nanocore | 17844b8e81e8b70e0baa19712c07e4db339c4410cf8f513750a5af94d8f8165d

General

Target

PO.exe
Size

292KB
MD5

b51c6b42fbe1c750f7dd6ea1aa326a3b
SHA1

6e455e9c20411ef787b1a912ef92f0a5bac027f3
SHA256

5d91a0233b2cd95d7a40c235dd6ab58d92c2b68447ce6920253db1c3100817ce
SHA512

a299271633a7bf63feb28cfbdff07f881afe688030bf32b5da85fab537b9db68479901a5784a9981b204fe6e786413131d8d52e3529a26dfab89ea10ac6419e8

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.193.75.228:4540

127.0.0.1:4540

Mutex

2f0ee585-e6d3-4398-a06b-4f15250fb773

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-21T18:05:11.253241836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
4540
default_group
haha
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
2f0ee585-e6d3-4398-a06b-4f15250fb773
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
91.193.75.228
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
Executes dropped EXE 1 IoCs

Processes:

PO.exe

pid process

1540 PO.exe
Loads dropped DLL 1 IoCs

Processes:

PO.exe

pid process

1780 PO.exe

pid	process
1540	PO.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Subsystem = "C:\\Program Files (x86)\\WPA Subsystem\\wpass.exe"	PO.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

PO.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA PO.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

PO.exe

description pid process target process

PID 1780 set thread context of 1540 1780 PO.exe PO.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	PO.exe

description	pid	process	target process
PID 1780 set thread context of 1540	1780	PO.exe	PO.exe

Drops file in Program Files directory 2 IoCs

Processes:

PO.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\WPA Subsystem\wpass.exe	PO.exe
File created	C:\Program Files (x86)\WPA Subsystem\wpass.exe	PO.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

PO.exePO.exe

pid	process
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1780	PO.exe
1540	PO.exe
1540	PO.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PO.exe

pid process

1540 PO.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO.exePO.exe

description pid process

Token: SeDebugPrivilege 1780 PO.exe
Token: SeDebugPrivilege 1540 PO.exe

pid	process
1540	PO.exe

description	pid	process
Token: SeDebugPrivilege	1780	PO.exe
Token: SeDebugPrivilege	1540	PO.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

PO.exe

description	pid	process	target process
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe
PID 1780 wrote to memory of 1540	1780	PO.exe	PO.exe

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
2⤵
- Executes dropped EXE
- 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:1540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\PO.exe
Filesize
292KB

MD5
b51c6b42fbe1c750f7dd6ea1aa326a3b

SHA1
6e455e9c20411ef787b1a912ef92f0a5bac027f3

SHA256
5d91a0233b2cd95d7a40c235dd6ab58d92c2b68447ce6920253db1c3100817ce

SHA512
a299271633a7bf63feb28cfbdff07f881afe688030bf32b5da85fab537b9db68479901a5784a9981b204fe6e786413131d8d52e3529a26dfab89ea10ac6419e8

Download Submit
\Users\Admin\AppData\Local\Temp\PO.exe
Filesize
292KB

MD5
b51c6b42fbe1c750f7dd6ea1aa326a3b

SHA1
6e455e9c20411ef787b1a912ef92f0a5bac027f3

SHA256
5d91a0233b2cd95d7a40c235dd6ab58d92c2b68447ce6920253db1c3100817ce

SHA512
a299271633a7bf63feb28cfbdff07f881afe688030bf32b5da85fab537b9db68479901a5784a9981b204fe6e786413131d8d52e3529a26dfab89ea10ac6419e8

Download Submit
memory/1540-68-0x000000000041E792-mapping.dmp

Download
memory/1540-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-77-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/1540-76-0x00000000003D0000-0x00000000003EE000-memory.dmp

Filesize
120KB

Download
memory/1540-75-0x00000000003C0000-0x00000000003CA000-memory.dmp

Filesize
40KB

Download
memory/1540-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-73-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1540-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1780-55-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download
memory/1780-54-0x0000000000EA0000-0x0000000000EEE000-memory.dmp

Filesize
312KB

Download
memory/1780-57-0x0000000000580000-0x00000000005C2000-memory.dmp

Filesize
264KB

Download
memory/1780-56-0x0000000000230000-0x0000000000238000-memory.dmp

Filesize
32KB

Download
memory/1780-59-0x0000000000680000-0x0000000000688000-memory.dmp

Filesize
32KB

Download
memory/1780-58-0x0000000000440000-0x0000000000456000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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