Analysis
- max time kernel
147s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
07/06/2024, 05:54
General
- Target ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe
- Size 2.9MB
- Sample240607-gl9b3sae3v
- SHA256 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f
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\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4D55.tmpC:\Users\Admin\AppData\Local\Temp\kat4D55.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat4D55.tmp
memory/2244-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-18-0x000000001B880000-0x000000001BADF000-memory.dmp
memory/2244-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2244-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3920-0-0x0000000002580000-0x0000000002581000-memory.dmp
memory/3920-2-0x0000000004350000-0x00000000044B6000-memory.dmp
memory/3920-10-0x0000000000400000-0x00000000006EF000-memory.dmp