Analysis
- max time kernel
112s - max time network
120s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
03/10/2024, 09:40
General
- Target 941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe
- Size 415KB
- Sample241003-lnmnbawenn
- SHA256 941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
[email protected]:46218
-
178.32.224.116:46218
-
4af74541-e3f1-469c-8af7-efe4071b81cf
-
activate_away_mode
false
-
backup_connection_host
178.32.224.116
- backup_dns_server
-
buffer_size
65535
-
build_time
2018-07-28T12:59:38.488799236Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
false
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
46218
-
default_group
tourex
-
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
4af74541-e3f1-469c-8af7-efe4071b81cf
-
mutex_timeout
5000
-
prevent_system_sleep
false
- primary_connection_host
- primary_dns_server
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
- NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe"C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"3⤵
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
ximo2ubzn1i.exe
memory/2728-24-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2728-36-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/2728-32-0x0000000005490000-0x000000000549A000-memory.dmp
memory/2728-31-0x00000000050D0000-0x00000000050EE000-memory.dmp
memory/2728-30-0x00000000050C0000-0x00000000050CA000-memory.dmp
memory/2728-28-0x0000000004F90000-0x000000000502C000-memory.dmp
memory/2728-27-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/2728-23-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2728-25-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3472-5-0x00000000054D0000-0x00000000054DA000-memory.dmp
memory/3472-20-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/3472-6-0x0000000005A90000-0x0000000005ACC000-memory.dmp
memory/3472-0-0x00000000745CE000-0x00000000745CF000-memory.dmp
memory/3472-4-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/3472-3-0x0000000005540000-0x00000000055D2000-memory.dmp
memory/3472-2-0x0000000005AF0000-0x0000000006094000-memory.dmp
memory/3472-1-0x0000000000A60000-0x0000000000ACE000-memory.dmp
memory/4320-22-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/4320-21-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/4320-33-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/4320-35-0x00000000745C0000-0x0000000074D70000-memory.dmp