Analysis
- max time kernel
300s - max time network
302s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
31/10/2026, 21:28
General
- Target packagecache_x64_data.exe
- Size 3.4MB
- Sample261031-1be52af19l
- SHA256 2d7398c86e5a8509a8b12a0475ad181daa1232f3e2804fd88b04ea79ef915b86
Malware Config
Extracted
-
onyxc2
-
sanssharessfile.click
-
port
443
-
url_path
/Z4f5vmhR/backend/api/app.php
Signatures
- Family: OnyxC2
OnyxC2 is a Windows backdoor written in C++.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 58 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS1⤵
- Checks processor information in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe"C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1940-24-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-23-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-13-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-16-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-15-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-14-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-5-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-25-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-3-0x0000000001170000-0x0000000001171000-memory.dmp
memory/1940-22-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-18-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-21-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-20-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-17-0x0000000180000000-0x000000018030C000-memory.dmp
memory/1940-19-0x0000000180000000-0x000000018030C000-memory.dmp
memory/4308-26-0x0000000000400000-0x0000000000776000-memory.dmp
memory/4308-0-0x0000000000400000-0x0000000000776000-memory.dmp