_21025\csrss.exe
                "C:\Windows\System32\C_21025\csrss.exe"
                5⤵
                • Identifies VirtualBox via ACPI registry values (likely anti-VM)
                • Checks BIOS information in registry
                • Executes dropped EXE
                • Identifies Wine through registry keys
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1564
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Default\Desktop\sppsvc.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2644
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\System32\sdchange\lsm.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2136
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\System32\drt\lsm.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2752
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1332
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\devmgr\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2784
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Documents and Settings\OSPPSVC.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2664
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\System32\NlsData0020\wininit.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2860
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2864
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\NlsLexicons0009\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2516
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\System32\hdwwiz\services.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1056
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\C_21025\csrss.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:764
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\System32\wsock32\wininit.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1940
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\KBDTURME\csrss.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1460
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\services.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2896
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\Performance\WinSAT\DataStore\csrss.exe'" /rl HIGHEST /f
        1⤵
        • DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2888

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        213B

        MD5

        b51c5f95da94b89fd41cc45700bf611d

        SHA1

        abfc3670eb6fbb539a2589009ce626fb92fd50f6

        SHA256

        f0d7a3a0e3d241274360330026fbd3889e6b3f8294e47f958bdf6010e164df75

        SHA512

        90a5031ba4fbe857786d4b322ee05db2f7602a4365f1fb9cb4bbc1fe7b87922755aa338355aa112714360611cc4ec2953ff84502ec482e01eac79918d3d8925f

      • C:\Users\Admin\AppData\Local\Temp\TmVNgH5KgI.bat

        Filesize

        260B

        MD5

        fc14516085012e9ca17081ab9699cc32

        SHA1

        7a5497f533b7943d570190c52c0ae95b36523ee0

        SHA256

        50a89572b9b8e85662d9255ec33efbaeca7b0a2a699d017dc7735bbdedbd1de4

        SHA512

        ce40895dc22983a98e73319cb4db7879c0097bb74b14c27a6912adcbfb498a000a021f4721a92b336e2a4eb105936c780f36e49509c3471fa9f446990ced9e11

      • C:\Windows\SysWOW64\devmgr\winlogon.exe

        Filesize

        2.3MB

        MD5

        d19220e738ca3bae030183e83544aebc

        SHA1

        8f6b9a18e180ec012be9d12ddf8c2ab79e1fe990

        SHA256

        6956fe608e1cbcac4888a11b3a9815451289a38bb3fdb82c29f8f8ad593b209d

        SHA512

        c493831b0baf1f5d96921ec21ddef85b0e9e45e6ef7ebb5f82fc8da081d3fa6ee6d9fd3efec47be603ff3ae474f9fdabbff1ae530155e715eab588c09f46e980

      • memory/1392-28-0x0000000000390000-0x0000000000916000-memory.dmp

        Filesize

        5.5MB

      • memory/1392-50-0x0000000000390000-0x0000000000916000-memory.dmp

        Filesize

        5.5MB

      • memory/1392-29-0x0000000000390000-0x0000000000916000-memory.dmp

        Filesize

        5.5MB

      • memory/1392-27-0x0000000000390000-0x0000000000916000-memory.dmp

        Filesize

        5.5MB

      • memory/1564-58-0x0000000000D70000-0x00000000012F6000-memory.dmp

        Filesize

        5.5MB

      • memory/1564-60-0x0000000000B40000-0x0000000000B4A000-memory.dmp

        Filesize

        40KB

      • memory/1564-68-0x0000000000D70000-0x00000000012F6000-memory.dmp

        Filesize

        5.5MB

      • memory/1564-63-0x0000000000D70000-0x00000000012F6000-memory.dmp

        Filesize

        5.5MB

      • memory/1564-61-0x0000000000BE0000-0x0000000000BEC000-memory.dmp

        Filesize

        48KB

      • memory/1564-59-0x0000000000B20000-0x0000000000B2C000-memory.dmp

        Filesize

        48KB

      • memory/1564-56-0x0000000000D70000-0x00000000012F6000-memory.dmp

        Filesize

        5.5MB

      • memory/1564-57-0x0000000000D70000-0x00000000012F6000-memory.dmp

        Filesize

        5.5MB

      • memory/2092-0-0x0000000000370000-0x00000000008F6000-memory.dmp

        Filesize

        5.5MB

      • memory/2092-1-0x0000000000370000-0x00000000008F6000-memory.dmp

        Filesize

        5.5MB

      • memory/2092-2-0x0000000000370000-0x00000000008F6000-memory.dmp

        Filesize

        5.5MB

      • memory/2092-25-0x0000000000370000-0x00000000008F6000-memory.dmp

        Filesize

        5.5MB

      • memory/2564-26-0x0000000002430000-0x00000000029B6000-memory.dmp

        Filesize

        5.5MB

      • memory/2908-54-0x0000000002320000-0x00000000028A6000-memory.dmp

        Filesize

        5.5MB