Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
13/06/2024, 08:03
General
- Target 8c318f0afb6e0ce65cf0d1afbc9324cd368f1f002f7d6e642acafa6dcfb54f60.exe
- Size 2.1MB
- Sample240613-jxxtjathmr
- SHA256 8c318f0afb6e0ce65cf0d1afbc9324cd368f1f002f7d6e642acafa6dcfb54f60
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 9 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\8c318f0afb6e0ce65cf0d1afbc9324cd368f1f002f7d6e642acafa6dcfb54f60.exe"C:\Users\Admin\AppData\Local\Temp\8c318f0afb6e0ce65cf0d1afbc9324cd368f1f002f7d6e642acafa6dcfb54f60.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat19AD.tmpC:\Users\Admin\AppData\Local\Temp\kat19AD.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4468 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat19AD.tmp
memory/1052-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-26-0x000000001DC20000-0x000000001DE7F000-memory.dmp
memory/1052-41-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1052-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3296-1-0x0000000004100000-0x0000000004210000-memory.dmp
memory/3296-9-0x0000000000400000-0x0000000000629000-memory.dmp
memory/3296-0-0x00000000024A0000-0x00000000024A1000-memory.dmp