Analysis
- max time kernel
147s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
04/06/2024, 02:32
General
- Target 49f615523b2db884329c9e2d4f5afdef90eb101f97353e7244f4b06aa0dac895.exe
- Size 1.8MB
- Sample240604-c1ec2aah87
- SHA256 49f615523b2db884329c9e2d4f5afdef90eb101f97353e7244f4b06aa0dac895
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/ta904ek
-
https://steamcommunity.com/profiles/76561199695752269
-
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\49f615523b2db884329c9e2d4f5afdef90eb101f97353e7244f4b06aa0dac895.exe"C:\Users\Admin\AppData\Local\Temp\49f615523b2db884329c9e2d4f5afdef90eb101f97353e7244f4b06aa0dac895.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat65BF.tmpC:\Users\Admin\AppData\Local\Temp\kat65BF.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat65BF.tmp
memory/836-0-0x0000000002670000-0x0000000002671000-memory.dmp
memory/836-2-0x0000000002BC0000-0x0000000002D0C000-memory.dmp
memory/836-9-0x0000000000400000-0x00000000005CE000-memory.dmp
memory/2200-8-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-10-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-15-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-16-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-18-0x0000000019390000-0x00000000195EF000-memory.dmp
memory/2200-33-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2200-34-0x0000000000400000-0x0000000000649000-memory.dmp