nanocore | 0b5b77eb2568ffc85d47fa2e1f2924d3e31e981c99c3d15b5123f3f70dcf3331

General

Target

CV.exe
Size

644KB
MD5

657c89503e55e88a1e0c1390fee464a3
SHA1

5c4382f2e661b25d190c7e57ebb22759715abf85
SHA256

0b5b77eb2568ffc85d47fa2e1f2924d3e31e981c99c3d15b5123f3f70dcf3331
SHA512

f508f4401f9fad820cadf438ce3d19430b440b7db423fb40d53ac5c10e434b7522b8f409568f78b63fab2275baa149e95dc7127c2e5fb1dee929914d80cded3e

Score

10^/10

nanocore evasion keylogger spyware stealer suricata trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.hopto.org:5899

136.144.41.240:5899

Mutex

11328c70-ca51-4fd0-b253-500cee871738

Attributes

activate_away_mode
true
backup_connection_host
136.144.41.240
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-03-27T23:04:39.086047636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5899
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
11328c70-ca51-4fd0-b253-500cee871738
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brewsterchristophe.hopto.org
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
suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
suricata
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

CV.exe

description ioc process

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

Processes:

CV.exe

description pid process target process

PID 2852 set thread context of 2076 2852 CV.exe CV.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

CV.exe

pid process

2076 CV.exe
2076 CV.exe
2076 CV.exe
2076 CV.exe
2076 CV.exe
2076 CV.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

CV.exe

pid process

2076 CV.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

CV.exe

description pid process

Token: SeDebugPrivilege 2076 CV.exe

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

description	pid	process	target process
PID 2852 set thread context of 2076	2852	CV.exe	CV.exe

pid	process
2076	CV.exe
2076	CV.exe
2076	CV.exe
2076	CV.exe
2076	CV.exe
2076	CV.exe

pid	process
2076	CV.exe

description	pid	process
Token: SeDebugPrivilege	2076	CV.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

CV.exe

description	pid	process	target process
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe
PID 2852 wrote to memory of 2076	2852	CV.exe	CV.exe

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
PID:2852

C:\Users\Admin\AppData\Local\Temp\CV.exe
"C:\Users\Admin\AppData\Local\Temp\CV.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2076

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/2076-136-0x0000000000000000-mapping.dmp

Download
memory/2076-137-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2852-130-0x0000000000E10000-0x0000000000EB6000-memory.dmp

Filesize
664KB

Download
memory/2852-131-0x0000000005EA0000-0x0000000006444000-memory.dmp

Filesize
5.6MB

Download
memory/2852-132-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/2852-133-0x0000000005870000-0x000000000587A000-memory.dmp

Filesize
40KB

Download
memory/2852-134-0x0000000009400000-0x000000000949C000-memory.dmp

Filesize
624KB

Download
memory/2852-135-0x0000000009550000-0x00000000095B6000-memory.dmp

Filesize
408KB

Download

Analysis

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