Analysis

  • max time kernel
    149s
  • max time network
    105s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06/11/2025, 11:01

General

  • Target
    b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe
  • Size 751KB
  • Sample251106-m41esawkbp
  • SHA256 b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcloud

Attributes

Signatures

  • DarkCloud

    An information stealer written in Visual Basic.

  • Darkcloud family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 3 TTPs

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

  • SmartAssembly .NET packer 1 IoCs

    Detects SmartAssembly .NET packer.

  • Suspicious use of SetThreadContext 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 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe
    "C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5184
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5220
    • C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe
      "C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe"
      2⤵
        PID:4600
      • C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe
        "C:\Users\Admin\AppData\Local\Temp\b3c88415963de8d3885dfb1f8f6ac107ff8ee35881bcd0ec48c196fac52a2bad.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4436

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_2hn0rbup.rcd.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2hn0rbup.rcd.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          memory/4436-9-0x0000000000400000-0x0000000000443000-memory.dmp

          memory/4436-11-0x0000000000400000-0x0000000000443000-memory.dmp

          memory/4436-60-0x0000000000400000-0x0000000000443000-memory.dmp

          memory/5184-1-0x0000000005330000-0x00000000058D6000-memory.dmp

          memory/5184-2-0x0000000004C70000-0x0000000004D02000-memory.dmp

          memory/5184-6-0x0000000005280000-0x0000000005296000-memory.dmp

          memory/5184-7-0x0000000004E80000-0x0000000004E90000-memory.dmp

          memory/5184-8-0x00000000064E0000-0x000000000656E000-memory.dmp

          memory/5184-0-0x0000000000250000-0x0000000000312000-memory.dmp

          memory/5184-4-0x0000000004D20000-0x0000000004D2A000-memory.dmp

          memory/5184-3-0x0000000004E80000-0x0000000004E90000-memory.dmp

          memory/5184-5-0x0000000004F30000-0x0000000004FCC000-memory.dmp

          memory/5220-38-0x0000000005C20000-0x0000000005C6C000-memory.dmp

          memory/5220-47-0x00000000061B0000-0x00000000061CE000-memory.dmp

          memory/5220-27-0x0000000004DD0000-0x0000000004DF2000-memory.dmp

          memory/5220-28-0x0000000004E70000-0x0000000004ED6000-memory.dmp

          memory/5220-17-0x00000000023C0000-0x00000000023D0000-memory.dmp

          memory/5220-37-0x0000000005B80000-0x0000000005B9E000-memory.dmp

          memory/5220-29-0x0000000004EE0000-0x0000000004F46000-memory.dmp

          memory/5220-16-0x00000000023D0000-0x0000000002406000-memory.dmp

          memory/5220-36-0x00000000056B0000-0x0000000005A07000-memory.dmp

          memory/5220-39-0x0000000006170000-0x00000000061A4000-memory.dmp

          memory/5220-40-0x0000000071100000-0x000000007114C000-memory.dmp

          memory/5220-18-0x0000000005050000-0x000000000567A000-memory.dmp

          memory/5220-48-0x0000000006D90000-0x0000000006E34000-memory.dmp

          memory/5220-49-0x0000000007510000-0x0000000007B8A000-memory.dmp

          memory/5220-50-0x0000000006ED0000-0x0000000006EEA000-memory.dmp

          memory/5220-51-0x0000000006F50000-0x0000000006F5A000-memory.dmp

          memory/5220-52-0x0000000007160000-0x00000000071F6000-memory.dmp

          memory/5220-53-0x00000000070E0000-0x00000000070F1000-memory.dmp

          memory/5220-54-0x0000000007110000-0x000000000711E000-memory.dmp

          memory/5220-55-0x0000000007120000-0x0000000007135000-memory.dmp

          memory/5220-56-0x0000000007220000-0x000000000723A000-memory.dmp

          memory/5220-57-0x0000000007210000-0x0000000007218000-memory.dmp

          memory/5220-15-0x00000000023C0000-0x00000000023D0000-memory.dmp