Analysis
- max time kernel
144s - max time network
149s - platform
windows10_x64 - resource
win10v20201028 - submitted
31/12/2020, 18:08
General
- Target 27-sample1.exe
- Size 218KB
- Sample201231-tj6ea15en6
- SHA256 a44e9e5a6470bb6d889366581e7f99eebc60099ff0fe7b7a6e39b38f7315cb0f
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
mranubis.ddns.net:54984
-
127.0.0.1:54984
-
c91cbec2-cb9b-41dc-905a-a9a1fe60b360
-
activate_away_mode
true
-
backup_connection_host
127.0.0.1
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-10-08T22:18:02.201490936Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
54984
-
default_group
Default
-
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
c91cbec2-cb9b-41dc-905a-a9a1fe60b360
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
mranubis.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.
- 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 3 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\27-sample1.exe"C:\Users\Admin\AppData\Local\Temp\27-sample1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\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/640-2-0x0000000073DC0000-0x00000000744AE000-memory.dmp
memory/640-3-0x0000000000BF0000-0x0000000000BF1000-memory.dmp
memory/640-5-0x00000000054D0000-0x00000000054D1000-memory.dmp
memory/640-6-0x00000000016B0000-0x00000000016E6000-memory.dmp
memory/640-7-0x0000000002FB0000-0x0000000002FB1000-memory.dmp
memory/3712-8-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3712-10-0x0000000073D20000-0x000000007440E000-memory.dmp
memory/3712-13-0x0000000005A40000-0x0000000005A41000-memory.dmp
memory/3712-14-0x0000000005540000-0x0000000005541000-memory.dmp
memory/3712-15-0x00000000055E0000-0x00000000055E1000-memory.dmp
memory/3712-16-0x00000000054F0000-0x00000000054F1000-memory.dmp
memory/3712-17-0x0000000005850000-0x0000000005855000-memory.dmp
memory/3712-18-0x00000000061C0000-0x00000000061D9000-memory.dmp
memory/3712-19-0x00000000061E0000-0x00000000061E3000-memory.dmp