nanocore | 2b33deca7af6ba3c46e6825b5680057d6057316eab3e88e7d4879edf867eabfd

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/04/2026, 08:50

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General

Target
ratnanox.exe
Size 203KB
Sample260425-krvbwscx2s
SHA256 2b33deca7af6ba3c46e6825b5680057d6057316eab3e88e7d4879edf867eabfd
MD5 40d0951130e09d9353ca3de2b5045bb6
SHA1 a2e1821c906b1cdc7da8782debe4812b7279103f
SHA512 144aab93b8f56f3f66add841507e985e4f93babeec0853c39042a0d5ce6d582bbbbcfd69026f64202699a3cb6410839b30e43905b7a362576f938c32b7c80d77
SSDEEP 3072:szEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HIdbO1RxN+dAu8imqhVPd63DfOS:sLV6Bta6dtJmakIM5qwC86hV1UfUgrT3
TLSH
T1D114C02677E98A3FE2DE8679611201524379C3E39DD3F3DA28D414B38B663E50A0B1D7
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

airtellwireless.it.com:443

Mutex

e81b5999-fd03-43d6-afce-61cfabb2eb2e

Attributes

activate_away_mode
true
backup_connection_host
airtellwireless.it.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-02-04T10:11:47.198545736Z
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
airtellwireless.it.com
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
e81b5999-fd03-43d6-afce-61cfabb2eb2e
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
airtellwireless.it.com
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
5000
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
5124	tcpsv.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\TCP Service = "C:\\Program Files (x86)\\TCP Service\\tcpsv.exe"	ratnanox.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	ratnanox.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\TCP Service\tcpsv.exe	ratnanox.exe
File opened for modification	C:\Program Files (x86)\TCP Service\tcpsv.exe	ratnanox.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ratnanox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tcpsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ratnanox.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
2644	schtasks.exe
2924	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe
4424	ratnanox.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4424	ratnanox.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4424	ratnanox.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 2644	4424	ratnanox.exe	84
PID 4424 wrote to memory of 2924	4424	ratnanox.exe	86

C:\Users\Admin\AppData\Local\Temp\ratnanox.exe
"C:\Users\Admin\AppData\Local\Temp\ratnanox.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:4424
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "TCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEA21.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2644
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "TCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEA80.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2924

C:\Users\Admin\AppData\Local\Temp\ratnanox.exe
"C:\Users\Admin\AppData\Local\Temp\ratnanox.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4632

C:\Program Files (x86)\TCP Service\tcpsv.exe
"C:\Program Files (x86)\TCP Service\tcpsv.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5124

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

tcpsv.exe

Path C:\Program Files (x86)\TCP Service\tcpsv.exe
Size 203KB
SHA256 2b33deca7af6ba3c46e6825b5680057d6057316eab3e88e7d4879edf867eabfd
MD5 40d0951130e09d9353ca3de2b5045bb6
SHA1 a2e1821c906b1cdc7da8782debe4812b7279103f
SHA512 144aab93b8f56f3f66add841507e985e4f93babeec0853c39042a0d5ce6d582bbbbcfd69026f64202699a3cb6410839b30e43905b7a362576f938c32b7c80d77
SSDEEP 3072:szEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HIdbO1RxN+dAu8imqhVPd63DfOS:sLV6Bta6dtJmakIM5qwC86hV1UfUgrT3
TLSH
T1D114C02677E98A3FE2DE8679611201524379C3E39DD3F3DA28D414B38B663E50A0B1D7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmpEA21.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpEA21.tmp
Size 1KB
SHA256 e833dc1f2f120ca17f138936b996283c1ac9a2b03da3e4353315c49d683036ac
MD5 42ed03bf9217096a0b636c1504ae0eaa
SHA1 45db35fe12b037c5af665e94f29b2f2e42f24cc3
SHA512 213cb9d9779ccd76d674a3c48b8184ebbe11045eb8e0c2f07635cee63a88d3293149f01b902217d1fe7ab9328273457024f2c79f75d653433b761f813a22fdba
TLSH
T15221C064ACC0F61F66715639A39197C2DE2A57A301564138FCCC4A7F3FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

tmpEA80.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpEA80.tmp
Size 1KB
SHA256 684997dd4ce15031cec8f2f93933b1d41d7bf5cbbff655dd64377b07055c449a
MD5 93fc3117767507c9889abd12dc667d22
SHA1 1096e4cfa0c35756e3c3fb866c1e4c1e59115df9
SHA512 e403348ee77bd3e7c45245dd5dae81c3ea130d5cf342f630982772ce5f75548b292013480e2831d68cf51349b64afde4589d4eec94b567d20f0a01e3b9549bdc
TLSH
T12221C064ACC0F65B66715629A39197C2DF2A97A301564138FCCC4E7F2FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/4424-0-0x00000000005D0000-0x00000000005E0000-memory.dmp

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memory/4424-1-0x0000000074B12000-0x0000000074B14000-memory.dmp

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memory/4424-9-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/4424-24-0x00000000048B0000-0x000000000490F000-memory.dmp

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memory/4424-25-0x0000000006410000-0x0000000006416000-memory.dmp

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memory/4424-23-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/4424-22-0x0000000074B12000-0x0000000074B14000-memory.dmp

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memory/4424-21-0x00000000005D0000-0x00000000005E0000-memory.dmp

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memory/4632-17-0x0000000005750000-0x00000000057AF000-memory.dmp

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memory/4632-20-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/4632-13-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/4632-12-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/5124-19-0x0000000074B10000-0x00000000750C1000-memory.dmp

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memory/5124-18-0x0000000005500000-0x000000000555F000-memory.dmp

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memory/5124-14-0x0000000074B10000-0x00000000750C1000-memory.dmp

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