Analysis
- max time kernel
149s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
11/05/2026, 10:17
General
- Target trueluck.exe
- Size 202KB
- Sample260511-mbmcfsat2q
- SHA256 52606af87db4f804abc2acc4d07ef73f7dd1687defe42e33a5a7e6b674923b23
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
true-religionjeans.in.net:443
-
ae888.ru.com:443
-
fd0f8890-663c-4710-9b8f-5f1b7e0de298
-
activate_away_mode
false
-
backup_connection_host
ae888.ru.com
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2026-02-20T11:42:24.539952736Z
-
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
TrueLuck Denim
-
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
fd0f8890-663c-4710-9b8f-5f1b7e0de298
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
true-religionjeans.in.net
-
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 12 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\trueluck.exe"C:\Users\Admin\AppData\Local\Temp\trueluck.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)\SMTP Service\smtpsv.exe"C:\Program Files (x86)\SMTP Service\smtpsv.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
smtpsv.exe
memory/4756-13-0x00000000753B0000-0x0000000075961000-memory.dmp
memory/4756-15-0x0000000006200000-0x0000000006263000-memory.dmp
memory/4756-1-0x00000000753B2000-0x00000000753B4000-memory.dmp
memory/4756-24-0x0000000006200000-0x0000000006263000-memory.dmp
memory/4756-20-0x0000000006200000-0x0000000006263000-memory.dmp
memory/4756-17-0x0000000006200000-0x0000000006263000-memory.dmp
memory/4756-11-0x0000000000C90000-0x0000000000CA0000-memory.dmp
memory/4756-12-0x00000000753B2000-0x00000000753B4000-memory.dmp
memory/4756-0-0x0000000000C90000-0x0000000000CA0000-memory.dmp
memory/4756-14-0x0000000006200000-0x0000000006263000-memory.dmp
memory/4756-4-0x00000000753B0000-0x0000000075961000-memory.dmp
memory/5164-10-0x00000000753B0000-0x0000000075961000-memory.dmp
memory/5164-8-0x00000000753B0000-0x0000000075961000-memory.dmp
memory/5164-7-0x00000000753B0000-0x0000000075961000-memory.dmp