Analysis
- max time kernel
120s - max time network
120s - platform
windows10-2004_x64 - resource
win10v2004-20250211-en - resource tags
- submitted
12/02/2025, 18:34
General
- Target 672c52fb6631db0e7e6e26662c749320598ee61a74378544a4381bc61905cacaN.exe
- Size 1.0MB
- Sample250212-w73traspcv
- SHA256 672c52fb6631db0e7e6e26662c749320598ee61a74378544a4381bc61905caca
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
testwork.kozow.com:8906
-
bd6fc7b5-d48b-4e23-98f7-784bd3ef305c
-
activate_away_mode
true
-
backup_connection_host
testwork.kozow.com
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2019-02-16T16:47:25.218235636Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
8906
-
default_group
star
-
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
bd6fc7b5-d48b-4e23-98f7-784bd3ef305c
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
testwork.kozow.com
-
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
- Downloads MZ/PE file 1 IoCs
- Drops startup file 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- AutoIT Executable 12 IoCs
AutoIT scripts compiled to PE executables.
- Suspicious use of SetThreadContext 1 IoCs
- UPX packed file 13 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 3 IoCs
- Suspicious use of SendNotifyMessage 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\672c52fb6631db0e7e6e26662c749320598ee61a74378544a4381bc61905cacaN.exe"C:\Users\Admin\AppData\Local\Temp\672c52fb6631db0e7e6e26662c749320598ee61a74378544a4381bc61905cacaN.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTc0NDg3MzAwIi8-PC9hcHA-PC9yZXF1ZXN0Pg1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/688-20-0x0000000073A02000-0x0000000073A03000-memory.dmp
memory/688-22-0x0000000073A00000-0x0000000073FB1000-memory.dmp
memory/688-7-0x0000000000630000-0x0000000000668000-memory.dmp
memory/688-12-0x0000000073A02000-0x0000000073A03000-memory.dmp
memory/688-13-0x0000000073A00000-0x0000000073FB1000-memory.dmp
memory/688-21-0x0000000073A00000-0x0000000073FB1000-memory.dmp
memory/688-15-0x0000000073A00000-0x0000000073FB1000-memory.dmp
memory/4412-14-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-25-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-17-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-0-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-6-0x0000000000B10000-0x0000000000B11000-memory.dmp
memory/4412-23-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-24-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-19-0x0000000000B10000-0x0000000000B11000-memory.dmp
memory/4412-26-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-27-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-28-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-29-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-30-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-31-0x0000000000D50000-0x0000000000F01000-memory.dmp
memory/4412-32-0x0000000000D50000-0x0000000000F01000-memory.dmp