nanocore | fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f

Analysis

max time kernel
146s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2025, 00:34

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General

Target
fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe
Size 255KB
Sample250101-axavbsznfp
SHA256 fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f
MD5 dd9531041b5b8e3fbb63619d85a6ffd4
SHA1 cd584aca434d3128f3920f12fe84bee4b8747ac9
SHA512 f6aa228cea97233435dca5f054739b3fb6302ac25e15093cc7aaf4ec954e8a961a3408907d94ac882d0fc1b127da1cb0ee63108d09585dbd355dd505e323d31d
SSDEEP 6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4w:EeGUA5YZazpXUmZhPw
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
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	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe

Executes dropped EXE 2 IoCs

pid	Process
1268	a1punf5t2of.exe
60	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"	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.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 1268 set thread context of 60	1268	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	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.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
60	a1punf5t2of.exe
60	a1punf5t2of.exe
60	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
60	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	60	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 1268	4740	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe	88
PID 4740 wrote to memory of 1268	4740	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe	88
PID 4740 wrote to memory of 1268	4740	fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe	88
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92
PID 1268 wrote to memory of 60	1268	a1punf5t2of.exe	92

C:\Users\Admin\AppData\Local\Temp\fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe
"C:\Users\Admin\AppData\Local\Temp\fcfe240e19c1a0fb6ec1af532cb2cd2bb8946c22c8bc76f965f84ab70caa7c4f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- 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:1268
- - 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:60

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 256KB
SHA256 4e284ce8e034216bdab43de6bcf3852d663cb9767b8305490d9a1fcd6e7ab568
MD5 2163d7f674072ecd62141eb6fa011232
SHA1 4a1347fc3a476f7f3a098a9235a20bd03c88f122
SHA512 2e158caabbf24105f41acb172b23e4b3da0d112d0d08f40ce249d4e643db9ee3a789e105336c20dee4dea37c68d427aea0d73bd8c8db8c051b57817f87edf586
SSDEEP 6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4r:EeGUA5YZazpXUmZhPr
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/60-28-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/60-40-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-37-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-36-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-34-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-33-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-32-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/60-27-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/60-29-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1268-24-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/1268-23-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/1268-39-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/1268-25-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/1268-26-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/1268-22-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-7-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-21-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-6-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-5-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-4-0x0000000075272000-0x0000000075273000-memory.dmp

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memory/4740-3-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-2-0x0000000075270000-0x0000000075821000-memory.dmp

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memory/4740-0-0x0000000075272000-0x0000000075273000-memory.dmp

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memory/4740-1-0x0000000075270000-0x0000000075821000-memory.dmp

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