Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
11/02/2022, 22:38
General
- Target CV.exe
- Size 784KB
- Sample220211-2kdh8sehbk
- SHA256 e6cc1b2289fea61671ed9f96511db21d748427bcd185f4e8d1d96e828f8cde4b
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
derarawfile10.ddns.net:1187
-
212.192.246250:1187
-
c48b433d-6e7a-4320-ac18-2f1271be71c2
-
activate_away_mode
true
-
backup_connection_host
212.192.246250
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-10-24T01:22:01.779231836Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1187
-
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
c48b433d-6e7a-4320-ac18-2f1271be71c2
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
derarawfile10.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.
- suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
- 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
- Drops file in Program Files directory 2 IoCs
- Drops file in Windows directory 8 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\CV.exe"C:\Users\Admin\AppData\Local\Temp\CV.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\CV.exe"C:\Users\Admin\AppData\Local\Temp\CV.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3232-140-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3232-144-0x0000000006EA0000-0x0000000006F06000-memory.dmp
memory/3232-143-0x00000000058F0000-0x00000000058F1000-memory.dmp
memory/3232-142-0x000000007444E000-0x000000007444F000-memory.dmp
memory/4180-139-0x0000000009950000-0x00000000099EC000-memory.dmp
memory/4180-130-0x00000000007D0000-0x000000000089A000-memory.dmp
memory/4180-135-0x0000000007990000-0x0000000007991000-memory.dmp
memory/4180-134-0x0000000007720000-0x000000000772A000-memory.dmp
memory/4180-133-0x000000007444E000-0x000000007444F000-memory.dmp
memory/4180-132-0x0000000007730000-0x00000000077C2000-memory.dmp
memory/4180-131-0x0000000007C00000-0x00000000081A4000-memory.dmp
memory/4348-136-0x000001D316F20000-0x000001D316F30000-memory.dmp
memory/4348-137-0x000001D316F80000-0x000001D316F90000-memory.dmp
memory/4348-138-0x000001D319630000-0x000001D319634000-memory.dmp