Analysis
- max time kernel
90s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
07/05/2024, 10:00
General
- Target 9e5bf632872b33aba312ae443bf1b2eaa0e8dd33dac27e72a604bb12394c1b73.exe
- Size 275KB
- Sample240507-l1sp4aea45
- SHA256 9e5bf632872b33aba312ae443bf1b2eaa0e8dd33dac27e72a604bb12394c1b73
Malware Config
Extracted
-
stealc
-
http://185.172.128.151
-
url_path
/7043a0c6a68d9c65.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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\9e5bf632872b33aba312ae443bf1b2eaa0e8dd33dac27e72a604bb12394c1b73.exe"C:\Users\Admin\AppData\Local\Temp\9e5bf632872b33aba312ae443bf1b2eaa0e8dd33dac27e72a604bb12394c1b73.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 24442⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4992 -ip 49921⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
memory/4992-1-0x0000000002DE0000-0x0000000002EE0000-memory.dmp
memory/4992-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4992-2-0x0000000002DA0000-0x0000000002DC7000-memory.dmp
memory/4992-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4992-83-0x0000000000400000-0x0000000002B02000-memory.dmp
memory/4992-90-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4992-89-0x0000000000400000-0x0000000002B02000-memory.dmp