Analysis
- max time kernel
90s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
16/02/2024, 18:38
General
- Target cfDqE00R1M2FHvud1UskY7La.exe
- Size 253KB
- Sample240216-w92dpseh32
- SHA256 0ce20355c39691f815eca3acf7e9e6addd4e8e2159297e4afbceef64111a0837
Malware Config
Extracted
-
stealc
-
http://185.172.128.24
-
url_path
/f993692117a3fda2.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\cfDqE00R1M2FHvud1UskY7La.exe"C:\Users\Admin\AppData\Local\Temp\cfDqE00R1M2FHvud1UskY7La.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1272 -s 22722⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1272 -ip 12721⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
mozglue.dll
nss3.dll
memory/1272-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1272-26-0x0000000000400000-0x0000000002BEB000-memory.dmp
memory/1272-1-0x0000000002CD0000-0x0000000002DD0000-memory.dmp
memory/1272-3-0x0000000000400000-0x0000000002BEB000-memory.dmp
memory/1272-72-0x0000000002CD0000-0x0000000002DD0000-memory.dmp
memory/1272-77-0x0000000000400000-0x0000000002BEB000-memory.dmp
memory/1272-82-0x0000000000400000-0x0000000002BEB000-memory.dmp
memory/1272-2-0x0000000004940000-0x0000000004974000-memory.dmp
memory/1272-92-0x0000000000400000-0x0000000002BEB000-memory.dmp