Analysis
- max time kernel
90s - max time network
95s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
27/06/2024, 14:09
General
- Target b4c881caef9db66cabec99c7b6f673e5a67ab8109439c88f7cbf62a126270d72.exe
- Size 1.5MB
- Sample240627-rgl14avcqa
- SHA256 b4c881caef9db66cabec99c7b6f673e5a67ab8109439c88f7cbf62a126270d72
Malware Config
Extracted
-
stealc
-
default
-
http://68.183.108.129
-
url_path
/6259fdc16222e061.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- 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.
- Suspicious use of SetThreadContext 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
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b4c881caef9db66cabec99c7b6f673e5a67ab8109439c88f7cbf62a126270d72.exe"C:\Users\Admin\AppData\Local\Temp\b4c881caef9db66cabec99c7b6f673e5a67ab8109439c88f7cbf62a126270d72.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat6793.tmpC:\Users\Admin\AppData\Local\Temp\kat6793.tmp2⤵
- Executes dropped EXE
- 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
kat6793.tmp
memory/3224-8-0x0000000000400000-0x000000000063C000-memory.dmp
memory/3224-9-0x0000000000400000-0x000000000063C000-memory.dmp
memory/3224-4-0x0000000000400000-0x000000000063C000-memory.dmp
memory/3224-11-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3224-85-0x0000000000400000-0x000000000063C000-memory.dmp
memory/5056-0-0x00000000022E0000-0x00000000022E1000-memory.dmp
memory/5056-2-0x0000000002AB0000-0x0000000002BB4000-memory.dmp
memory/5056-10-0x0000000000400000-0x0000000000582000-memory.dmp