Analysis
- max time kernel
300s - max time network
301s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260911-en - resource tags
- submitted
31/10/2026, 21:28
General
- Target packagecache_x64_data.exe
- Size 3.4MB
- Sample261031-1bppgaes9s
- SHA256 2d7398c86e5a8509a8b12a0475ad181daa1232f3e2804fd88b04ea79ef915b86
Malware Config
Extracted
-
onyxc2
-
karichilevels.click
-
port
443
-
url_path
/O4THDE5w/backend/api/app.php
Signatures
- Family: OnyxC2
OnyxC2 is a Windows backdoor written in C++.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe"C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe"C:\Users\Admin\AppData\Local\Temp\packagecache_x64_data.exe" 936107b3c9da2⤵
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
~l8dbg.log
memory/2656-0-0x00007FFC96B40000-0x00007FFC96B50000-memory.dmp
memory/2656-2-0x00007FFC96B40000-0x00007FFC96B50000-memory.dmp
memory/2656-1-0x0000000000400000-0x0000000000776000-memory.dmp
memory/3956-20-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-5-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/3956-17-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-18-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-16-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-27-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-25-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-26-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-24-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-23-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-22-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-21-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-4-0x00007FFC96B40000-0x00007FFC96B50000-memory.dmp
memory/3956-19-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-7-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-15-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-40-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-74-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-80-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-78-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-124-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-212-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-227-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-167-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-228-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-120-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-77-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-75-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3956-229-0x0000000000400000-0x0000000000776000-memory.dmp
memory/3956-230-0x00007FFC96B40000-0x00007FFC96B50000-memory.dmp