Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
26/06/2024, 04:36
General
- Target fa70063114eeaf9bb42e688e413eec32f6e9144ace3f3d59523a094a07dc52d2.exe
- Size 2.2MB
- Sample240626-e8c62syajn
- SHA256 fa70063114eeaf9bb42e688e413eec32f6e9144ace3f3d59523a094a07dc52d2
Malware Config
Extracted
-
vidar
-
https://t.me/g067n
-
https://steamcommunity.com/profiles/76561199707802586
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
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 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\fa70063114eeaf9bb42e688e413eec32f6e9144ace3f3d59523a094a07dc52d2.exe"C:\Users\Admin\AppData\Local\Temp\fa70063114eeaf9bb42e688e413eec32f6e9144ace3f3d59523a094a07dc52d2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4EEB.tmpC:\Users\Admin\AppData\Local\Temp\kat4EEB.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat4EEB.tmp
memory/412-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-27-0x000000002F6C0000-0x000000002F91F000-memory.dmp
memory/412-35-0x0000000000400000-0x0000000000648000-memory.dmp
memory/412-36-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4284-0-0x00000000023B0000-0x00000000023B1000-memory.dmp
memory/4284-2-0x0000000002AA0000-0x0000000002BB0000-memory.dmp
memory/4284-9-0x0000000000400000-0x0000000000641000-memory.dmp