Analysis
- max time kernel
149s - max time network
150s - platform
windows7_x64 - resource
win7v20201028 - submitted
13/11/2020, 15:38
General
- Target a3e724b97b1ecaf3013d82a2de63a38e85cd7bde39a86f9d59794dcf7aec41b8.exe
- Size 1.1MB
- Sample201113-pbackc6nr6
- SHA256 a3e724b97b1ecaf3013d82a2de63a38e85cd7bde39a86f9d59794dcf7aec41b8
Score
10/10
Malware Config
Extracted
Family
-
nanocore
Version
-
1.2.2.0
C2
-
windowslivesoffice.ddns.net:20377
-
127.0.0.1:20377
Mutex
-
ebebb95b-836f-4d8b-92f1-dafac3cec9d8
Attributes
-
activate_away_mode
true
-
backup_connection_host
127.0.0.1
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2019-03-14T13:33:18.176993536Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
20377
-
default_group
02/06/2019
-
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
ebebb95b-836f-4d8b-92f1-dafac3cec9d8
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
windowslivesoffice.ddns.net
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
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.
- Drops startup file 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 2 IoCs
- Suspicious behavior: EnumeratesProcesses 16 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 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a3e724b97b1ecaf3013d82a2de63a38e85cd7bde39a86f9d59794dcf7aec41b8.exe"C:\Users\Admin\AppData\Local\Temp\a3e724b97b1ecaf3013d82a2de63a38e85cd7bde39a86f9d59794dcf7aec41b8.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- 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⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2000-0-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2000-2-0x0000000000090000-0x00000000000C8000-memory.dmp