Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 04:03

General

  • Target

    0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe

  • Size

    9.4MB

  • MD5

    813b749967045532f86e6442447bcd8b

  • SHA1

    8d0615e7f7ba672a3fc94c05a9451f9d08797af7

  • SHA256

    0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464

  • SHA512

    47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877

  • SSDEEP

    24576:GYx7SFGwWG8/Ad5kybgeK8uQY2ZqR7NlaDbTxnVhv2MMLdGIhJ:IFFbK8q2ZhDbTNv2MuV

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • DCRat payload 1 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 25 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 25 IoCs

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

  • Delays execution with timeout.exe 6 IoCs
  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
    "C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3088
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2704
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4132
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2216
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:372
    • C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
      "C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
      2⤵
      • 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:1572
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\lib\services.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2372
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Roaming\Microsoft\Protect\S-1-5-21-2437139445-1151884604-3026847218-1000\dllhost.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3784
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2852
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Registry" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1408
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\ja\fontdrvhost.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2956
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "sihost" /sc ONLOGON /tr "'C:\Windows\it-IT\sihost.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2656
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\uninstall\services.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2528
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\PerfLogs\WmiPrvSE.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:212
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4052
      • C:\Recovery\WindowsRE\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
        "C:\Recovery\WindowsRE\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:636
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2588
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:4372
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2992
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2380
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4012
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:1500
        • C:\Recovery\WindowsRE\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
          "C:\Recovery\WindowsRE\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4984
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 876
          4⤵
          • Program crash
          PID:3720
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2544 -s 1500
      2⤵
      • Program crash
      PID:3720
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2544 -ip 2544
    1⤵
      PID:584
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 636 -ip 636
      1⤵
        PID:2408

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\ja\fontdrvhost.exe

        Filesize

        9.4MB

        MD5

        813b749967045532f86e6442447bcd8b

        SHA1

        8d0615e7f7ba672a3fc94c05a9451f9d08797af7

        SHA256

        0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464

        SHA512

        47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe.log

        Filesize

        1KB

        MD5

        f3bfc02ce6af9df415d3a7582b4b7bb1

        SHA1

        a47b22d560e1bcc3f5f3048b7727aa36c6459a56

        SHA256

        eb536b383e1132aa536f8c4ee4a1615dffb1d997498f467cb295525f8677b1b7

        SHA512

        5e12b008241e114972b3ea6b774096a13b81cb104fb44f78f77df9897dc1e2ffa7da35beef32f1ba62ca3f547d7432078bfab133d7fc753e747591dcb0ea294b

      • memory/1572-6-0x0000000000400000-0x0000000000538000-memory.dmp

        Filesize

        1.2MB

      • memory/1572-7-0x0000000005D10000-0x0000000005D76000-memory.dmp

        Filesize

        408KB

      • memory/1572-9-0x0000000006B00000-0x0000000006B92000-memory.dmp

        Filesize

        584KB

      • memory/2544-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

        Filesize

        4KB

      • memory/2544-1-0x00000000008D0000-0x000000000122C000-memory.dmp

        Filesize

        9.4MB

      • memory/2544-2-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

        Filesize

        624KB

      • memory/2544-3-0x00000000080F0000-0x0000000008236000-memory.dmp

        Filesize

        1.3MB

      • memory/2544-4-0x0000000074D50000-0x0000000075500000-memory.dmp

        Filesize

        7.7MB

      • memory/2544-5-0x000000000B6A0000-0x000000000BC44000-memory.dmp

        Filesize

        5.6MB

      • memory/2544-8-0x0000000074D50000-0x0000000075500000-memory.dmp

        Filesize

        7.7MB