Analysis
- max time kernel
147s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
09/06/2024, 16:39
General
- Target 6823237043ea96d749ca2b3dc6b292cdd9970d8afb13e3f1fd44940dc2ff78e6.exe
- Size 2.4MB
- Sample240609-t5z9qsdb79
- SHA256 6823237043ea96d749ca2b3dc6b292cdd9970d8afb13e3f1fd44940dc2ff78e6
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\6823237043ea96d749ca2b3dc6b292cdd9970d8afb13e3f1fd44940dc2ff78e6.exe"C:\Users\Admin\AppData\Local\Temp\6823237043ea96d749ca2b3dc6b292cdd9970d8afb13e3f1fd44940dc2ff78e6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat5C87.tmpC:\Users\Admin\AppData\Local\Temp\kat5C87.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kat5C87.tmp
memory/960-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-16-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-18-0x00000000193B0000-0x000000001960F000-memory.dmp
memory/960-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/960-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3044-0-0x00000000023D0000-0x00000000023D1000-memory.dmp
memory/3044-1-0x0000000004150000-0x00000000042B3000-memory.dmp
memory/3044-9-0x0000000000400000-0x0000000000663000-memory.dmp