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

Executes dropped EXE 2 IoCs

pid	Process
2804	a1punf5t2of.exe
2680	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe
2804	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-1-5-21-3290804112-2823094203-3137964600-1000\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 2804 set thread context of 2680	2804	a1punf5t2of.exe	32

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
2680	a1punf5t2of.exe
2680	a1punf5t2of.exe
2680	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2680	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 1740 wrote to memory of 2804	1740	7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe	30
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32
PID 2804 wrote to memory of 2680	2804	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe
"C:\Users\Admin\AppData\Local\Temp\7f3caea5e240c1b83c543e51931eb84317440aff1cd3011b95b5b69d22cff440N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2804
- - 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:2680

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

System Information Discovery

2

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

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

Filesize
278KB

MD5
85b1058a80c4d23ec68046221593b848

SHA1
2f3d152a424fe14e2f229386a66ceec3a1c6e772

SHA256
59b060066cbde119575e6339c47a2ea357aff19b45667f00abf84c5e3d002b76

SHA512
d5067ff9d8ff75e9cdaf40f58395583c8fba2779cb058ee6c01b5fabfdb98c4942fd74ed420912933ed4f92ff568f4c1d5bccc0d7d043b4cca808cfeb177e12b

Download Submit
memory/1740-0-0x0000000074AB1000-0x0000000074AB2000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-2-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-3-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-4-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-5-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-6-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-16-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2804-17-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-18-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-19-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-15-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-41-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads