nanocore | e843cd8a1f16a71c363c7b4f880c51c37b8e40404f4b09f49bf73f18fd357e52

General

Target
PO-54764456.AZ.r11.exe
Size 364KB
Sample201109-n4br2e1ryx
SHA256 e843cd8a1f16a71c363c7b4f880c51c37b8e40404f4b09f49bf73f18fd357e52
MD5 608b0bdce6dcaa24d313cc6fa756e7d3
SHA1 c2b41b2cca7fefd3a8ba090b939f9ce301dd6140
SHA512 86cfc84f37e7bb5793ede6912ac749670cd0a11495938509adcb9496ed87af7277a67e5ceea6d38bf56ae74930c28502f827ad0fb53c74e311a58aaaf3b60e21
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

adikaremix.linkpc.net:1790
185.140.53.13:1790

Mutex

9493864b-27d9-4410-9dcc-9a0c4732a1d5

Attributes

activate_away_mode
true
backup_connection_host
185.140.53.13
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-21T11:14:38.887176036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1790
default_group
June@@
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
9493864b-27d9-4410-9dcc-9a0c4732a1d5
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
adikaremix.linkpc.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.
keylogger trojan stealer spyware nanocore

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Service = "C:\\Program Files (x86)\\WAN Service\\wansv.exe"	PO-54764456.AZ.r11.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	PO-54764456.AZ.r11.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3988 set thread context of 3960	3988	PO-54764456.AZ.r11.exe	81

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WAN Service\wansv.exe	PO-54764456.AZ.r11.exe
File opened for modification	C:\Program Files (x86)\WAN Service\wansv.exe	PO-54764456.AZ.r11.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3960	PO-54764456.AZ.r11.exe
3960	PO-54764456.AZ.r11.exe
3960	PO-54764456.AZ.r11.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3960	PO-54764456.AZ.r11.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3960	PO-54764456.AZ.r11.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 1728	3988	PO-54764456.AZ.r11.exe	79
PID 3988 wrote to memory of 1728	3988	PO-54764456.AZ.r11.exe	79
PID 3988 wrote to memory of 1728	3988	PO-54764456.AZ.r11.exe	79
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81
PID 3988 wrote to memory of 3960	3988	PO-54764456.AZ.r11.exe	81

C:\Users\Admin\AppData\Local\Temp\PO-54764456.AZ.r11.exe
"C:\Users\Admin\AppData\Local\Temp\PO-54764456.AZ.r11.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aLdebLCgiuUejE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp95EC.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1728
- C:\Users\Admin\AppData\Local\Temp\PO-54764456.AZ.r11.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:3960