Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
07/05/2024, 17:09
General
- Target e6338bc58800f98b3e631ef96bb81ca0_NEAS.exe
- Size 275KB
- Sample240507-vn8efsaa89
- SHA256 b3399180ca036676795483dc9376cde5cd49e81de90b124f7d49ccf447f6c9f3
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\e6338bc58800f98b3e631ef96bb81ca0_NEAS.exe"C:\Users\Admin\AppData\Local\Temp\e6338bc58800f98b3e631ef96bb81ca0_NEAS.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 23962⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4156 -ip 41561⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
memory/4156-1-0x0000000002D90000-0x0000000002E90000-memory.dmp
memory/4156-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4156-2-0x0000000002E90000-0x0000000002EB7000-memory.dmp
memory/4156-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4156-52-0x0000000000400000-0x0000000002B02000-memory.dmp
memory/4156-86-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4156-85-0x0000000000400000-0x0000000002B02000-memory.dmp