Analysis
- max time kernel
133s - max time network
286s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 00:08
General
- Target 70f9128a112838ef3be75067105aa99c5b94b52209d0263a7cd55f5fa67c589e.exe
- Size 1.8MB
- Sample240607-ae8nmseb4w
- SHA256 70f9128a112838ef3be75067105aa99c5b94b52209d0263a7cd55f5fa67c589e
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 4 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\70f9128a112838ef3be75067105aa99c5b94b52209d0263a7cd55f5fa67c589e.exe"C:\Users\Admin\AppData\Local\Temp\70f9128a112838ef3be75067105aa99c5b94b52209d0263a7cd55f5fa67c589e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7520.tmpC:\Users\Admin\AppData\Local\Temp\kat7520.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
kat7520.tmp
memory/2964-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-26-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-28-0x0000000025F20000-0x000000002617F000-memory.dmp
memory/2964-43-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2964-44-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-0-0x00000000022A0000-0x00000000022A1000-memory.dmp
memory/4240-2-0x0000000003F20000-0x000000000406B000-memory.dmp
memory/4240-6-0x0000000000400000-0x00000000005C8000-memory.dmp