nanocore | b6075eb4e1e4d18fa005ee012e9fed34fc236a9ad324fe5161060ea3dcae2613

Analysis

max time kernel
149s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
29/04/2026, 07:45

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General

Target
m88.exe
Size 203KB
Sample260429-jlr4xahs3w
SHA256 b6075eb4e1e4d18fa005ee012e9fed34fc236a9ad324fe5161060ea3dcae2613
MD5 3486ffd7681b91a450611730e2ddbffc
SHA1 33f24080ffe0937b69acec08dd27ee4832da61ee
SHA512 63a8cb1ff9c7aca2466c341d238c389a7142ecc4c3012df086197480b7b18d3b2631267c8fdd85cedcfa507789a8681aed5c0da5331605bc402d9c3633864592
SSDEEP 6144:MLV6Bta6dtJmakIM5+0cFHkf8wa3PNMGd1:MLV6BtpmkxrH3wKlMGj
TLSH
T19214CF5677A88A2FE2DE86B9711251128379C2E399C3F3DE58D464B78F227E106071E3
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

www.m88sut.com:443
m88sut.com:443

Mutex

2a085e82-881b-403c-8950-baaff3a90cb0

Attributes

activate_away_mode
true
backup_connection_host
m88sut.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-02-07T23:23:12.167516336Z
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
m88
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
2a085e82-881b-403c-8950-baaff3a90cb0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
www.m88sut.com
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
4997
run_delay
0
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
388	wpamon.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 Monitor = "C:\\Program Files (x86)\\WPA Monitor\\wpamon.exe"	m88.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	m88.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WPA Monitor\wpamon.exe	m88.exe
File opened for modification	C:\Program Files (x86)\WPA Monitor\wpamon.exe	m88.exe
File opened for modification	C:\Program Files (x86)\WPA Monitor\client.log	wpamon.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	m88.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	m88.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wpamon.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
3976	schtasks.exe
3960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe
928	m88.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
928	m88.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	928	m88.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 3976	928	m88.exe	80
PID 928 wrote to memory of 3960	928	m88.exe	82

C:\Users\Admin\AppData\Local\Temp\m88.exe
"C:\Users\Admin\AppData\Local\Temp\m88.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:928
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "WPA Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1C0.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3976
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "WPA Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp21F.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3960

C:\Users\Admin\AppData\Local\Temp\m88.exe
"C:\Users\Admin\AppData\Local\Temp\m88.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2408

C:\Program Files (x86)\WPA Monitor\wpamon.exe
"C:\Program Files (x86)\WPA Monitor\wpamon.exe"
1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:388

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

wpamon.exe

Path C:\Program Files (x86)\WPA Monitor\wpamon.exe
Size 203KB
SHA256 b6075eb4e1e4d18fa005ee012e9fed34fc236a9ad324fe5161060ea3dcae2613
MD5 3486ffd7681b91a450611730e2ddbffc
SHA1 33f24080ffe0937b69acec08dd27ee4832da61ee
SHA512 63a8cb1ff9c7aca2466c341d238c389a7142ecc4c3012df086197480b7b18d3b2631267c8fdd85cedcfa507789a8681aed5c0da5331605bc402d9c3633864592
SSDEEP 6144:MLV6Bta6dtJmakIM5+0cFHkf8wa3PNMGd1:MLV6BtpmkxrH3wKlMGj
TLSH
T19214CF5677A88A2FE2DE86B9711251128379C2E399C3F3DE58D464B78F227E106071E3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmp1C0.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1C0.tmp
Size 1KB
SHA256 18cf56037e4948d02a6515aa4e81bd3cb21f721b801885bde3503238c263f311
MD5 29c1164b19187388eb5bb7f5356da5cc
SHA1 a44819c5b720b27212a3bab058cc1654ca40ed37
SHA512 70c7400dd80d3d238d0cc9fa882093ce65b1db66c0bf8c748b397636b7b8f41435819130ec03cd046647c52b2e89984e1728423cabcf28e85387047864d67ea1
TLSH
T1BF21C064ACC0F61F66B15629A79197C2DE2A57A301564138FCCC4E7F3FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

tmp21F.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp21F.tmp
Size 1KB
SHA256 6abae7707b06e52b58f537b335e367cc54b093e899d78f16e94ceaf7ceafca52
MD5 a246b3561d823177f3586e629f144233
SHA1 0f05d12e55a1d2e5e6a4f307c193882fba093315
SHA512 4246aa9a96331e2c7e36b37fa778e31ecae055c77164e0dc673aa50cdec368f08d356ab06ef1a4540816c474828048ab1bebed7e211a4eb929f2918e1fac9c6d
TLSH
T13621C064ACC0F61B66715629A39197C2EF2A97A302564138FCCC4A7F3FB6186305316B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/388-19-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/388-14-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/388-15-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/928-16-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/928-1-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/928-9-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/928-0-0x0000000074B81000-0x0000000074B82000-memory.dmp

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memory/928-21-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/928-22-0x0000000006AD0000-0x0000000006B34000-memory.dmp

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memory/928-23-0x0000000006AD0000-0x0000000006B34000-memory.dmp

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memory/928-24-0x0000000006AD0000-0x0000000006B34000-memory.dmp

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memory/928-28-0x0000000006AD0000-0x0000000006B34000-memory.dmp

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memory/2408-10-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/2408-11-0x0000000074B80000-0x0000000075131000-memory.dmp

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memory/2408-20-0x0000000074B80000-0x0000000075131000-memory.dmp

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