Analysis
- max time kernel
91s - max time network
100s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
07/05/2024, 19:22
General
- Target 95674cb006bfca36cd0e0f9b80ef0ed240c64f2ee955d9dd4af8102a0c4d9806.exe
- Size 158KB
- Sample240507-x3d59seb52
- SHA256 95674cb006bfca36cd0e0f9b80ef0ed240c64f2ee955d9dd4af8102a0c4d9806
Malware Config
Extracted
-
stealc
-
http://49.13.229.86
-
url_path
/c73eed764cc59dcb.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\95674cb006bfca36cd0e0f9b80ef0ed240c64f2ee955d9dd4af8102a0c4d9806.exe"C:\Users\Admin\AppData\Local\Temp\95674cb006bfca36cd0e0f9b80ef0ed240c64f2ee955d9dd4af8102a0c4d9806.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/3712-0-0x00000000744DE000-0x00000000744DF000-memory.dmp
memory/3712-1-0x0000000000680000-0x00000000006AE000-memory.dmp
memory/3712-8-0x00000000744D0000-0x0000000074C81000-memory.dmp
memory/3712-11-0x00000000744D0000-0x0000000074C81000-memory.dmp
memory/3736-4-0x0000000000400000-0x000000000063B000-memory.dmp
memory/3736-7-0x0000000000400000-0x000000000063B000-memory.dmp
memory/3736-9-0x0000000000400000-0x000000000063B000-memory.dmp
memory/3736-12-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3736-80-0x0000000000400000-0x000000000063B000-memory.dmp