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Analysis

  • max time kernel
    122s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 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 3 IoCs

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

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 1 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 key 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 2 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 46 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\webHostnet\zwQVFWlQFNPt4NETL.vbe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2476
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\webHostnet\pKNW0LLPvws3GwQKOkochIXVKV43j60Eam3t2s1RnAC4qUIE4HMFCa.bat" "
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3012
        • 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:2824
        • C:\webHostnet\MsPortSavesruntime.exe
          "C:\webHostnet/MsPortSavesruntime.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1056
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\wininit.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2264
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\WmiPrvSE.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2160
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\webHostnet\dllhost.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1944
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Uninstall Information\wininit.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1188
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Mozilla Firefox\defaults\pref\csrss.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1088
          • 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:1308
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Yi33wEo6XF.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1772
            • C:\Windows\system32\chcp.com
              chcp 65001
              6⤵
                PID:1848
              • C:\Windows\system32\PING.EXE
                ping -n 10 localhost
                6⤵
                • System Network Configuration Discovery: Internet Connection Discovery
                • Runs ping.exe
                PID:1612
              • C:\MSOCache\All Users\wininit.exe
                "C:\MSOCache\All Users\wininit.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:2912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2316
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1684
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1616
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2700
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2936
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\webHostnet\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2960
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\webHostnet\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2568
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\webHostnet\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1956
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Uninstall Information\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1932
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1428
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Uninstall Information\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2560
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:352
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2596
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MsPortSavesruntimeM" /sc MINUTE /mo 9 /tr "'C:\webHostnet\MsPortSavesruntime.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:528
    • 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:376
    • 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:848

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Yi33wEo6XF.bat

      Filesize

      161B

      MD5

      ea38f438a3f8d5a675a50bcf3d824533

      SHA1

      7e3854e889afd443dfb105213333a1776626bd63

      SHA256

      04c01f362dc4fbedad126399c37bec5c347b78929c7a87bac9f671dfb1195a62

      SHA512

      e0f86e0d26fb533da67d86c1f984db526799df22c76979291d4bf6093331be8859a794dbd52127a643c7d89a6d7cdce5f9c88b237ba23cb17a26582193a0120b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

      Filesize

      7KB

      MD5

      97ef6d7ede5830cff49b93a980221ac5

      SHA1

      59f8107f5ec8bcac06e4bd3478e4d08bbaf36c77

      SHA256

      0c18f2722bee39a0cb6844d8b05c2d0be2a81e56de64111c6ec31bee72c11027

      SHA512

      3190d28789540fea0988deda1f46599ed64b06364fcbdd8895cfd6924872b4582ec06438672317d137742f10d34fe144e7c924ebefd38aa2cce743481bacbb0b

    • 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

    • \webHostnet\MsPortSavesruntime.exe

      Filesize

      1.8MB

      MD5

      4f593957ff5a8313dc52738f85592cba

      SHA1

      dc5e3e8f14b9c6e6541947e55b195b8efebf22d7

      SHA256

      1d85033f5c6bc5927cb48364f91d455f2263dff76505d9849e5e4958cb6c173f

      SHA512

      0e4c741ba7fd0e99e504606000e2190b6c9afcb4349f80c6610da2f974c8a466fd9c22df000b65d46af72c4970e826ed77533fe2307270a70a044b36aeb1814a

    • memory/1056-19-0x0000000000460000-0x0000000000478000-memory.dmp

      Filesize

      96KB

    • memory/1056-17-0x00000000003C0000-0x00000000003DC000-memory.dmp

      Filesize

      112KB

    • memory/1056-21-0x00000000003A0000-0x00000000003A8000-memory.dmp

      Filesize

      32KB

    • memory/1056-23-0x00000000003B0000-0x00000000003BC000-memory.dmp

      Filesize

      48KB

    • memory/1056-15-0x0000000000390000-0x000000000039E000-memory.dmp

      Filesize

      56KB

    • memory/1056-13-0x0000000000B40000-0x0000000000D1E000-memory.dmp

      Filesize

      1.9MB

    • memory/2160-55-0x0000000001E00000-0x0000000001E08000-memory.dmp

      Filesize

      32KB

    • memory/2264-54-0x000000001B600000-0x000000001B8E2000-memory.dmp

      Filesize

      2.9MB

    • memory/2912-73-0x0000000000360000-0x000000000053E000-memory.dmp

      Filesize

      1.9MB