nanocore | 1a4b1c047ded5964712cd991a2f2a22febcaa4d4b30d6905784207665506b30e

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/07/2026, 04:27

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General

Target
erpc.io.exe
Size 203KB
Sample260731-e28pdawscx
SHA256 1a4b1c047ded5964712cd991a2f2a22febcaa4d4b30d6905784207665506b30e
MD5 e53732988cb12dfdb35c85351cd2b34b
SHA1 07bc9da1523442d64a2534b6b35be81dbc113206
SHA512 678a3473cb3a3fc0f9e2f17e1ca15939c55efff91d3f4e55bdfa04eedafa2432579359c61d686ee8f039c1ebc1a6181d293be66acd0aaa0ce7012e3cb526b0c7
SSDEEP 6144:MLV6Bta6dtJmakIM5JR/4/hpQBhhVLy7J:MLV6BtpmkmR/4/UBh21
TLSH
T12A14CF163BA88A3FE2CE8679611212139379C2E398D3F3DE18D455B79F267E50A071C7
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

erpc.io:443
www.erpc.io:443

Mutex

f26b3377-9c85-4ba4-a41f-62cf1755fba1

Attributes

activate_away_mode
true
backup_connection_host
www.erpc.io
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-05-12T06:08:52.911991536Z
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
unknow
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
f26b3377-9c85-4ba4-a41f-62cf1755fba1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
erpc.io
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
5000
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
4608	wpasv.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\WPA Service = "C:\\Program Files (x86)\\WPA Service\\wpasv.exe"	erpc.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	erpc.io.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WPA Service\client.log	wpasv.exe
File created	C:\Program Files (x86)\WPA Service\wpasv.exe	erpc.io.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	erpc.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	wpasv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	erpc.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
2208	schtasks.exe
1760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 59 IoCs

pid	Process
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe
4696	erpc.io.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4696	erpc.io.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4696	erpc.io.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 1760	4696	erpc.io.exe	90
PID 4696 wrote to memory of 2208	4696	erpc.io.exe	92

C:\Users\Admin\AppData\Local\Temp\erpc.io.exe
"C:\Users\Admin\AppData\Local\Temp\erpc.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:4696
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5DA7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1760
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5E34.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2208

C:\Program Files (x86)\WPA Service\wpasv.exe
"C:\Program Files (x86)\WPA Service\wpasv.exe"
1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4608

C:\Users\Admin\AppData\Local\Temp\erpc.io.exe
"C:\Users\Admin\AppData\Local\Temp\erpc.io.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3336

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

wpasv.exe

Path C:\Program Files (x86)\WPA Service\wpasv.exe
Size 203KB
SHA256 1a4b1c047ded5964712cd991a2f2a22febcaa4d4b30d6905784207665506b30e
MD5 e53732988cb12dfdb35c85351cd2b34b
SHA1 07bc9da1523442d64a2534b6b35be81dbc113206
SHA512 678a3473cb3a3fc0f9e2f17e1ca15939c55efff91d3f4e55bdfa04eedafa2432579359c61d686ee8f039c1ebc1a6181d293be66acd0aaa0ce7012e3cb526b0c7
SSDEEP 6144:MLV6Bta6dtJmakIM5JR/4/hpQBhhVLy7J:MLV6BtpmkmR/4/UBh21
TLSH
T12A14CF163BA88A3FE2CE8679611212139379C2E398D3F3DE18D455B79F267E50A071C7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmp5DA7.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5DA7.tmp
Size 1KB
SHA256 d08164a72447ad45b1f9e8321e982438bc7d82c0771f9b73dd594babe416e6d1
MD5 fcdf90da4b8abb3ebfe8668a7ebc961f
SHA1 68a0750b75d9c4f60e3323a7c3467c1fa5faeeb8
SHA512 fa7abc3fb8ba84adaf9f6b27b9c6a9e3409ed079a20a2c50e04286b975e45035c7b220b7eee851dde750835b04d12245d666bb469562a57c2062bb09f66595d0
TLSH
T10021C064ACC0F71F66B15629A39297C2DE2A57A301564138FCCC4A7F3FB6186304356B
MD5 SHA1 SHA512 TLSH

Submit Download

tmp5E34.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5E34.tmp
Size 1KB
SHA256 23af17733a3882cdd82a5bbc321d896b2430dc1bb4b4ac034d129cde5027afc4
MD5 21de6c3a6440d917bdbb4b491191d9b2
SHA1 c63c300affe7147910dc4544d2d5f3029bf321a6
SHA512 dcd1c464ed36593b990e072940ab415804ef8076743015fff4939211e30e436beb7ce6af3072769abe0214f737cedb210d2b45e6e90da20dac54c3945b11575f
TLSH
T19A21C064ACC0F65B66715625E39157C2EF2A97A302564138FCCC4A7F3FB6186304356B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/3336-12-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/3336-13-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/3336-17-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/4608-10-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/4608-11-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/4608-16-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/4696-8-0x0000000074AF0000-0x0000000075111000-memory.dmp

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memory/4696-0-0x0000000001590000-0x00000000015A0000-memory.dmp

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memory/4696-1-0x0000000074AF2000-0x0000000074AF4000-memory.dmp

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memory/4696-15-0x0000000074AF2000-0x0000000074AF4000-memory.dmp

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memory/4696-14-0x0000000001590000-0x00000000015A0000-memory.dmp

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memory/4696-18-0x0000000074AF0000-0x0000000075111000-memory.dmp

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