Analysis
- user interaction
yes - max time kernel
300s - max time network
299s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
02/11/2026, 02:26
General
- Target Fling-Standalone31.559.6032.exe
- Size 3.4MB
- Sample261102-cxdbka115p
- 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\Fling-Standalone31.559.6032.exe"C:\Users\Admin\AppData\Local\Temp\Fling-Standalone31.559.6032.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Fling-Standalone31.559.6032.exe"C:\Users\Admin\AppData\Local\Temp\Fling-Standalone31.559.6032.exe" 545592b27dc52⤵
- 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
574C58DD33004C2DA3804DC87704A5C3_web_data.db
8DE05A9067E440E1B1EC61BF3B419DAA_places_bk.db
A44EEF1725D849D28BAA5F0D1473D16C_web_data.db
memory/2592-0-0x00007FFB08350000-0x00007FFB08360000-memory.dmp
memory/2592-1-0x0000000000400000-0x0000000000776000-memory.dmp
memory/3036-17-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-66-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-15-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-19-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-23-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-25-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-24-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-22-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-21-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-20-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-18-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-14-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-5-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-38-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-72-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-16-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-62-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-132-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-13-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-189-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-175-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-172-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-242-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-3-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/3036-2-0x00007FFB08350000-0x00007FFB08360000-memory.dmp
memory/3036-152-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-120-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-103-0x0000000180000000-0x000000018030C000-memory.dmp
memory/3036-248-0x0000000000400000-0x0000000000776000-memory.dmp