Analysis
- max time kernel
133s - max time network
298s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 02:33
General
- Target fab9962d3eef151e53265e0cfa0e5d4daafa56bcee317f22d85e12bcb80c19a5.exe
- Size 2.4MB
- Sample240607-c16saahc88
- SHA256 fab9962d3eef151e53265e0cfa0e5d4daafa56bcee317f22d85e12bcb80c19a5
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/ta904ek
-
https://steamcommunity.com/profiles/76561199695752269
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 8 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\fab9962d3eef151e53265e0cfa0e5d4daafa56bcee317f22d85e12bcb80c19a5.exe"C:\Users\Admin\AppData\Local\Temp\fab9962d3eef151e53265e0cfa0e5d4daafa56bcee317f22d85e12bcb80c19a5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat62E0.tmpC:\Users\Admin\AppData\Local\Temp\kat62E0.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat62E0.tmp
memory/828-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-9-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-10-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-25-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-26-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-28-0x0000000025F60000-0x00000000261BF000-memory.dmp
memory/828-43-0x0000000000400000-0x0000000000649000-memory.dmp
memory/828-44-0x0000000000400000-0x0000000000649000-memory.dmp
memory/4192-0-0x00000000007C0000-0x00000000007C1000-memory.dmp
memory/4192-8-0x0000000000400000-0x0000000000663000-memory.dmp
memory/4192-1-0x0000000003EB0000-0x0000000003FFC000-memory.dmp