Analysis
- max time kernel
90s - max time network
126s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
08/06/2024, 02:48
General
- Target 716534a2375d287e289b477b3ba0a92b857e6a82df41b888b47df961ae1feee5.exe
- Size 2.5MB
- Sample240608-dagadagg45
- SHA256 716534a2375d287e289b477b3ba0a92b857e6a82df41b888b47df961ae1feee5
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\716534a2375d287e289b477b3ba0a92b857e6a82df41b888b47df961ae1feee5.exe"C:\Users\Admin\AppData\Local\Temp\716534a2375d287e289b477b3ba0a92b857e6a82df41b888b47df961ae1feee5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat398E.tmpC:\Users\Admin\AppData\Local\Temp\kat398E.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
kat398E.tmp
memory/3620-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-27-0x000000001B870000-0x000000001BACF000-memory.dmp
memory/3620-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3620-43-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3876-0-0x00000000023D0000-0x00000000023D1000-memory.dmp
memory/3876-2-0x0000000004190000-0x00000000042F3000-memory.dmp
memory/3876-9-0x0000000000400000-0x000000000067A000-memory.dmp