nanocore | 45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31

General

Target

45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe
Size

255KB
MD5

485d305d217b457f0ac2b6b5f3a2db20
SHA1

0d19fd21cbb365dea6fe1d6e18dd801d6a88b71d
SHA256

45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31
SHA512

e1aec550951ffa1fa38951deec9eb1dc62c01e253a400f49a55e6dad990022b8b92a51b33995be740459ab31bf15c1ce6a72ac1f43eef224b2628b398a70c44c
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQqV:EeGUA5YZazpXUmZhJV

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe

Executes dropped EXE 2 IoCs

pid	Process
4028	a1punf5t2of.exe
1584	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.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 4028 set thread context of 1584	4028	a1punf5t2of.exe	92

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	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.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
1584	a1punf5t2of.exe
1584	a1punf5t2of.exe
1584	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1584	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1584	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 4028	4764	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe	91
PID 4764 wrote to memory of 4028	4764	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe	91
PID 4764 wrote to memory of 4028	4764	45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe	91
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92
PID 4028 wrote to memory of 1584	4028	a1punf5t2of.exe	92

C:\Users\Admin\AppData\Local\Temp\45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe
"C:\Users\Admin\AppData\Local\Temp\45c27165738f6be59e5c39bfde9e082849bd1b235d274ec0f482d68ae7308d31N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- 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:4028
- - 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:1584

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
255KB

MD5
26b650427b927c632aea3a52b61478f6

SHA1
03ee674991b8f369f7eaed69539e6fb7e12a60fe

SHA256
f69b1128482c5228ea28b5e81627854f6c011d5e2356138ec453a776ed35f96a

SHA512
f91111207bd001ddb35b7920068a241eb66b4278d354547991ddfc98c031384a2a71c4d944ecceaf32420a1b4dec61eef334785bd90a212684ea5d6469d41d27

Download Submit
memory/1584-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1584-40-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1584-37-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1584-36-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1584-34-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1584-33-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1584-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1584-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4028-24-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-23-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-21-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-39-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-25-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-26-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4028-27-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-22-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-7-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-6-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-5-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-4-0x0000000074C22000-0x0000000074C23000-memory.dmp

Filesize
4KB

Download
memory/4764-3-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-2-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-0-0x0000000074C22000-0x0000000074C23000-memory.dmp

Filesize
4KB

Download
memory/4764-1-0x0000000074C20000-0x00000000751D1000-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