Analysis
- max time kernel
117s - max time network
119s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
22/11/2024, 09:47
General
- Target 1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe
- Size 434KB
- Sample241122-lslltavjbp
- SHA256 1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
37.0.10.137:9025
-
b7d9d933-745d-49c1-bd0c-e06768b05c24
-
activate_away_mode
true
-
backup_connection_host
37.0.10.137
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-08-01T05:05:17.189046036Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
9025
-
default_group
LYDECKER
-
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
b7d9d933-745d-49c1-bd0c-e06768b05c24
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
37.0.10.137
-
primary_dns_server
8.8.8.8
-
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.
- 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.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AFUUjo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4958.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"2⤵
- 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
1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe.log
memory/1348-16-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1348-27-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/1348-26-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/1348-25-0x0000000005780000-0x000000000578A000-memory.dmp
memory/1348-24-0x0000000005980000-0x000000000599E000-memory.dmp
memory/1348-23-0x0000000005730000-0x000000000573A000-memory.dmp
memory/1348-21-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/1348-19-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/2228-10-0x0000000008070000-0x00000000080CC000-memory.dmp
memory/2228-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp
memory/2228-9-0x0000000007F20000-0x0000000007FBC000-memory.dmp
memory/2228-8-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/2228-7-0x0000000074C4E000-0x0000000074C4F000-memory.dmp
memory/2228-6-0x0000000005280000-0x000000000528E000-memory.dmp
memory/2228-20-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/2228-5-0x0000000074C40000-0x00000000753F0000-memory.dmp
memory/2228-4-0x0000000004FD0000-0x0000000004FDA000-memory.dmp
memory/2228-3-0x0000000005020000-0x00000000050B2000-memory.dmp
memory/2228-2-0x0000000005710000-0x0000000005CB4000-memory.dmp
memory/2228-1-0x0000000000560000-0x00000000005D2000-memory.dmp