Analysis
- max time kernel
146s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
10/06/2024, 00:42
General
- Target 18b7a0de5dbbe0bb4b0a87114f546d38fb645186050bff768f092ced53b46ece.exe
- Size 2.4MB
- Sample240610-a2cjqaab56
- SHA256 18b7a0de5dbbe0bb4b0a87114f546d38fb645186050bff768f092ced53b46ece
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\18b7a0de5dbbe0bb4b0a87114f546d38fb645186050bff768f092ced53b46ece.exe"C:\Users\Admin\AppData\Local\Temp\18b7a0de5dbbe0bb4b0a87114f546d38fb645186050bff768f092ced53b46ece.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4055.tmpC:\Users\Admin\AppData\Local\Temp\kat4055.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat4055.tmp
memory/1588-0-0x0000000002610000-0x0000000002611000-memory.dmp
memory/1588-1-0x0000000004200000-0x0000000004363000-memory.dmp
memory/1588-10-0x0000000000400000-0x0000000000663000-memory.dmp
memory/3580-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-16-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-19-0x000000001B7E0000-0x000000001BA3F000-memory.dmp
memory/3580-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3580-34-0x0000000000400000-0x0000000000648000-memory.dmp