Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 6 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 22 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 6 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⤵
    • 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:3068
    • 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:2760
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2664
    • 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:2672
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2784
    • 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:2824
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2820
    • C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
      "C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
      2⤵
      • Loads dropped DLL
      • 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:2584
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\en-US\services.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2140
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\OSPPSVC.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2056
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "System" /sc ONLOGON /tr "'C:\Users\Public\Music\Sample Music\System.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2300
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\System\WmiPrvSE.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1652
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\en-US\WmiPrvSE.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:568
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Windows\Performance\WinSAT\DataStore\OSPPSVC.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1948
      • C:\Windows\Performance\WinSAT\DataStore\OSPPSVC.exe
        "C:\Windows\Performance\WinSAT\DataStore\OSPPSVC.exe"
        3⤵
        • 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:1212
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:476
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:1096
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:532
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2248
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2288
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2136
        • C:\Windows\Performance\WinSAT\DataStore\OSPPSVC.exe
          "C:\Windows\Performance\WinSAT\DataStore\OSPPSVC.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2172

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\en-US\WmiPrvSE.exe

    Filesize

    9.4MB

    MD5

    813b749967045532f86e6442447bcd8b

    SHA1

    8d0615e7f7ba672a3fc94c05a9451f9d08797af7

    SHA256

    0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464

    SHA512

    47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877

  • memory/1212-70-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-71-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-57-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-83-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-59-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-60-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-84-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-61-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-62-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-63-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-64-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-66-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-67-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-68-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-40-0x0000000000AE0000-0x000000000143C000-memory.dmp

    Filesize

    9.4MB

  • memory/1212-69-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-56-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-78-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-85-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-90-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-89-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-88-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-87-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-86-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-91-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-72-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-58-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-82-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-81-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-80-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-79-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-77-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-76-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-75-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-74-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1212-73-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2172-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2584-15-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-10-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-8-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-4-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-18-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-6-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2584-16-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-12-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/3068-0-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

    Filesize

    4KB

  • memory/3068-19-0x0000000073D10000-0x00000000743FE000-memory.dmp

    Filesize

    6.9MB

  • memory/3068-2-0x00000000067E0000-0x0000000006926000-memory.dmp

    Filesize

    1.3MB

  • memory/3068-1-0x0000000001050000-0x00000000019AC000-memory.dmp

    Filesize

    9.4MB

  • memory/3068-3-0x0000000073D10000-0x00000000743FE000-memory.dmp

    Filesize

    6.9MB