Analysis

  • max time kernel
    117s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-11-2024 16:36

General

  • Target

    24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe

  • Size

    775KB

  • MD5

    0ed1f9cb842483e03e36cee538678ffd

  • SHA1

    1d13a84aa671b75f66f4c7fce8339619291d4a43

  • SHA256

    24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc

  • SHA512

    78cb214db0ecbc532a50fc1344a138125e0031485c004e95bc21064165f9fd667fa582cd5196a6e1b4276b6dd7fa1d23dfabfe0c58b0d93fbf8e5329b064a809

  • SSDEEP

    12288:FFg6HIZxWaga+z9e9qJeyLVqlUhqgPXdU2ypi0w8ncqXuvVw4heSNSzLz/:FIrr+h0qJeiqlGVUskcz9w4jI3b

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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files 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 12 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe
    "C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2580
    • C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe
      "C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe"
      2⤵
        PID:2396
      • C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe
        "C:\Users\Admin\AppData\Local\Temp\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe"
        2⤵
        • Checks computer location settings
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1684
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Documents and Settings\unsecapp.exe'" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1564
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "Registry" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\Registry.exe'" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2460
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Documents and Settings\SppExtComObj.exe'" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1644
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-synch-l1-2-0\OfficeClickToRun.exe'" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3124
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\System32\wbem\OfflineFilesConfigurationWmiProvider\WmiPrvSE.exe'" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3384
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\PdezCDEWUv.bat"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1804
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3148
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 5 localhost
            4⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1040
          • C:\Windows\SysWOW64\wbem\OfflineFilesConfigurationWmiProvider\WmiPrvSE.exe
            "C:\Windows\System32\wbem\OfflineFilesConfigurationWmiProvider\WmiPrvSE.exe"
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:4072

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc.exe.log

      Filesize

      1KB

      MD5

      84e77a587d94307c0ac1357eb4d3d46f

      SHA1

      83cc900f9401f43d181207d64c5adba7a85edc1e

      SHA256

      e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

      SHA512

      aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

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

      Filesize

      240B

      MD5

      262fdfb700292b55460943bcf1ab7928

      SHA1

      b48e921acbd3d3f5a20dff045f5a69f25da79eee

      SHA256

      b27ccec49e21adb9bac1df024d6ebb42e22bfe68cf4b4c70b193dfa9e9df3ad4

      SHA512

      7b741d14a48619f4b4090abd6c0d27354a5082c22194eaf4031adf1461b355e61e08bc71ba8b1c0d4709dc5d3cb02f7137238955b13ec5aaf508951f3c95131a

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2y2foofm.e0v.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Windows\SysWOW64\wbem\OfflineFilesConfigurationWmiProvider\WmiPrvSE.exe

      Filesize

      775KB

      MD5

      0ed1f9cb842483e03e36cee538678ffd

      SHA1

      1d13a84aa671b75f66f4c7fce8339619291d4a43

      SHA256

      24f719954fbcfd391426579d7f4965d2771f0d2751bed291e6a8dd26228315cc

      SHA512

      78cb214db0ecbc532a50fc1344a138125e0031485c004e95bc21064165f9fd667fa582cd5196a6e1b4276b6dd7fa1d23dfabfe0c58b0d93fbf8e5329b064a809

    • memory/1684-12-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1684-80-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-64-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-25-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-18-0x00000000056D0000-0x0000000005736000-memory.dmp

      Filesize

      408KB

    • memory/1684-16-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-22-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-38-0x0000000006C30000-0x0000000006C62000-memory.dmp

      Filesize

      200KB

    • memory/2580-63-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-60-0x0000000007C90000-0x0000000007C98000-memory.dmp

      Filesize

      32KB

    • memory/2580-59-0x0000000007CB0000-0x0000000007CCA000-memory.dmp

      Filesize

      104KB

    • memory/2580-17-0x0000000002D10000-0x0000000002D46000-memory.dmp

      Filesize

      216KB

    • memory/2580-58-0x0000000007BB0000-0x0000000007BC4000-memory.dmp

      Filesize

      80KB

    • memory/2580-57-0x0000000007BA0000-0x0000000007BAE000-memory.dmp

      Filesize

      56KB

    • memory/2580-20-0x00000000058A0000-0x0000000005EC8000-memory.dmp

      Filesize

      6.2MB

    • memory/2580-21-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-19-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-24-0x0000000005620000-0x0000000005686000-memory.dmp

      Filesize

      408KB

    • memory/2580-56-0x0000000007B70000-0x0000000007B81000-memory.dmp

      Filesize

      68KB

    • memory/2580-23-0x0000000005580000-0x00000000055A2000-memory.dmp

      Filesize

      136KB

    • memory/2580-55-0x0000000007BF0000-0x0000000007C86000-memory.dmp

      Filesize

      600KB

    • memory/2580-54-0x00000000079F0000-0x00000000079FA000-memory.dmp

      Filesize

      40KB

    • memory/2580-35-0x0000000006010000-0x0000000006364000-memory.dmp

      Filesize

      3.3MB

    • memory/2580-36-0x0000000006660000-0x000000000667E000-memory.dmp

      Filesize

      120KB

    • memory/2580-37-0x0000000006690000-0x00000000066DC000-memory.dmp

      Filesize

      304KB

    • memory/2580-52-0x0000000007FC0000-0x000000000863A000-memory.dmp

      Filesize

      6.5MB

    • memory/2580-39-0x0000000070B60000-0x0000000070BAC000-memory.dmp

      Filesize

      304KB

    • memory/2580-49-0x0000000006C00000-0x0000000006C1E000-memory.dmp

      Filesize

      120KB

    • memory/2580-50-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/2580-51-0x0000000007660000-0x0000000007703000-memory.dmp

      Filesize

      652KB

    • memory/2580-53-0x0000000007970000-0x000000000798A000-memory.dmp

      Filesize

      104KB

    • memory/3964-15-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/3964-5-0x0000000005A50000-0x0000000005A5A000-memory.dmp

      Filesize

      40KB

    • memory/3964-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

      Filesize

      4KB

    • memory/3964-6-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/3964-7-0x0000000005C80000-0x0000000005C8A000-memory.dmp

      Filesize

      40KB

    • memory/3964-8-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

      Filesize

      4KB

    • memory/3964-11-0x0000000005EA0000-0x0000000005F20000-memory.dmp

      Filesize

      512KB

    • memory/3964-9-0x0000000074EE0000-0x0000000075690000-memory.dmp

      Filesize

      7.7MB

    • memory/3964-10-0x0000000001980000-0x0000000001A20000-memory.dmp

      Filesize

      640KB

    • memory/3964-4-0x0000000005B10000-0x0000000005BAC000-memory.dmp

      Filesize

      624KB

    • memory/3964-3-0x0000000005A70000-0x0000000005B02000-memory.dmp

      Filesize

      584KB

    • memory/3964-2-0x0000000005F80000-0x0000000006524000-memory.dmp

      Filesize

      5.6MB

    • memory/3964-1-0x0000000000F90000-0x0000000001054000-memory.dmp

      Filesize

      784KB