Analysis
- max time kernel
148s - max time network
145s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
24/09/2026, 01:33
General
- Target xoso66vn.me.exe
- Size 202KB
- Sample260924-byl5esbc73
- SHA256 7c6bb9a476d10405d8b88c5a7c5d3a1b295edba64f3fb5ac9a319bbcad023f9f
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
xoso66vn.me:54984
-
malware.xoso66vn.me:54984
-
49b7a817-f458-43e3-98bd-cc2d6dc42f1b
-
activate_away_mode
true
-
backup_connection_host
malware.xoso66vn.me
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2026-07-06T03:11:40.690165036Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
54984
-
default_group
Default
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
49b7a817-f458-43e3-98bd-cc2d6dc42f1b
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
xoso66vn.me
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
- Family: NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Drops file in Program Files directory 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 57 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\xoso66vn.me.exe"C:\Users\Admin\AppData\Local\Temp\xoso66vn.me.exe"1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
C:\Program Files (x86)\ISS Monitor\issmon.exe"C:\Program Files (x86)\ISS Monitor\issmon.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
issmon.exe
memory/996-0-0x0000000001A20000-0x0000000001A30000-memory.dmp
memory/996-1-0x0000000074CA2000-0x0000000074CA4000-memory.dmp
memory/996-3-0x0000000074CA0000-0x00000000752C1000-memory.dmp
memory/996-7-0x0000000001A20000-0x0000000001A30000-memory.dmp
memory/996-9-0x0000000074CA2000-0x0000000074CA4000-memory.dmp
memory/996-10-0x0000000074CA0000-0x00000000752C1000-memory.dmp
memory/6136-5-0x0000000074CA0000-0x00000000752C1000-memory.dmp
memory/6136-6-0x0000000074CA0000-0x00000000752C1000-memory.dmp
memory/6136-8-0x0000000074CA0000-0x00000000752C1000-memory.dmp