Analysis
- max time kernel
92s - max time network
122s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
21/02/2024, 01:16
General
- Target 07b4f0df45ad3a837c2b6ad61c402cc9.exe
- Size 182KB
- Sample240221-bmsstshd92
- SHA256 30d2c8eb828cdcc0768a51196c11ac26ec0d5d4408db7b9a1e53d3668d83cf31
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\07b4f0df45ad3a837c2b6ad61c402cc9.exe"C:\Users\Admin\AppData\Local\Temp\07b4f0df45ad3a837c2b6ad61c402cc9.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 6124 -s 23802⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 6124 -ip 61241⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
memory/6124-1-0x0000000000A10000-0x0000000000B10000-memory.dmp
memory/6124-3-0x0000000000400000-0x0000000000823000-memory.dmp
memory/6124-2-0x0000000000990000-0x00000000009C4000-memory.dmp
memory/6124-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/6124-75-0x0000000000400000-0x0000000000823000-memory.dmp
memory/6124-93-0x0000000000A10000-0x0000000000B10000-memory.dmp
memory/6124-94-0x0000000000400000-0x0000000000823000-memory.dmp