Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 09:41

General

  • Target
    T. HALK BANKASI A.S,pdf.exe
  • Size 1.2MB
  • Sample260415-ln8wjsdz91
  • SHA256 6d1ff505708459746fa2af72046218ad6da0e5d609d238d301c4d8537723c579
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • darkcloud

Attributes

Signatures

  • Family: DarkCloud

    An information stealer written in Visual Basic.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files 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.

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\T. HALK BANKASI A.S,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\T. HALK BANKASI A.S,pdf.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2392
    • C:\Users\Admin\AppData\Local\Temp\T. HALK BANKASI A.S,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\T. HALK BANKASI A.S,pdf.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4248
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im chrome.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4476
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SFTGHQDK-Admin\chrome.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SFTGHQDK-Admin\chrome.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3152
        • C:\Program Files\Google\Chrome\Application\Google-Chrome.exe
          "C:\Program Files\Google\Chrome\Application\Google-Chrome.exe"
          4⤵
          • Executes dropped EXE
          PID:3168
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5036
  • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
    "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
    1⤵
      PID:1792

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Google-Chrome.exe

          • Path C:\Program Files\Google\Chrome\Application\Google-Chrome.exe
          • Size 8KB
          • SHA256 0f78885c06cc8b07829847f8b9b948f4b3048cb42e4e00dbee8fb684424664ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          __PSScriptPolicyTest_vdnmp2gl.bxc.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vdnmp2gl.bxc.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          chrome.exe

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SFTGHQDK-Admin\chrome.exe
          • Size 28KB
          • SHA256 d890c39dc1644a16f99142a73766db35676b386d6319c6b0f82e8c88ea821a85
          • MD5 SHA1 SHA512 SSDEEP TLSH

          chrome_decrypt.zip

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SFTGHQDK-Admin\chrome_decrypt.zip
          • Size 8KB
          • SHA256 1f5fca2a2ff6581857dfe856692f3146e2d4b40a61c33ae7661f40f2367516ba
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2392-6-0x0000000005B30000-0x0000000005B42000-memory.dmp

          memory/2392-1-0x0000000005B40000-0x00000000060E6000-memory.dmp

          memory/2392-0-0x0000000000980000-0x0000000000AC2000-memory.dmp

          memory/2392-7-0x00000000060F0000-0x00000000066F2000-memory.dmp

          memory/2392-8-0x00000000056F0000-0x0000000005700000-memory.dmp

          memory/2392-10-0x0000000008EA0000-0x0000000008FBC000-memory.dmp

          memory/2392-5-0x0000000005890000-0x000000000592C000-memory.dmp

          memory/2392-2-0x0000000005590000-0x0000000005622000-memory.dmp

          memory/2392-21-0x00000000060F0000-0x00000000066F2000-memory.dmp

          memory/2392-3-0x00000000056F0000-0x0000000005700000-memory.dmp

          memory/2392-4-0x0000000005570000-0x000000000557A000-memory.dmp

          memory/3152-92-0x0000000002CC0000-0x00000000032C2000-memory.dmp

          memory/4248-18-0x0000000000400000-0x0000000000472000-memory.dmp

          memory/4248-16-0x0000000000400000-0x0000000000472000-memory.dmp

          memory/4248-87-0x0000000000400000-0x0000000000472000-memory.dmp

          memory/4248-90-0x00000000044C0000-0x0000000004AC2000-memory.dmp

          memory/5036-23-0x000001CB50B90000-0x000001CB50BA0000-memory.dmp

          memory/5036-31-0x000001CB50AE0000-0x000001CB50B02000-memory.dmp

          memory/5036-32-0x000001CB50BA0000-0x000001CB50BE6000-memory.dmp

          memory/5036-24-0x000001CB50B90000-0x000001CB50BA0000-memory.dmp

          memory/5036-88-0x000001CB50B90000-0x000001CB50BA0000-memory.dmp

          memory/5036-89-0x000001CB50B90000-0x000001CB50BA0000-memory.dmp

          memory/5036-91-0x000001CB38480000-0x000001CB38492000-memory.dmp