Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
12/06/2024, 17:12
General
- Target 399dcd5e5d9f6da83bfbd445564260a0856fcc05a54f43cfc7f3e4a9db36f6e7.exe
- Size 2.1MB
- Sample240612-vqx2hasepd
- SHA256 399dcd5e5d9f6da83bfbd445564260a0856fcc05a54f43cfc7f3e4a9db36f6e7
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
-
https://steamcommunity.com/profiles/76561199698764354
-
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\399dcd5e5d9f6da83bfbd445564260a0856fcc05a54f43cfc7f3e4a9db36f6e7.exe"C:\Users\Admin\AppData\Local\Temp\399dcd5e5d9f6da83bfbd445564260a0856fcc05a54f43cfc7f3e4a9db36f6e7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7733.tmpC:\Users\Admin\AppData\Local\Temp\kat7733.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat7733.tmp
memory/1260-0-0x00000000008E0000-0x00000000008E1000-memory.dmp
memory/1260-1-0x0000000004010000-0x0000000004120000-memory.dmp
memory/1260-10-0x0000000000400000-0x0000000000629000-memory.dmp
memory/4212-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-12-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-14-0x00000000217B0000-0x0000000021A0F000-memory.dmp
memory/4212-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4212-23-0x0000000000400000-0x0000000000648000-memory.dmp