Analysis

  • max time kernel
    117s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2024 18:34

General

  • Target

    518d45fbe54aa405bf607284aca5e8c82e77d71d0af7ded560085fc4cd955e10.exe

  • Size

    1.9MB

  • MD5

    0765641fdc0927089f66a0414361e75f

  • SHA1

    b85dde760319d8acf68d19311841ad545a1964ea

  • SHA256

    518d45fbe54aa405bf607284aca5e8c82e77d71d0af7ded560085fc4cd955e10

  • SHA512

    ec58a57003b5ac73588619e4c4e894fbf654deded88757483949cc07391a09fa55c1c34c989a18c541c37661a927b90213e7955892f0d9880ca6f44067234b38

  • SSDEEP

    49152:OB8cGLS7ffV/Vzxxlz58rJvfDddD5oLiVysr:QULwfZptzKFHD5ovsr

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 18 IoCs

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

  • 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 2 IoCs

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

  • Drops file in Program Files directory 7 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 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 20 IoCs
  • Suspicious use of WriteProcessMemory 64 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\518d45fbe54aa405bf607284aca5e8c82e77d71d0af7ded560085fc4cd955e10.exe
    "C:\Users\Admin\AppData\Local\Temp\518d45fbe54aa405bf607284aca5e8c82e77d71d0af7ded560085fc4cd955e10.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\pl9xeMo94WjXLJpWDpGYGGDiS01KZtVSwJMEdv3jLCZMJWaQ84V863B.vbe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2636
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\TiuHlu4XhcAKoMZ02aF6pXhDoyLIxrmaBsj4qsAm38j7SD.bat" "
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2832
        • C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\WinRAR.exe
          "C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850/Boot/Resources/root/bin/cache/WinRAR/tmp37171.WMC/data/winrar-x64-701/WinRAR.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2128
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
            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:/$Recycle.Bin/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2156
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2200
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/MSOCache/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2192
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2392
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2204
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:3008
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1488
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2044
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1616
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2248
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1664
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default\Music\spoolsv.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1128
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\Packages\Debugger\taskhost.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:832
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\twain_32\csrss.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1356
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Microsoft Office\Office14\1033\Idle.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1596
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows NT\Accessories\fr-FR\lsass.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:2424
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\WinRAR.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1248
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\K8DZUixLn8.bat"
            5⤵
              PID:2284
              • C:\Windows\system32\chcp.com
                chcp 65001
                6⤵
                  PID:2796
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2604
                • C:\Users\Default\Music\spoolsv.exe
                  "C:\Users\Default\Music\spoolsv.exe"
                  6⤵
                  • Executes dropped EXE
                  • Modifies system certificate store
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1980
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Music\spoolsv.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2780
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Default\Music\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2564
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Users\Default\Music\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1120
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\Packages\Debugger\taskhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2164
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\Packages\Debugger\taskhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1572
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\Packages\Debugger\taskhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:972
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\twain_32\csrss.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2540
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\twain_32\csrss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2088
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Windows\twain_32\csrss.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:264
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Program Files\Microsoft Office\Office14\1033\Idle.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:768
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\Office14\1033\Idle.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1976
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Office\Office14\1033\Idle.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2104
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\lsass.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1492
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1744
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2756
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WinRARW" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\WinRAR.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2884
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WinRAR" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\WinRAR.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2856
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WinRARW" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\WinRAR.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2264

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\K8DZUixLn8.bat

        Filesize

        162B

        MD5

        9294837dde83bb3daf207950ee793dbe

        SHA1

        06fd6a10832f90372edbfec5d0c3ddebe5af4f64

        SHA256

        d1ce0dd0969a87fdcd439912d59e44869243bbc5aa88a07d1be6bd25ab5ea083

        SHA512

        017efbee5c96fed47fa0dc407c948b77a9cc80f2ded9ed19ae4a126397b50c9d379d2682d705bfbc82cd21b546e36d100c4a03e4f6c86deeea0cd412f51d30fa

      • C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\TiuHlu4XhcAKoMZ02aF6pXhDoyLIxrmaBsj4qsAm38j7SD.bat

        Filesize

        158B

        MD5

        3ba5ad0e1e86585a3da9885a82d72844

        SHA1

        2fcb6be966cdcc616bf5a0a61724b512bf445292

        SHA256

        ecbcd5229784807556c92a2963329ddbd1997a3b20cf7b99e0e423502a8211fa

        SHA512

        63feede3cabf145f9f6059bf0145518d0defb160752da724e1004f2b209a3050cf239694e2002c9e7400f42d3594ce27aacae559a79f763c66feea2e501e44d2

      • C:\Users\Admin\AppData\Local\Temp\chrome_BITS_8712_1425929850\Boot\Resources\root\bin\cache\WinRAR\tmp37171.WMC\data\winrar-x64-701\pl9xeMo94WjXLJpWDpGYGGDiS01KZtVSwJMEdv3jLCZMJWaQ84V863B.vbe

        Filesize

        325B

        MD5

        f8b8414170b10f9ba16ba0efb6816b17

        SHA1

        8a03e25c550c17168bd6846f328dd942a1ceabde

        SHA256

        60bc0e26c80e5aa6d8da3865f8d1be9f7cce74a8e76f7b6646febdf2e676ab7a

        SHA512

        516fe1f932e6cd0ed52aed568acb25ebefa639455688cfd53dcd0362585926e5b9dfab9e23e980a9d237e7c1852e196948f28b8a62ba540aa3a25de6cacca9e7

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

        Filesize

        7KB

        MD5

        81a3140374a5f59925a85da53c3f96a6

        SHA1

        6ba5e2dc596d03765c82eb6579c07f91a2c1867f

        SHA256

        041c5a1c8214f3669a05db5b67ce6bbe09f63a1c5e582c0fb5bf851edcb13367

        SHA512

        2dbf22125207174ac211a67ef08476b8d859c99e4f95da1bfcc2ed007c02551c7ea0a6847a3dd58464dbf60df5e0e5c7f23c02bf79b16b08b858db9b022597e0

      • memory/1616-85-0x000000001B740000-0x000000001BA22000-memory.dmp

        Filesize

        2.9MB

      • memory/1980-131-0x00000000000D0000-0x00000000002D0000-memory.dmp

        Filesize

        2.0MB

      • memory/2128-17-0x00000000006D0000-0x00000000006EC000-memory.dmp

        Filesize

        112KB

      • memory/2128-23-0x00000000006A0000-0x00000000006AC000-memory.dmp

        Filesize

        48KB

      • memory/2128-25-0x00000000006B0000-0x00000000006BE000-memory.dmp

        Filesize

        56KB

      • memory/2128-27-0x0000000000730000-0x0000000000738000-memory.dmp

        Filesize

        32KB

      • memory/2128-29-0x0000000000740000-0x000000000074C000-memory.dmp

        Filesize

        48KB

      • memory/2128-21-0x0000000000710000-0x0000000000722000-memory.dmp

        Filesize

        72KB

      • memory/2128-19-0x00000000006F0000-0x0000000000708000-memory.dmp

        Filesize

        96KB

      • memory/2128-15-0x0000000000610000-0x000000000061E000-memory.dmp

        Filesize

        56KB

      • memory/2128-13-0x0000000000310000-0x0000000000510000-memory.dmp

        Filesize

        2.0MB

      • memory/3008-128-0x0000000002890000-0x0000000002898000-memory.dmp

        Filesize

        32KB