nanocore | 7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440

General

Target

7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe
Size

278KB
MD5

9184f5597b1f84df95f157073b015930
SHA1

14aea29dc251d46b3714e08ccd0e6aca8e9b0981
SHA256

7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440
SHA512

89899a55f7c426fb46392267a7ee3102370710d29c7036ca07c46db77d16a5abc86df7d3277a981d03eaff31f81cc39ab6fe50227481485fb286e132854d03d2
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fN:boSeGUA5YZazpXUmZhZ6F

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
primary_dns_server
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
Nanocore family
nanocore

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe

Executes dropped EXE 2 IoCs

pid	Process
4844	a1punf5t2of.exe
3864	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.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	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4844 set thread context of 3864	4844	a1punf5t2of.exe	99

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3864	a1punf5t2of.exe
3864	a1punf5t2of.exe
3864	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3864	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3864	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 4844	1560	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	98
PID 1560 wrote to memory of 4844	1560	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	98
PID 1560 wrote to memory of 4844	1560	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	98
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99
PID 4844 wrote to memory of 3864	4844	a1punf5t2of.exe	99

C:\Users\Admin\AppData\Local\Temp\7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe
"C:\Users\Admin\AppData\Local\Temp\7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4844
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
278KB

MD5
03956995f2f6955a720924c28f8fc936

SHA1
188516463fb8a173a165684e0ee4c1e4cb0549f8

SHA256
b23a1ab7934c5f762a32b560c641f0ae5e3e67161faa023aeb4e17c2a29898cc

SHA512
34d8ad5bf2f361f3121370a474edd3ebcd4aec35a9588f13ef112487c4ae47948c3b5df660e841cb7928b3759379f13410aad3c70db48f3d90566f38ba103830

Download Submit
memory/1560-0-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/1560-1-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-2-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-3-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-4-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/1560-5-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-6-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-7-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1560-22-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-32-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-34-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-42-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-39-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-38-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3864-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3864-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3864-37-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-36-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3864-33-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-23-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-21-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-26-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-25-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-41-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-24-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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