Analysis
- max time kernel
51s - max time network
60s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
20/09/2024, 19:24
General
- Target b88d0d35d337464fa0c7c889fd52cf8adefba802800759087f3798739ac68b7b.exe
- Size 414KB
- Sample240920-x4h6lstdkb
- SHA256 b88d0d35d337464fa0c7c889fd52cf8adefba802800759087f3798739ac68b7b
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\b88d0d35d337464fa0c7c889fd52cf8adefba802800759087f3798739ac68b7b.exe"C:\Users\Admin\AppData\Local\Temp\b88d0d35d337464fa0c7c889fd52cf8adefba802800759087f3798739ac68b7b.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/1176-21-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/1176-1-0x0000000000FD0000-0x000000000103E000-memory.dmp
memory/1176-2-0x0000000006100000-0x00000000066A4000-memory.dmp
memory/1176-3-0x0000000005A30000-0x0000000005AC2000-memory.dmp
memory/1176-4-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/1176-5-0x0000000005AD0000-0x0000000005ADA000-memory.dmp
memory/1176-6-0x0000000005DE0000-0x0000000005E1C000-memory.dmp
memory/1176-0-0x000000007536E000-0x000000007536F000-memory.dmp
memory/1212-22-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/1212-20-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/1212-33-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/1212-35-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/4532-25-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4532-24-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4532-23-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4532-27-0x0000000075360000-0x0000000075B10000-memory.dmp
memory/4532-28-0x0000000005170000-0x000000000520C000-memory.dmp
memory/4532-30-0x00000000050B0000-0x00000000050BA000-memory.dmp
memory/4532-31-0x0000000005650000-0x000000000566E000-memory.dmp
memory/4532-32-0x0000000006020000-0x000000000602A000-memory.dmp
memory/4532-36-0x0000000075360000-0x0000000075B10000-memory.dmp