Analysis
- max time kernel
90s - max time network
126s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
01/06/2024, 02:00
General
- Target 898252d96b530ccde96693aaf6b4d5a61729ead1738db19c5db1ac8581a30840.exe
- Size 2.4MB
- Sample240601-ce27zaeg26
- SHA256 898252d96b530ccde96693aaf6b4d5a61729ead1738db19c5db1ac8581a30840
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 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\898252d96b530ccde96693aaf6b4d5a61729ead1738db19c5db1ac8581a30840.exe"C:\Users\Admin\AppData\Local\Temp\898252d96b530ccde96693aaf6b4d5a61729ead1738db19c5db1ac8581a30840.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4314.tmpC:\Users\Admin\AppData\Local\Temp\kat4314.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat4314.tmp
memory/772-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-9-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-8-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-24-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-25-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-27-0x000000001B8C0000-0x000000001BB1F000-memory.dmp
memory/772-42-0x0000000000400000-0x0000000000649000-memory.dmp
memory/772-43-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3692-0-0x00000000023C0000-0x00000000023C1000-memory.dmp
memory/3692-2-0x0000000004160000-0x00000000042AC000-memory.dmp
memory/3692-10-0x0000000000400000-0x0000000000663000-memory.dmp