nanocore | e9c3fc00ddb08ef196d05b56ce0c83c04381de42e8777e902e3e9c7afe4a9f11

General

Target
65d1beae1fc7eb126cd4a9b277afb942.exe
Size 771KB
Sample210215-p71t8repqs
SHA256 e9c3fc00ddb08ef196d05b56ce0c83c04381de42e8777e902e3e9c7afe4a9f11
MD5 10d4a5471e7e6d37cc86e3b430cfd3e1
SHA1 5003aa9f08bb00bd6da098b1d73c6703d6c354ab
SHA512 90df4704b82a7bf308882580453fc5b2b98ddc314c40e29044292a995f7c790737a45c656a57eaedb33de03e72fb314fefd788bb33dae3326e562a251e8a2ab4
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

cloudhost.myfirewall.org:5654

Mutex

5d933387-98af-4000-b1dd-ee5d19b70f3d

Attributes

activate_away_mode
true
backup_connection_host
cloudhost.myfirewall.org
backup_dns_server
cloudhost.myfirewall.org
buffer_size
65535
build_time
2020-11-13T08:57:28.843251936Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5654
default_group
0006
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
5d933387-98af-4000-b1dd-ee5d19b70f3d
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
cloudhost.myfirewall.org
primary_dns_server
cloudhost.myfirewall.org
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"	65d1beae1fc7eb126cd4a9b277afb942.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	65d1beae1fc7eb126cd4a9b277afb942.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1108 set thread context of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WAN Service\wansv.exe	65d1beae1fc7eb126cd4a9b277afb942.exe
File created	C:\Program Files (x86)\WAN Service\wansv.exe	65d1beae1fc7eb126cd4a9b277afb942.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1172	schtasks.exe
2892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3540	65d1beae1fc7eb126cd4a9b277afb942.exe
3540	65d1beae1fc7eb126cd4a9b277afb942.exe
3540	65d1beae1fc7eb126cd4a9b277afb942.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3540	65d1beae1fc7eb126cd4a9b277afb942.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3540	65d1beae1fc7eb126cd4a9b277afb942.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 1108 wrote to memory of 3540	1108	65d1beae1fc7eb126cd4a9b277afb942.exe	79
PID 3540 wrote to memory of 1172	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	80
PID 3540 wrote to memory of 1172	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	80
PID 3540 wrote to memory of 1172	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	80
PID 3540 wrote to memory of 2892	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	82
PID 3540 wrote to memory of 2892	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	82
PID 3540 wrote to memory of 2892	3540	65d1beae1fc7eb126cd4a9b277afb942.exe	82

C:\Users\Admin\AppData\Local\Temp\65d1beae1fc7eb126cd4a9b277afb942.exe
"C:\Users\Admin\AppData\Local\Temp\65d1beae1fc7eb126cd4a9b277afb942.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Local\Temp\65d1beae1fc7eb126cd4a9b277afb942.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
  - Suspicious use of WriteProcessMemory
  PID:3540
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDBB0.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1172
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "WAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDC3D.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:2892