Resubmissions

21-08-2024 19:30

240821-x76q3sweqg 10

21-08-2024 17:42

240821-v92h2avgpj 10

12-06-2024 16:01

240612-tgps4a1bqh 10

Analysis

  • max time kernel
    1556s
  • max time network
    1557s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    21-08-2024 17:42

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 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 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 20 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 4 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:2652
    • 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:1568
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2408
    • 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:1972
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2284
    • 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:2676
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2772
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2776
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\5ba42562-3a8b-11ef-9d17-d685e2345d05\csrss.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2788
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Idle" /sc ONLOGON /tr "'C:\PerfLogs\Admin\Idle.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2880
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "lsass" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\lsass.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2596
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\lsass.exe'" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2704
      • C:\Program Files\Uninstall Information\lsass.exe
        "C:\Program Files\Uninstall Information\lsass.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:2844
        • 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:2116
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:820
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1980
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:1988
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1956
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2316
        • C:\Program Files\Uninstall Information\lsass.exe
          "C:\Program Files\Uninstall Information\lsass.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Program Files\Uninstall Information\lsass.exe

    Filesize

    9.4MB

    MD5

    813b749967045532f86e6442447bcd8b

    SHA1

    8d0615e7f7ba672a3fc94c05a9451f9d08797af7

    SHA256

    0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464

    SHA512

    47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877

  • memory/1912-608-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2652-1-0x0000000000EF0000-0x000000000184C000-memory.dmp

    Filesize

    9.4MB

  • memory/2652-2-0x00000000068F0000-0x0000000006A36000-memory.dmp

    Filesize

    1.3MB

  • memory/2652-3-0x0000000073EE0000-0x00000000745CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2652-0-0x0000000073EEE000-0x0000000073EEF000-memory.dmp

    Filesize

    4KB

  • memory/2652-580-0x0000000073EE0000-0x00000000745CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2776-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2776-15-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-10-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-8-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-6-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-13-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-16-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-17-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-4-0x0000000000400000-0x0000000000538000-memory.dmp

    Filesize

    1.2MB

  • memory/2844-621-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-646-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-611-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-615-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-614-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-617-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-616-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-619-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-618-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-620-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-597-0x0000000000960000-0x00000000012BC000-memory.dmp

    Filesize

    9.4MB

  • memory/2844-623-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-622-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-624-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-626-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-625-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-627-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-648-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-647-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-633-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-645-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-644-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-643-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-642-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-641-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-640-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-639-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-638-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-637-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-636-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-635-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-634-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-632-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-631-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-630-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-629-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB

  • memory/2844-628-0x0000000000350000-0x0000000000450000-memory.dmp

    Filesize

    1024KB