nanocore | c7e73c4c0aa5c1ec7f90db1c6be8c1dfb33205583e04f5b963fcc5f3ff921e6e

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 14:54

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General

Target

ufyabb.exe
Size

526KB
MD5

101a2de82607b0f99ef5d4a810896c9b
SHA1

34c52d9c349da842c27e76afb716227857a57cdb
SHA256

d3aa0b25ae8642adba83223811333cada5ffeaad584b7391b03e0f7fb28d864f
SHA512

2a62c1c7a319437f94f5f913f27a55a1274284eccdec5effa4689f9630ab64359c751375c8bac3d1af952bf2232a7230fa7044c6d1d588cc4f37c474117ee278
SSDEEP

12288:6u6VOlbAbXXlMAXyD54HOU36Xkno+A48vEgnVw7xMuJYjZXU7CSU:6u6VOlbAbXXlMGqkE+8vEwg6Zr

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

kennynanobelintourismedleonline.dumb1.com:7072

Mutex

6b1312cb-72d0-4da8-8182-e917f5887e6c

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-09-30T11:54:33.233317936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
7072
default_group
Mr Smart
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
6b1312cb-72d0-4da8-8182-e917f5887e6c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
kennynanobelintourismedleonline.dumb1.com
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ufyabb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Acrobat = "C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Acrobat!.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ufyabb.exe\""	ufyabb.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ufyabb.exe

description pid process target process

PID 1940 set thread context of 4936 1940 ufyabb.exe ufyabb.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3140 4936 WerFault.exe ufyabb.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

ufyabb.exe

pid process

1940 ufyabb.exe
1940 ufyabb.exe

description	pid	process	target process
PID 1940 set thread context of 4936	1940	ufyabb.exe	ufyabb.exe

pid	pid_target	process	target process
3140	4936	WerFault.exe	ufyabb.exe

pid	process
1940	ufyabb.exe
1940	ufyabb.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

ufyabb.exe

description	pid	process	target process
PID 1940 wrote to memory of 4936	1940	ufyabb.exe	ufyabb.exe
PID 1940 wrote to memory of 4936	1940	ufyabb.exe	ufyabb.exe
PID 1940 wrote to memory of 4936	1940	ufyabb.exe	ufyabb.exe
PID 1940 wrote to memory of 4936	1940	ufyabb.exe	ufyabb.exe

C:\Users\Admin\AppData\Local\Temp\ufyabb.exe
"C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1940

C:\Users\Admin\AppData\Local\Temp\ufyabb.exe
"C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"
2⤵
PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 396
3⤵
- Program crash
PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4936 -ip 4936
1⤵
PID:5096

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1940-0-0x0000000000FF0000-0x0000000000FF2000-memory.dmp

Filesize
8KB

Download
memory/4936-2-0x0000000000700000-0x000000000074B000-memory.dmp

Filesize
300KB

Download
memory/4936-7-0x0000000000700000-0x000000000074B000-memory.dmp

Filesize
300KB

Download
memory/4936-11-0x0000000000700000-0x000000000074B000-memory.dmp

Filesize
300KB

Download