nanocore | 8b9110f4075db1285db9fc8298e3bb1fc5b71e3ef4c002708f56c5f59df7e555

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
24/07/2026, 18:04

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General

Target
blockchainminers.io.exe
Size 203KB
Sample260724-wnmcnavfrd
SHA256 8b9110f4075db1285db9fc8298e3bb1fc5b71e3ef4c002708f56c5f59df7e555
MD5 a69e7d32b85b37fee8e27a4f58b1376e
SHA1 046e2536dcddb76fd06e87c2057545aa16e59c24
SHA512 8121484db250d8e0696df8d66bd6caf249d297edf4d2721bc8ce82b97efd9970972b710005b7de461185578ba3e9c641cfce934f90cb8874910ef7e37a02d71d
SSDEEP 3072:MzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HI+TSnfr0CEE9R4szJbGxBzU9y/:MLV6Bta6dtJmakIM5enz0mJ+zAapxF
TLSH
T15114CF167BA8492FE2DE85BDA01256129379C2E3EDD3F3DE28D455B78B227E006071D3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

blockchainminers.io:443
www.blockchainminers.io:443

Mutex

10c845cb-8ac7-4a5f-abb1-b9fd4d2e0086

Attributes

activate_away_mode
true
backup_connection_host
www.blockchainminers.io
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-05-05T19:45:43.617807936Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
443
default_group
Default
enable_debug_mode
false
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
10c845cb-8ac7-4a5f-abb1-b9fd4d2e0086
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
blockchainminers.io
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
4997
run_delay
9
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Family: NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Executes dropped EXE 1 IoCs

pid	Process
4808	smtpsv.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Service = "C:\\Program Files (x86)\\SMTP Service\\smtpsv.exe"	blockchainminers.io.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	blockchainminers.io.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Service\smtpsv.exe	blockchainminers.io.exe
File opened for modification	C:\Program Files (x86)\SMTP Service\smtpsv.exe	blockchainminers.io.exe
File opened for modification	C:\Program Files (x86)\SMTP Service\client.log	smtpsv.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	blockchainminers.io.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smtpsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	blockchainminers.io.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4752	schtasks.exe
4344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe
3740	blockchainminers.io.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3740	blockchainminers.io.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	blockchainminers.io.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3740 wrote to memory of 4752	3740	blockchainminers.io.exe	86
PID 3740 wrote to memory of 4344	3740	blockchainminers.io.exe	89

C:\Users\Admin\AppData\Local\Temp\blockchainminers.io.exe
"C:\Users\Admin\AppData\Local\Temp\blockchainminers.io.exe"
1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3740
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1642.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4752
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp16D0.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4344

C:\Program Files (x86)\SMTP Service\smtpsv.exe
"C:\Program Files (x86)\SMTP Service\smtpsv.exe"
1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4808

C:\Users\Admin\AppData\Local\Temp\blockchainminers.io.exe
"C:\Users\Admin\AppData\Local\Temp\blockchainminers.io.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1584

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

smtpsv.exe

Path C:\Program Files (x86)\SMTP Service\smtpsv.exe
Size 203KB
SHA256 8b9110f4075db1285db9fc8298e3bb1fc5b71e3ef4c002708f56c5f59df7e555
MD5 a69e7d32b85b37fee8e27a4f58b1376e
SHA1 046e2536dcddb76fd06e87c2057545aa16e59c24
SHA512 8121484db250d8e0696df8d66bd6caf249d297edf4d2721bc8ce82b97efd9970972b710005b7de461185578ba3e9c641cfce934f90cb8874910ef7e37a02d71d
SSDEEP 3072:MzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HI+TSnfr0CEE9R4szJbGxBzU9y/:MLV6Bta6dtJmakIM5enz0mJ+zAapxF
TLSH
T15114CF167BA8492FE2DE85BDA01256129379C2E3EDD3F3DE28D455B78B227E006071D3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmp1642.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1642.tmp
Size 1KB
SHA256 02ce2b3932dec8b1a6505ec8402bf2172546e7e812b2ef95ce687f350e1d3ae6
MD5 fd9589917289d43514830fb97e14167c
SHA1 4bd0bde39322d97f7ebb2c484b564b38dd6ac01b
SHA512 492760e54036d45c8d9979af2f4077e4335d69de65d331d8aadfcd31da9e0371f1e4eaf3c3af4b62bebd891bd93dd03c91465a502defb9c0733deded70b82dbb
TLSH
T1E521E064ACC0F71F66715629A79197C2DE2A57A301164138FCCC8A7F3FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

tmp16D0.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp16D0.tmp
Size 1KB
SHA256 6fe1bdf3d1dedec102ac61b47fff909c53e0df8903098c52f3843b1e11a2d863
MD5 1129270510286b9e8bae6dc678757352
SHA1 f8f3af28a182023adb3efaaa79d034f399ec16d3
SHA512 cec6863e4d3a431668cb2aa2fd6bbd032a3e1cc61698fcd9fe952fcffc6ebda0a87ead9090767365a473c143c8b32fd269a4af03454d0f34858252c4b767844f
TLSH
T17C21C068ACC0F65B66B15625A39157C2DF2A97A301664138FCCC4E7F2FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1584-15-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/1584-14-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/1584-21-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/3740-1-0x00000000751F2000-0x00000000751F4000-memory.dmp

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memory/3740-13-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/3740-0-0x00000000012D0000-0x00000000012E0000-memory.dmp

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memory/3740-16-0x00000000012D0000-0x00000000012E0000-memory.dmp

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memory/3740-17-0x00000000751F2000-0x00000000751F4000-memory.dmp

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memory/3740-22-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/4808-12-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/4808-11-0x00000000751F0000-0x00000000757A1000-memory.dmp

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memory/4808-19-0x00000000751F0000-0x00000000757A1000-memory.dmp

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