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Analysis

  • max time kernel
    137s
  • max time network
    151s
  • 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, 18:30

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.

  • 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 4 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 2 IoCs
  • Modifies registry key 1 TTPs 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 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:1440
    • 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:3524
      • 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:1260
        • 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:1600
        • C:\webHostnet\MsPortSavesruntime.exe
          "C:\webHostnet/MsPortSavesruntime.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1640
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\All Users\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\csrss.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:4208
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Mail\sihost.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:4400
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\spoolsv.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3776
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\MsPortSavesruntime.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3420
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\fontdrvhost.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3460
          • 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:2288
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\YjupFJ3kSy.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3824
            • C:\Windows\system32\chcp.com
              chcp 65001
              6⤵
                PID:1008
              • C:\Windows\system32\PING.EXE
                ping -n 10 localhost
                6⤵
                • System Network Configuration Discovery: Internet Connection Discovery
                • Runs ping.exe
                PID:404
              • C:\webHostnet\MsPortSavesruntime.exe
                "C:\webHostnet\MsPortSavesruntime.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:3564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Mail\sihost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3132
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4352
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Mail\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3080
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\webHostnet\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\webHostnet\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1320
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\webHostnet\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\MsPortSavesruntime.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3508
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntime" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\MsPortSavesruntime.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2080
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\MsPortSavesruntime.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4288
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3688
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4344
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 6 /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3680
    • 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:404
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 5 /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2392

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      1KB

      MD5

      cb4338b342d00bfe6111ffee5cbfc2ed

      SHA1

      fc16673b6833ad3cb00743a32868b859e90aa536

      SHA256

      343ed6661687e81c9615dcaea42fb1a98b70572bb9fe07e16f020108725dbbe9

      SHA512

      4bcea1366b8be00d08eb15cfd78c87e1c8f3aea140a4ea30efb3c0511cd3de21b7ce8c933c7478fb06a356573ecb928e50df23d340fbd9a6e6c156a004d2a77a

    • 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

      d28a889fd956d5cb3accfbaf1143eb6f

      SHA1

      157ba54b365341f8ff06707d996b3635da8446f7

      SHA256

      21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

      SHA512

      0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

    • 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\Temp\YjupFJ3kSy.bat

      Filesize

      164B

      MD5

      c96acf4e082928ff11d015ffc3fdf73d

      SHA1

      deb8378fd41d4bb29542bd1299a0319ff23b4ed8

      SHA256

      5daf804785624f8d5231ff66ca2e0b9c8e62b3440600e45d8bb30476d01423f6

      SHA512

      741fea0fdc6a34ccd123c98cc73cb0e4ae9bc09cd54843161338cdb113537aea77424644492352faff1960e0468a0da8ba08a5379e6428d7ba6e32a223cc8c11

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mnv3yd0m.adm.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/1640-14-0x0000000002710000-0x000000000271E000-memory.dmp

      Filesize

      56KB

    • memory/1640-23-0x000000001B050000-0x000000001B05C000-memory.dmp

      Filesize

      48KB

    • memory/1640-21-0x000000001B040000-0x000000001B048000-memory.dmp

      Filesize

      32KB

    • memory/1640-19-0x000000001B080000-0x000000001B098000-memory.dmp

      Filesize

      96KB

    • memory/1640-17-0x000000001B0D0000-0x000000001B120000-memory.dmp

      Filesize

      320KB

    • memory/1640-16-0x000000001B060000-0x000000001B07C000-memory.dmp

      Filesize

      112KB

    • memory/1640-12-0x0000000000360000-0x000000000053E000-memory.dmp

      Filesize

      1.9MB

    • memory/3776-46-0x00000228837F0000-0x0000022883812000-memory.dmp

      Filesize

      136KB