Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
03/05/2026, 14:29
General
- Target 1.1.1.1.exe
- Size 202KB
- Sample260503-rtpmraew6p
- SHA256 9fcd6a10e2cb0f06e588e8dfa7c109fc9a55f5726703f1ce3d05828b35f4b2d6
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
byon88win.it.com:443
-
mu88-co.com:443
-
84253c1b-b597-46ed-82d7-d83c6d651473
-
activate_away_mode
false
-
backup_connection_host
mu88-co.com
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2026-02-12T16:10:40.022309536Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
false
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
443
-
default_group
Byon & Mu 88
-
enable_debug_mode
false
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
84253c1b-b597-46ed-82d7-d83c6d651473
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
byon88win.it.com
-
primary_dns_server
8.8.8.8
-
request_elevation
false
-
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 3 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 33 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1.1.1.1.exe"C:\Users\Admin\AppData\Local\Temp\1.1.1.1.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)\DPI Host\dpihost.exe"C:\Program Files (x86)\DPI Host\dpihost.exe"1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
dpihost.exe
memory/2852-7-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/2852-8-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/2852-10-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/5196-0-0x00000000752E1000-0x00000000752E2000-memory.dmp
memory/5196-1-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/5196-4-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/5196-11-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/5196-12-0x00000000752E0000-0x0000000075891000-memory.dmp