Analysis

  • max time kernel
    95s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2024 22:23

General

  • Target

    e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe

  • Size

    1.8MB

  • MD5

    382eaedc34bfc15b7e749fb8a0cff600

  • SHA1

    d8729997725a187120ee95e1d6068586a13ab678

  • SHA256

    e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a

  • SHA512

    f2be10566728f10a1396abf3115a01d98a5b06d18b94e84ecb6fbb012f1ad3ad588be84f09ceafa55bc9fd65a7e6763c68ca67596141c750ae54a2bebfc5c16b

  • SSDEEP

    24576:nfNh6iTrBgSq+kdkpupwocpF4jGdWWfWanontd7ksYKtAwqgKchGGqGLk6kIv/D5:f3/kGAwaCYO4ngs7wg8UkcX

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 12 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 8 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 24 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\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe
    "C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\it4l4fux\it4l4fux.cmdline"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESAA1B.tmp" "c:\Windows\System32\CSC84E4B9A20DF4AEB9B8A32ADDD997B6E.TMP"
        3⤵
          PID:1720
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Java\jdk-1.8\SppExtComObj.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:1564
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Microsoft Office\PackageManifests\RuntimeBroker.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2996
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\BitLockerDiscoveryVolumeContents\unsecapp.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4500
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\LiveKernelReports\smss.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2464
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\SKB\LanguageModels\sysmon.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:3068
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2312
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\pjhAmlyPTC.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1004
        • C:\Windows\system32\chcp.com
          chcp 65001
          3⤵
            PID:5028
          • C:\Windows\system32\PING.EXE
            ping -n 10 localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1404
          • C:\Program Files\Java\jdk-1.8\SppExtComObj.exe
            "C:\Program Files\Java\jdk-1.8\SppExtComObj.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            PID:4492
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 10 /tr "'C:\Program Files\Java\jdk-1.8\SppExtComObj.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1560
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3104
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Program Files\Java\jdk-1.8\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1552
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Microsoft Office\PackageManifests\RuntimeBroker.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:436
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\PackageManifests\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1128
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Program Files\Microsoft Office\PackageManifests\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3208
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 10 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\unsecapp.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2224
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\unsecapp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4656
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 12 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\unsecapp.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3452
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Windows\LiveKernelReports\smss.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3248
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\smss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2528
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Windows\LiveKernelReports\smss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4520
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Windows\SKB\LanguageModels\sysmon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3456
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\SKB\LanguageModels\sysmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4628
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Windows\SKB\LanguageModels\sysmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5108
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aNe" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3124
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1780
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aNe" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847aN.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1836

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Java\jdk-1.8\SppExtComObj.exe

        Filesize

        1.8MB

        MD5

        382eaedc34bfc15b7e749fb8a0cff600

        SHA1

        d8729997725a187120ee95e1d6068586a13ab678

        SHA256

        e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a

        SHA512

        f2be10566728f10a1396abf3115a01d98a5b06d18b94e84ecb6fbb012f1ad3ad588be84f09ceafa55bc9fd65a7e6763c68ca67596141c750ae54a2bebfc5c16b

      • 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

        77d622bb1a5b250869a3238b9bc1402b

        SHA1

        d47f4003c2554b9dfc4c16f22460b331886b191b

        SHA256

        f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

        SHA512

        d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

      • 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

        62623d22bd9e037191765d5083ce16a3

        SHA1

        4a07da6872672f715a4780513d95ed8ddeefd259

        SHA256

        95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

        SHA512

        9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

        Filesize

        944B

        MD5

        59d97011e091004eaffb9816aa0b9abd

        SHA1

        1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

        SHA256

        18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

        SHA512

        d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

      • C:\Users\Admin\AppData\Local\Temp\RESAA1B.tmp

        Filesize

        1KB

        MD5

        e8e319211008785dbbcf83334a05a750

        SHA1

        2d68c896cca3dbde1e9dc21cc5327bd5edcc7cb3

        SHA256

        266ef2e399fb56d15e26f0d79017d33bc65a98eda9becbadca38febfaadc6a6d

        SHA512

        5b5b092e5a7bc362afd9d1a71db11487b8ab28e60c725cda73bc2cc30c601413639cbc397d8f6b234c44456112a42a30b93b3a1a3de60e21c90aa1fa2b22498f

