Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
09/12/2024, 04:26
General
- Target e735b010cab5db20dd44929b04af40b834283dccdf6d7c8f2c88a8836ac18d50.exe
- Size 415KB
- Sample241209-e2mf5szkdz
- SHA256 e735b010cab5db20dd44929b04af40b834283dccdf6d7c8f2c88a8836ac18d50
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.
- Nanocore family
- 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\e735b010cab5db20dd44929b04af40b834283dccdf6d7c8f2c88a8836ac18d50.exe"C:\Users\Admin\AppData\Local\Temp\e735b010cab5db20dd44929b04af40b834283dccdf6d7c8f2c88a8836ac18d50.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/2304-25-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2304-36-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/2304-32-0x0000000004DE0000-0x0000000004DEA000-memory.dmp
memory/2304-31-0x00000000056D0000-0x00000000056EE000-memory.dmp
memory/2304-30-0x0000000004A40000-0x0000000004A4A000-memory.dmp
memory/2304-28-0x0000000004A60000-0x0000000004AFC000-memory.dmp
memory/2304-27-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/2304-24-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2304-23-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2308-5-0x00000000052B0000-0x00000000052BA000-memory.dmp
memory/2308-21-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/2308-6-0x0000000005E80000-0x0000000005EBC000-memory.dmp
memory/2308-0-0x0000000074DDE000-0x0000000074DDF000-memory.dmp
memory/2308-4-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/2308-3-0x0000000005320000-0x00000000053B2000-memory.dmp
memory/2308-2-0x00000000058D0000-0x0000000005E74000-memory.dmp
memory/2308-1-0x0000000000860000-0x00000000008CE000-memory.dmp
memory/4352-22-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/4352-20-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/4352-33-0x0000000074DD0000-0x0000000075580000-memory.dmp
memory/4352-35-0x0000000074DD0000-0x0000000075580000-memory.dmp