nanocore | e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

General

Target

nass.exe
Size

492KB
MD5

03426261381cc6c80f3a5d915facdaad
SHA1

68488e8388ea7e86b96710f053d69c099017ac83
SHA256

e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73
SHA512

955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.183:83

nazareen12.ddns.net:83

Mutex

d2cffe5f-f975-4612-95e5-321d5f1a67bf

Attributes

activate_away_mode
true
backup_connection_host
nazareen12.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-11-09T21:54:08.609335036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
83
default_group
A Good Start
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
d2cffe5f-f975-4612-95e5-321d5f1a67bf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.140.53.183
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

nass.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA nass.exe
Suspicious use of SetThreadContext 2 IoCs

Processes:

nass.exe

description pid process target process

PID 1676 set thread context of 2040 1676 nass.exe nass.exe
PID 1676 set thread context of 1744 1676 nass.exe nass.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

nass.exe

pid process

1744 nass.exe
1744 nass.exe
1744 nass.exe
1744 nass.exe
1744 nass.exe
1744 nass.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

nass.exe

pid process

1744 nass.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

nass.exe

description pid process

Token: SeDebugPrivilege 1744 nass.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

nass.exe

pid process

1676 nass.exe
1676 nass.exe

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

description	pid	process	target process
PID 1676 set thread context of 2040	1676	nass.exe	nass.exe
PID 1676 set thread context of 1744	1676	nass.exe	nass.exe

pid	process
1744	nass.exe
1744	nass.exe
1744	nass.exe
1744	nass.exe
1744	nass.exe
1744	nass.exe

pid	process
1744	nass.exe

description	pid	process
Token: SeDebugPrivilege	1744	nass.exe

pid	process
1676	nass.exe
1676	nass.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

nass.exe

description	pid	process	target process
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 2040	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe
PID 1676 wrote to memory of 1744	1676	nass.exe	nass.exe

C:\Users\Admin\AppData\Local\Temp\nass.exe
"C:\Users\Admin\AppData\Local\Temp\nass.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1676

C:\Users\Admin\AppData\Local\Temp\nass.exe
"C:\Users\Admin\AppData\Local\Temp\nass.exe"
2⤵
PID:2040

C:\Users\Admin\AppData\Local\Temp\nass.exe
"C:\Users\Admin\AppData\Local\Temp\nass.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1676-14-0x0000000001F56000-0x0000000001F57000-memory.dmp

Filesize
4KB

Download
memory/1676-3-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/1676-5-0x0000000001F40000-0x0000000001F41000-memory.dmp

Filesize
4KB

Download
memory/1676-6-0x0000000001F00000-0x0000000001F03000-memory.dmp

Filesize
12KB

Download
memory/1676-16-0x0000000001F57000-0x0000000001F58000-memory.dmp

Filesize
4KB

Download
memory/1676-2-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/1676-12-0x0000000001F45000-0x0000000001F56000-memory.dmp

Filesize
68KB

Download
memory/1744-28-0x0000000004750000-0x0000000004751000-memory.dmp

Filesize
4KB

Download
memory/1744-24-0x0000000000600000-0x0000000000619000-memory.dmp

Filesize
100KB

Download
memory/1744-17-0x000000000041E792-mapping.dmp

Download
memory/1744-26-0x00000000008A0000-0x00000000008AF000-memory.dmp

Filesize
60KB

Download
memory/1744-25-0x0000000000840000-0x0000000000843000-memory.dmp

Filesize
12KB

Download
memory/1744-18-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/1744-21-0x00000000004D0000-0x00000000004D5000-memory.dmp

Filesize
20KB

Download
memory/1744-22-0x00000000005A0000-0x00000000005AD000-memory.dmp

Filesize
52KB

Download
memory/1744-23-0x00000000005F0000-0x00000000005FA000-memory.dmp

Filesize
40KB

Download
memory/2040-8-0x000000000041E792-mapping.dmp

Download
memory/2040-9-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/2040-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2040-27-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/2040-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

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