Analysis
- max time kernel
148s - max time network
141s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
23/09/2026, 18:18
General
- Target embedded_payload.exe
- Size 440KB
- Sample260923-wxt4vsvwcx
- SHA256 4fc2e5347475bab58d1b004e4396fd90ea8e95152942586093938646fca660fa
Score
10/10
Malware Config
Extracted
Family
-
darkcloud
Version
-
4.9
Signatures
- Family: DarkCloud
An information stealer written in Visual Basic.
- Executes dropped EXE 1 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.
- Adds Run key to start application 2 TTPs 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of SetWindowsHookEx 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\embedded_payload.exe"C:\Users\Admin\AppData\Local\Temp\embedded_payload.exe"1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\fustianize.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\fustianize.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
fustianize.exe