Analysis
- max time kernel
147s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
29/06/2024, 07:58
General
- Target b896b08e6f55dc75efa8bfd658911f3cff99a63bf3982159ccc326463ba3054c.exe
- Size 2.2MB
- Sample240629-jt44fatejb
- SHA256 b896b08e6f55dc75efa8bfd658911f3cff99a63bf3982159ccc326463ba3054c
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\b896b08e6f55dc75efa8bfd658911f3cff99a63bf3982159ccc326463ba3054c.exe"C:\Users\Admin\AppData\Local\Temp\b896b08e6f55dc75efa8bfd658911f3cff99a63bf3982159ccc326463ba3054c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat350A.tmpC:\Users\Admin\AppData\Local\Temp\kat350A.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat350A.tmp
memory/2684-0-0x0000000002390000-0x0000000002391000-memory.dmp
memory/2684-1-0x0000000002BB0000-0x0000000002CC0000-memory.dmp
memory/2684-9-0x0000000000400000-0x0000000000635000-memory.dmp
memory/4528-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-27-0x000000002F6F0000-0x000000002F94F000-memory.dmp
memory/4528-35-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4528-36-0x0000000000400000-0x0000000000648000-memory.dmp