nanocore | 4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0

General

Target

4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe
Size

255KB
MD5

8a00a99ea5bb892c7835c58d8c32bd00
SHA1

2218bb3e9f24a85d77055c2e00352e9c6dc08878
SHA256

4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0
SHA512

f71e56d3934f12f4c33d905e2c14c4a252d312c156dc3023e29f9252ea00b4194742634570d3925d5c05a0b48e86ab1d6edc800bd9c3018ba3a3691b7ac9dff0
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4Q:EeGUA5YZazpXUmZhPQ

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	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe

Executes dropped EXE 2 IoCs

pid	Process
3688	a1punf5t2of.exe
4028	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"	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.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 3688 set thread context of 4028	3688	a1punf5t2of.exe	90

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	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.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
4028	a1punf5t2of.exe
4028	a1punf5t2of.exe
4028	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4028	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 3688	3484	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe	86
PID 3484 wrote to memory of 3688	3484	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe	86
PID 3484 wrote to memory of 3688	3484	4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe	86
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90
PID 3688 wrote to memory of 4028	3688	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe
"C:\Users\Admin\AppData\Local\Temp\4b62c30887b9f721977a8ec1c5f585011dd394a658c6fb79a097b949dae927a0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3484
- 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:3688
- - 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:4028

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
256KB

MD5
9bd19082b8416547b6685e15070f4a8c

SHA1
9bc4baa02a86b19da3cf2341b2aec3552cb1706a

SHA256
796dd82c20ebc7decfd5ca8dffaead5ff095e3218a24ee99e79d5c7b7586f797

SHA512
30d19681a911ae01aa8c71174ec0f3b30b61c448ca88cc23e05c012c545f58238ae30b42a706bfb79d308d9ca07d76aff804fe9ee4501ecf2df02032b31a7287

Download Submit
memory/3484-23-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-1-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-2-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-3-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-4-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/3484-5-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-6-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-7-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3484-0-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/3688-22-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-24-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-21-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-25-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-26-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-27-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/3688-40-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4028-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4028-33-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-35-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-34-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-37-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-38-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4028-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4028-41-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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