Analysis
- max time kernel
148s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240220-en - resource tags
- submitted
20/02/2024, 17:16
General
- Target 31428687c916bfa8d7e0fac111b6d12b.exe
- Size 177KB
- Sample240220-vs4xtsca9v
- SHA256 ba2f65ee1823d86f6112d40fc4853ecd534e757ac479f76a57558ca66b4765af
Malware Config
Extracted
-
stealc
-
http://185.172.128.145
-
url_path
/3cd2b41cbde8fc9c.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\31428687c916bfa8d7e0fac111b6d12b.exe"C:\Users\Admin\AppData\Local\Temp\31428687c916bfa8d7e0fac111b6d12b.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 23402⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 232 -ip 2321⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
memory/232-60-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-46-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-56-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/232-1-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/232-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/232-3-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-82-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-87-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-2-0x0000000002570000-0x00000000025A4000-memory.dmp
memory/232-97-0x0000000000400000-0x0000000000822000-memory.dmp
memory/232-98-0x0000000000400000-0x0000000000822000-memory.dmp