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Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/10/2024, 18:21

General

  • Target

    7471eb468a1f0166167f369bec578915.exe

  • Size

    2.2MB

  • MD5

    7471eb468a1f0166167f369bec578915

  • SHA1

    9ded35e930d112a8909dad6aaf1a657f65284588

  • SHA256

    9e52adafb9ddb7668e8c025ebd74a856434b0c4c487a6204fe750e683bc3dbe4

  • SHA512

    3f4abc590644d80a6fdebca9e0d2e1a28bbe220a2f48affa09707d9eaa0ab08077dfec58d6f3b78483459dd143cabd1c38ce3941f5766f06e0f1649b705078f8

  • SSDEEP

    49152:IBTj8WeJJUFAFQGoAgNCw0J1/XfkP/qcdi:yf8W7W8AtX83qcdi

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Process spawned unexpected child process 18 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Modifies registry class 2 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 31 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\7471eb468a1f0166167f369bec578915.exe
    "C:\Users\Admin\AppData\Local\Temp\7471eb468a1f0166167f369bec578915.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\webHostnet\zwQVFWlQFNPt4NETL.vbe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2920
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\webHostnet\pKNW0LLPvws3GwQKOkochIXVKV43j60Eam3t2s1RnAC4qUIE4HMFCa.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5056
        • C:\Windows\SysWOW64\reg.exe
          reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:2736
        • C:\webHostnet\MsPortSavesruntime.exe
          "C:\webHostnet/MsPortSavesruntime.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:5100
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\dwm.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3192
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\Favorites\Links\OfficeClickToRun.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2436
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Music\sysmon.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:4456
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\System.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3636
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\Registry.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:4684
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\MsPortSavesruntime.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:724
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\BQPl3kxtm0.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:5016
            • C:\Windows\system32\chcp.com
              chcp 65001
              6⤵
                PID:4044
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                6⤵
                  PID:4448
                • C:\webHostnet\Registry.exe
                  "C:\webHostnet\Registry.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious behavior: GetForegroundWindowSpam
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1400
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\webHostnet\dwm.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:224
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\webHostnet\dwm.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4764
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\webHostnet\dwm.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4604
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Favorites\Links\OfficeClickToRun.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:624
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Users\Admin\Favorites\Links\OfficeClickToRun.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2028
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\Favorites\Links\OfficeClickToRun.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5036
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\Users\Public\Music\sysmon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2012
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Users\Public\Music\sysmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4332
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Music\sysmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4324
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\webHostnet\System.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4268
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\webHostnet\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2264
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\webHostnet\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3528
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\webHostnet\Registry.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:704
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\webHostnet\Registry.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1940
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\webHostnet\Registry.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5028
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 13 /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4336
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsPortSavesruntime" /sc ONLOGON /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3500
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 8 /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1220

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        944B

        MD5

        6d3e9c29fe44e90aae6ed30ccf799ca8

        SHA1

        c7974ef72264bbdf13a2793ccf1aed11bc565dce

        SHA256

        2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

        SHA512

        60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        944B

        MD5

        cadef9abd087803c630df65264a6c81c

        SHA1

        babbf3636c347c8727c35f3eef2ee643dbcc4bd2

        SHA256

        cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

        SHA512

        7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        944B

        MD5

        d28a889fd956d5cb3accfbaf1143eb6f

        SHA1

        157ba54b365341f8ff06707d996b3635da8446f7

        SHA256

        21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

        SHA512

        0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

      • C:\Users\Admin\AppData\Local\Temp\BQPl3kxtm0.bat

        Filesize

        202B

        MD5

        fc7507b3b7d73216fe267eefee9fc5f5

        SHA1

        033b7bcef6bfdf4a5580ab86465ea0120cc18d98

        SHA256

        608e269f4b9935e719d860e3ac14133a731c925eccd68685ba571789f306fa8e

        SHA512

        853dc918694ada1a48af211bf531e180769c4380d80e0574cc0fe084bf2774d2fb744d71f83f709a9c3d77aa7ee30661fa0c6a57536e74f3d1b70c90d56d978e

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o1o0pggm.2zd.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\webHostnet\MsPortSavesruntime.exe

        Filesize

        1.8MB

        MD5

        4f593957ff5a8313dc52738f85592cba

        SHA1

        dc5e3e8f14b9c6e6541947e55b195b8efebf22d7

        SHA256

        1d85033f5c6bc5927cb48364f91d455f2263dff76505d9849e5e4958cb6c173f

        SHA512

        0e4c741ba7fd0e99e504606000e2190b6c9afcb4349f80c6610da2f974c8a466fd9c22df000b65d46af72c4970e826ed77533fe2307270a70a044b36aeb1814a

      • C:\webHostnet\pKNW0LLPvws3GwQKOkochIXVKV43j60Eam3t2s1RnAC4qUIE4HMFCa.bat

        Filesize

        197B

        MD5

        c68424d522237cf78aa4511e34e7abda

        SHA1

        0e6bd31ac5c94b2f7baf9952e722181746327f20

        SHA256

        52ca02fb677cf28f98813c29dbce9d521a3257006de1289538b313ac34cbab58

        SHA512

        5487e35a5f98d224311997e7906d999c0a496aff5ec0a2c364566bef64d16e2f79bec2a06558363d337453b9da5734deab157ca20868b02bfb22933c1f1e5791

      • C:\webHostnet\zwQVFWlQFNPt4NETL.vbe

        Filesize

        243B

        MD5

        c502f6060bf849e72ab58258f8b8bcf2

        SHA1

        728683a638d413ac1706bb139e6d3a8b54ef5431

        SHA256

        485dfcfe33027d5023830e32ac17f0ebbc36048efcc48db58fe10fe1d4cc341e

        SHA512

        ea6563d1338e382e6109df8f16e0f67a6355ac766786f86d2fa011bdb274da2ed7dafca508fb6cade0e6725d6bda37166cdff4805def1bcb1c82bf0e9a9bb63e

      • memory/3192-45-0x0000019356A70000-0x0000019356A92000-memory.dmp

        Filesize

        136KB

      • memory/5100-14-0x00000000027E0000-0x00000000027EE000-memory.dmp

        Filesize

        56KB

      • memory/5100-23-0x0000000002850000-0x000000000285C000-memory.dmp

        Filesize

        48KB

      • memory/5100-21-0x00000000027F0000-0x00000000027F8000-memory.dmp

        Filesize

        32KB

      • memory/5100-19-0x000000001B1C0000-0x000000001B1D8000-memory.dmp

        Filesize

        96KB

      • memory/5100-17-0x000000001BF20000-0x000000001BF70000-memory.dmp

        Filesize

        320KB

      • memory/5100-16-0x000000001B1A0000-0x000000001B1BC000-memory.dmp

        Filesize

        112KB

      • memory/5100-12-0x0000000000480000-0x000000000065E000-memory.dmp

        Filesize

        1.9MB