Analysis
- max time kernel
142s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/06/2024, 16:42
General
- Target f7d4f99cb583fd594b08dcc57d300f0cf70ff103517cf80aeb05c7ed189127d1.exe
- Size 1.9MB
- Sample240610-t7t6hatcpe
- SHA256 f7d4f99cb583fd594b08dcc57d300f0cf70ff103517cf80aeb05c7ed189127d1
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\f7d4f99cb583fd594b08dcc57d300f0cf70ff103517cf80aeb05c7ed189127d1.exe"C:\Users\Admin\AppData\Local\Temp\f7d4f99cb583fd594b08dcc57d300f0cf70ff103517cf80aeb05c7ed189127d1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\katFB29.tmpC:\Users\Admin\AppData\Local\Temp\katFB29.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=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
katFB29.tmp
memory/1304-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-14-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-16-0x000000001DC50000-0x000000001DEAF000-memory.dmp
memory/1304-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1304-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4544-0-0x00000000025A0000-0x00000000025A1000-memory.dmp
memory/4544-1-0x0000000004120000-0x0000000004283000-memory.dmp
memory/4544-9-0x0000000000400000-0x00000000005EE000-memory.dmp