nanocore | 6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02

Analysis

max time kernel
147s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26/08/2024, 16:36

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General

Target
6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe
Size 281KB
Sample240826-t4k4estfmc
SHA256 6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02
MD5 71776eeac76ac1591144338385374c5d
SHA1 2273f36d078d132c44a16a1564e9d9ff01334d51
SHA512 b3360011ff93b2ce892979848ad8a362c068ca28519668311e7312bfeccc4e4798751f0abd1cd531c42bbc79e2e42a108d26908b2e39f2c6783b011e3db93611
SSDEEP 6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkf/:boSeGUA5YZazpXUmZhZ6S2
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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe

Executes dropped EXE 2 IoCs

pid	Process
4804	a1punf5t2of.exe
3880	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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.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 4804 set thread context of 3880	4804	a1punf5t2of.exe	96

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	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.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
3880	a1punf5t2of.exe
3880	a1punf5t2of.exe
3880	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3880	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3880	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 4804	2972	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe	95
PID 2972 wrote to memory of 4804	2972	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe	95
PID 2972 wrote to memory of 4804	2972	6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe	95
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96
PID 4804 wrote to memory of 3880	4804	a1punf5t2of.exe	96

C:\Users\Admin\AppData\Local\Temp\6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe
"C:\Users\Admin\AppData\Local\Temp\6d233149cf42f476907c45a4e63329d00af0c78d9dafe6f9cc5a38784206db02.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- 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:4804
- - 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:3880

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 281KB
SHA256 5b0329a9e018a85e7abb3211a4dc8a410b941fe23414eb41c00fd8ff6625c589
MD5 345e1654eb74147a1ac1fda3ea5a35a3
SHA1 9df02e5a1ae59f6e0c25519f9c9c797d0cbc6b37
SHA512 5850c2e4105a357731a7dd15a1ace29aefbe47871216701aefecb9bcd02bcba2125d5d49b3839883884468755fe18064fe00c5a9c4fccc5dba7fcd148756c088
SSDEEP 6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfn:boSeGUA5YZazpXUmZhZ6Si
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2972-0-0x0000000075082000-0x0000000075083000-memory.dmp

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memory/2972-1-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-2-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-3-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-4-0x0000000075082000-0x0000000075083000-memory.dmp

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memory/2972-5-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-6-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-7-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/2972-21-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-32-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-35-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-39-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-36-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-33-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/3880-29-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3880-28-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3880-27-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4804-22-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/4804-26-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/4804-23-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/4804-25-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/4804-38-0x0000000075080000-0x0000000075631000-memory.dmp

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memory/4804-24-0x0000000075080000-0x0000000075631000-memory.dmp

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