Analysis
- max time kernel
117s - max time network
117s - platform
windows7_x64 - resource
win7-20240215-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.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 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
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/2156-4-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-2-0x00000000002A0000-0x00000000002D4000-memory.dmp
memory/2156-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2156-37-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-41-0x00000000008A0000-0x00000000009A0000-memory.dmp
memory/2156-42-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-46-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-3-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-1-0x00000000008A0000-0x00000000009A0000-memory.dmp
memory/2156-73-0x0000000000400000-0x0000000000822000-memory.dmp
memory/2156-74-0x0000000000400000-0x0000000000822000-memory.dmp