nanocore | b8c5e2c8477706f3f54e152443718dcec270889002289aa1730eabc5ba3f312f

Analysis

max time kernel
153s
max time network
129s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:09

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General

Target

26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe
Size

256KB
MD5

f8711c1a5b36f91d9c58dd4f367e40d1
SHA1

750ee2c764fcdd0f6bd986eca9caa3795469d32a
SHA256

26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a
SHA512

e9cd3add054705913fa59e6ad01e583c24cc1319b8c592afa02cf289de68290359c22720a8c3970691a59a46eaf13eda88bc0a600ab654463fc60da36ea3ea3c
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+q:EeGUA5YZazpXUmZhlq

Score

10^/10

nanocore defense_evasion discovery 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

Executes dropped EXE 2 IoCs

pid	Process
3044	a1punf5t2of.exe
2280	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe
3044	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_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 3044 set thread context of 2280	3044	a1punf5t2of.exe	32

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	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.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
2280	a1punf5t2of.exe
2280	a1punf5t2of.exe
2280	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2280	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 1668 wrote to memory of 3044	1668	26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe	31
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32
PID 3044 wrote to memory of 2280	3044	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe
"C:\Users\Admin\AppData\Local\Temp\26988aa536baefc2f8043cdb0d2e49e800d009b362f5cbd38692511fc5198f1a.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3044
- - 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:2280

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

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
256KB

MD5
2e13b02b60cc86bf519a170783878bcc

SHA1
b02b8c78dc66e0f5c17a7636ce513c532f1eb3bc

SHA256
51db869951b098a710350d2b464f983e73bacc83467ac4e361c4c0d401c38753

SHA512
9aa014691bbca2f14360884123b700ca267d2b48db051dc46f3a0437e094d16b7558e23f297beb1c677c1cdccb6509e775f5b36a0279393871dbf140d26e128f

Download Submit
memory/1668-17-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-1-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-2-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-3-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-4-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-5-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-6-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1668-0-0x0000000074DA1000-0x0000000074DA2000-memory.dmp

Filesize
4KB

Download
memory/2280-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-42-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2280-40-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3044-22-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-15-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-18-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-21-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-20-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-19-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-16-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-44-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download