Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
26/05/2024, 03:43
General
- Target 82560c6498bc76e8c4a4f6c7aedd37b44b90dead6c7dcd7d6e880978ef427a9c.exe
- Size 2.0MB
- Sample240526-d97llsdf5x
- SHA256 82560c6498bc76e8c4a4f6c7aedd37b44b90dead6c7dcd7d6e880978ef427a9c
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://steamcommunity.com/profiles/76561199689717899
-
https://t.me/copterwin
-
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\82560c6498bc76e8c4a4f6c7aedd37b44b90dead6c7dcd7d6e880978ef427a9c.exe"C:\Users\Admin\AppData\Local\Temp\82560c6498bc76e8c4a4f6c7aedd37b44b90dead6c7dcd7d6e880978ef427a9c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat6745.tmpC:\Users\Admin\AppData\Local\Temp\kat6745.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat6745.tmp
memory/1616-8-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-10-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-4-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-14-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-15-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-18-0x000000001B790000-0x000000001B9EF000-memory.dmp
memory/1616-32-0x0000000000400000-0x0000000000646000-memory.dmp
memory/1616-33-0x0000000000400000-0x0000000000646000-memory.dmp
memory/3144-0-0x00000000023B0000-0x00000000023B1000-memory.dmp
memory/3144-2-0x0000000004130000-0x0000000004279000-memory.dmp
memory/3144-9-0x0000000000400000-0x000000000060C000-memory.dmp