nanocore | c3a0cddf3cb0389fdd9c8029f3dc4638f511b93950c56fb811310987b51ee901

Analysis

max time kernel
119s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/08/2024, 03:23

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General

Target
bb936870fe8af1aefa1eec876801cae0N.exe
Size 281KB
Sample240815-dxmexaxcll
SHA256 c3a0cddf3cb0389fdd9c8029f3dc4638f511b93950c56fb811310987b51ee901
MD5 bb936870fe8af1aefa1eec876801cae0
SHA1 7cb2ae9a76cadb344075b19087ed27c9ef983b73
SHA512 ff863e20775f66dfacc4e2e59b924bdf5482c89a763c9f6674ed502ff9214e9aebc53e43d3ce1237cbe5fe01874b9e7b8c51552b67cbacae87c755d929da8974
SSDEEP 6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6S7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

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

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	bb936870fe8af1aefa1eec876801cae0N.exe

Executes dropped EXE 2 IoCs

pid	Process
4012	a1punf5t2of.exe
4292	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	bb936870fe8af1aefa1eec876801cae0N.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 4012 set thread context of 4292	4012	a1punf5t2of.exe	95

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	bb936870fe8af1aefa1eec876801cae0N.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
4292	a1punf5t2of.exe
4292	a1punf5t2of.exe
4292	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4292	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 4012	3436	bb936870fe8af1aefa1eec876801cae0N.exe	94
PID 3436 wrote to memory of 4012	3436	bb936870fe8af1aefa1eec876801cae0N.exe	94
PID 3436 wrote to memory of 4012	3436	bb936870fe8af1aefa1eec876801cae0N.exe	94
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95
PID 4012 wrote to memory of 4292	4012	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe
"C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- 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:4012
- - 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:4292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

a1punf5t2of.exe

Path C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
Size 282KB
SHA256 4d7dec1e7f62e338e0b820e8e7c73b94029627663628430e22c7f355b30641a0
MD5 87df6a89c07b0493486309a000dbbc34
SHA1 97d1414c53c4737ae6ad2e8765337fbc4665f529
SHA512 fac28cf07ea5f1827ed55a9ffff21f5af8885020653273b6c347a27583e7a6ee58e7317f0ccf605983651ce893f7e052a66a16d2bef66b38469b7bb19a9efaa3
SSDEEP 6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfD:boSeGUA5YZazpXUmZhZ6Sa
MD5 SHA1 SHA512 SSDEEP

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memory/3436-1-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/3436-2-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/3436-17-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/3436-0-0x0000000074B42000-0x0000000074B43000-memory.dmp

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memory/4012-30-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4012-16-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4012-18-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4012-19-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4012-32-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-22-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4292-25-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-26-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-27-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-29-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4292-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4292-33-0x0000000074B40000-0x00000000750F1000-memory.dmp

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memory/4292-34-0x0000000074B40000-0x00000000750F1000-memory.dmp

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