Analysis

  • max time kernel
    25s
  • max time network
    20s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2025 05:17

General

  • Target

    5a0a10f6b1fdbfa50ad78bc71702a21275cedc7c7da7171e4ca86b01314e0617.exe

  • Size

    1.7MB

  • MD5

    53c51f410e619914de7f9dda8c18da66

  • SHA1

    5da42c476ccf634dc842e68c6af360f0831e472a

  • SHA256

    5a0a10f6b1fdbfa50ad78bc71702a21275cedc7c7da7171e4ca86b01314e0617

  • SHA512

    3a93a35a781a17dcd45dd74b79cb52c0bc15d9320ac44c47d1e1a97e644aa4bb1f9977b32d8de6a070bd8753646b1889f04f9a5b95fc6829be1b6c43247beb1c

  • SSDEEP

    24576:t3QwuLyEbVoCtPreIjNLoN/VNGeSQDx1m17zezKOkCzeJGFUJg:tgwuuEpdDLNwVMeXDL0fdSzAGD

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 6 IoCs

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

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 12 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of WriteProcessMemory 48 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\5a0a10f6b1fdbfa50ad78bc71702a21275cedc7c7da7171e4ca86b01314e0617.exe
    "C:\Users\Admin\AppData\Local\Temp\5a0a10f6b1fdbfa50ad78bc71702a21275cedc7c7da7171e4ca86b01314e0617.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2624
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:476
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1648
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/MSOCache/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1592
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:632
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1556
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:812
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:572
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1444
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2824
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2964
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2928
    • C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe
      "C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7033cb8e-b5de-4ab8-bddb-0759a09fb9d8.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2956
        • C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe
          "C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:1432
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\52b46dee-e825-4233-a7ce-7c1f4dc2b6ce.vbs"
        3⤵
          PID:2796
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2904
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Journal\ja-JP\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2852
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\ja-JP\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2784
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Journal\ja-JP\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2648

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\Idle.exe

      Filesize

      1.7MB

      MD5

      53c51f410e619914de7f9dda8c18da66

      SHA1

      5da42c476ccf634dc842e68c6af360f0831e472a

      SHA256

      5a0a10f6b1fdbfa50ad78bc71702a21275cedc7c7da7171e4ca86b01314e0617

      SHA512

      3a93a35a781a17dcd45dd74b79cb52c0bc15d9320ac44c47d1e1a97e644aa4bb1f9977b32d8de6a070bd8753646b1889f04f9a5b95fc6829be1b6c43247beb1c

    • C:\Users\Admin\AppData\Local\Temp\52b46dee-e825-4233-a7ce-7c1f4dc2b6ce.vbs

      Filesize

      523B

      MD5

      fbca60256d1b94c8ea41b1702ea466a6

      SHA1

      d88fca11ff319b5e9daf7924f1de50a63372309d

      SHA256

      8d78e3d0cdac9e7c234af4ef8eb7f91a093d6d5be21246b28a0371e89de099d9

      SHA512

      285333ef3a824cf8ba62509b64a098b5a2eab0b4d70f3e33ac877f99bb7ff450460b62ef486863c3ba3bd6158deabb1f6fa237e483f1d03a6ca992a935cb23d1

    • C:\Users\Admin\AppData\Local\Temp\7033cb8e-b5de-4ab8-bddb-0759a09fb9d8.vbs

      Filesize

      747B

      MD5

      6df24137ebb0d5718acdcfd4a91fcce7

      SHA1

      2d07f07484c303c47c0c4ffe655e28ca7b8890e1

      SHA256

      b1654ee08d4c607e142518359a376c2a5b57fd6feb7ae6b0dde98ec02de82a2d

      SHA512

      1a29df280071212167cdfe77d9314465798a232b0fc78fde854c3b65f97f06f96732939167d9d7e46a3672598ea7a629b5a066d1679bbbbea8bad93432f2792d

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

      Filesize

      7KB

      MD5

      eeb904957b404b57d6b72fb365ff6687

      SHA1

      833fce3528a182e3141e7edba0835485745673da

      SHA256

      f6eff4d416a336269d1342ced3de50a3947510751dc99f3e6a744e4b7f0f2592

      SHA512

      6cb7f95c3504bb2b9fa8162fb39c9e79511a1786b4bbb16352a8e6e3cd7f4db003c6a5949ec8a4b90922f042de689f79bbc245557ccbe86e943fa57f51b30f60

    • memory/476-63-0x000000001B6A0000-0x000000001B982000-memory.dmp

      Filesize

      2.9MB

    • memory/1592-77-0x0000000001D80000-0x0000000001D88000-memory.dmp

      Filesize

      32KB

    • memory/1892-122-0x00000000004A0000-0x00000000004B2000-memory.dmp

      Filesize

      72KB

    • memory/1892-78-0x0000000001220000-0x00000000013D6000-memory.dmp

      Filesize

      1.7MB

    • memory/2516-6-0x00000000009A0000-0x00000000009B6000-memory.dmp

      Filesize

      88KB

    • memory/2516-20-0x000007FEF59A0000-0x000007FEF638C000-memory.dmp

      Filesize

      9.9MB

    • memory/2516-10-0x0000000002280000-0x0000000002288000-memory.dmp

      Filesize

      32KB

    • memory/2516-12-0x0000000002290000-0x000000000229C000-memory.dmp

      Filesize

      48KB

    • memory/2516-15-0x00000000023C0000-0x00000000023C8000-memory.dmp

      Filesize

      32KB

    • memory/2516-14-0x00000000023B0000-0x00000000023BA000-memory.dmp

      Filesize

      40KB

    • memory/2516-13-0x00000000022A0000-0x00000000022AC000-memory.dmp

      Filesize

      48KB

    • memory/2516-16-0x00000000023D0000-0x00000000023DC000-memory.dmp

      Filesize

      48KB

    • memory/2516-17-0x000000001A850000-0x000000001A85C000-memory.dmp

      Filesize

      48KB

    • memory/2516-9-0x0000000002270000-0x000000000227C000-memory.dmp

      Filesize

      48KB

    • memory/2516-8-0x0000000002260000-0x0000000002270000-memory.dmp

      Filesize

      64KB

    • memory/2516-7-0x0000000002190000-0x00000000021A2000-memory.dmp

      Filesize

      72KB

    • memory/2516-0-0x000007FEF59A3000-0x000007FEF59A4000-memory.dmp

      Filesize

      4KB

    • memory/2516-5-0x0000000000990000-0x00000000009A0000-memory.dmp

      Filesize

      64KB

    • memory/2516-4-0x0000000000980000-0x0000000000988000-memory.dmp

      Filesize

      32KB

    • memory/2516-84-0x000007FEF59A0000-0x000007FEF638C000-memory.dmp

      Filesize

      9.9MB

    • memory/2516-3-0x0000000000960000-0x000000000097C000-memory.dmp

      Filesize

      112KB

    • memory/2516-2-0x000007FEF59A0000-0x000007FEF638C000-memory.dmp

      Filesize

      9.9MB

    • memory/2516-1-0x00000000009C0000-0x0000000000B76000-memory.dmp

      Filesize

      1.7MB