Analysis
- max time kernel
113s - max time network
118s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
07/10/2024, 07:35
General
- Target 502e2fd57652e217cbe36ae9d37c4a73abf8ab444ee69b25f5504a39795cf131N.exe
- Size 415KB
- Sample241007-jeqbqstdmj
- SHA256 502e2fd57652e217cbe36ae9d37c4a73abf8ab444ee69b25f5504a39795cf131
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\502e2fd57652e217cbe36ae9d37c4a73abf8ab444ee69b25f5504a39795cf131N.exe"C:\Users\Admin\AppData\Local\Temp\502e2fd57652e217cbe36ae9d37c4a73abf8ab444ee69b25f5504a39795cf131N.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/1032-21-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/1032-1-0x0000000000470000-0x00000000004DE000-memory.dmp
memory/1032-2-0x0000000005440000-0x00000000059E4000-memory.dmp
memory/1032-3-0x0000000004F30000-0x0000000004FC2000-memory.dmp
memory/1032-4-0x0000000004EE0000-0x0000000004EEA000-memory.dmp
memory/1032-5-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/1032-6-0x0000000005280000-0x00000000052BC000-memory.dmp
memory/1032-0-0x0000000074B1E000-0x0000000074B1F000-memory.dmp
memory/2812-28-0x0000000004ED0000-0x0000000004F6C000-memory.dmp
memory/2812-23-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2812-25-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2812-24-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2812-27-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/2812-30-0x0000000004EA0000-0x0000000004EAA000-memory.dmp
memory/2812-31-0x0000000005110000-0x000000000512E000-memory.dmp
memory/2812-32-0x0000000005D70000-0x0000000005D7A000-memory.dmp
memory/2812-36-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/3940-22-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/3940-20-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/3940-33-0x0000000074B10000-0x00000000752C0000-memory.dmp
memory/3940-35-0x0000000074B10000-0x00000000752C0000-memory.dmp