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rbacbbbb.uwm.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

        Filesize

        174B

        MD5

        3556e295f77a9d27a3fd06c60b7706df

        SHA1

        2b19744366679e82a43c5bac64b119d5009584f7

        SHA256

        3cb37836eca52d9122699830f991d376798d7b91f33fcf6bfb66a7bcc9506912

        SHA512

        365ec7e970b3ac778e03737b5ad5704ba5d0308eed82c1ee50f967945dab2151d1b4d0f523982ffa1a6ef5f7d06e30e0de9bf263bf0ae29f0e3f5196604e23ab

      • \??\c:\Users\Admin\AppData\Local\Temp\it4l4fux\it4l4fux.0.cs

        Filesize

        378B

        MD5

        8b5f7afa91daaba94bbe4c320c8a0e59

        SHA1

        e5cd1fd3bba6e1c9c21353a5e573f959ae86306d

        SHA256

        971adf1cdc35798b98b2c6852b7ca64fe17e1370211b56f27691172eba91e0fc

        SHA512

        e55fe19b02ea84f654f92dbfcd74e5b5e444d605e72a7be4aedf4ed7e32105c01cc783de317638dfa7e927d3f7e2f3689c21f6ad17b0d4280054d54dea0885d3

      • \??\c:\Users\Admin\AppData\Local\Temp\it4l4fux\it4l4fux.cmdline

        Filesize

        235B

        MD5

        0dfaff91c275856481336bdcdc99b110

        SHA1

        3a969ebe8fc24954f05f06054a1471f403bdf779

        SHA256

        ee3f17b0c537fed94aba6f74d30011e733717bcacbd253b67829c9384ade462f

        SHA512

        dba9aa6ed129fa221c2d155e7164d28e75daaa75992c6235583bce2fb9eb601898848a7cb578f35240cb270793847f142f98ab5fc7bf83f942b047848d022878

      • \??\c:\Windows\System32\CSC84E4B9A20DF4AEB9B8A32ADDD997B6E.TMP

        Filesize

        1KB

        MD5

        034b083b6729ade0b138a24cbdd66c6d

        SHA1

        299c5a9dd91498cfc4226a5fe6d52ea633c2d148

        SHA256

        8e3aa7a68c0bfea6cae11fe40e79aa1483bc2e43c4c3fd11fcebca1f7bcea0d2

        SHA512

        43f68ec3211f2d1eb3a095713b3988a5b45a6fb03136876431edd3b25b628f904079557cbb60d0107c0444551db274c8e6817d63a543e8a7e390206af64d1cc3

      • memory/1616-18-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-49-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-0-0x00007FF81EA33000-0x00007FF81EA35000-memory.dmp

        Filesize

        8KB

      • memory/1616-22-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-17-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-16-0x0000000002740000-0x000000000274C000-memory.dmp

        Filesize

        48KB

      • memory/1616-12-0x000000001B660000-0x000000001B6B0000-memory.dmp

        Filesize

        320KB

      • memory/1616-11-0x00000000028C0000-0x00000000028DC000-memory.dmp

        Filesize

        112KB

      • memory/1616-46-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-14-0x00000000028E0000-0x00000000028F8000-memory.dmp

        Filesize

        96KB

      • memory/1616-9-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-1-0x0000000000490000-0x000000000066A000-memory.dmp

        Filesize

        1.9MB

      • memory/1616-8-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-7-0x0000000000F40000-0x0000000000F4E000-memory.dmp

        Filesize

        56KB

      • memory/1616-5-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-4-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-3-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1616-2-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

        Filesize

        10.8MB

      • memory/2464-59-0x00000262E8680000-0x00000262E86A2000-memory.dmp

        Filesize

        136KB