nanocore | dbfc121dba891ec124f379ebe35ef98ab4c6decebf8084deed364eea930258d8

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
10/08/2026, 01:13

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
3VDG09.exe
Size 203KB
Sample260810-bla7dssvc1
SHA256 dbfc121dba891ec124f379ebe35ef98ab4c6decebf8084deed364eea930258d8
MD5 277a215e73deebe487cab1c2bb8d61f7
SHA1 7e91aea681cef8b37e649d0e34a3564447cb15b4
SHA512 781b564308c1ddff3a55f89944367a1053a0bfb2d8974168bcd01475db99168cc1bc6b4af4b0b4577fb2eb1527138ae234eb663cd0e163715c2175b63ec176e9
SSDEEP 6144:MLV6Bta6dtJmakIM5KMBrwBJnaMC8xFev7y4QT1t4:MLV6BtpmkTMFIPHPe2Dt4
TLSH
T17B14C01677A94A3FD2DE82B9612211439378C2E399C3F7EE28D464B74F263E50A071D3
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

teztools.io:443
www.teztools.io:443

Mutex

c2ffeaf1-aa7e-4eb2-936c-405dcc3083d8

Attributes

activate_away_mode
true
backup_connection_host
www.teztools.io
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-05-22T02:48:28.585059136Z
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
c2ffeaf1-aa7e-4eb2-936c-405dcc3083d8
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
teztools.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
1148	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"	3VDG09.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	3VDG09.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Service\smtpsv.exe	3VDG09.exe
File opened for modification	C:\Program Files (x86)\SMTP Service\smtpsv.exe	3VDG09.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	3VDG09.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	3VDG09.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
3292	schtasks.exe
1692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe
3428	3VDG09.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3428	3VDG09.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3428	3VDG09.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3428 wrote to memory of 3292	3428	3VDG09.exe	84
PID 3428 wrote to memory of 1692	3428	3VDG09.exe	87

C:\Users\Admin\AppData\Local\Temp\3VDG09.exe
"C:\Users\Admin\AppData\Local\Temp\3VDG09.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:3428
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFB96.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3292
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFC33.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1692

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:1148

C:\Users\Admin\AppData\Local\Temp\3VDG09.exe
"C:\Users\Admin\AppData\Local\Temp\3VDG09.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:572

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

Replay Monitor

Loading Replay Monitor...

Downloads

smtpsv.exe

Path C:\Program Files (x86)\SMTP Service\smtpsv.exe
Size 203KB
SHA256 dbfc121dba891ec124f379ebe35ef98ab4c6decebf8084deed364eea930258d8
MD5 277a215e73deebe487cab1c2bb8d61f7
SHA1 7e91aea681cef8b37e649d0e34a3564447cb15b4
SHA512 781b564308c1ddff3a55f89944367a1053a0bfb2d8974168bcd01475db99168cc1bc6b4af4b0b4577fb2eb1527138ae234eb663cd0e163715c2175b63ec176e9
SSDEEP 6144:MLV6Bta6dtJmakIM5KMBrwBJnaMC8xFev7y4QT1t4:MLV6BtpmkTMFIPHPe2Dt4
TLSH
T17B14C01677A94A3FD2DE82B9612211439378C2E399C3F7EE28D464B74F263E50A071D3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmpFB96.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpFB96.tmp
Size 1KB
SHA256 2e836788b45a887c63d0f34a23e5051010af6741883f886a1623ad74575901a0
MD5 9c752e95ad17dd2c30521cef95ef7e4e
SHA1 c1f003535f43315fe3513ca74040c20cb733ed55
SHA512 44f57ad230f078980527d93d77a3cf5b5af1bdcd1d834a7333fc39bcf52179c884552c899afed5a6c6f27bbf1fbadd88cc0b4e65ad44077391c8e93fb1097e51
TLSH
T1B121C064ACC0F61F66715639A39197C2DE2A57A306564138FCCC4A7F3FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

tmpFC33.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpFC33.tmp
Size 1KB
SHA256 6fe1bdf3d1dedec102ac61b47fff909c53e0df8903098c52f3843b1e11a2d863
MD5 1129270510286b9e8bae6dc678757352
SHA1 f8f3af28a182023adb3efaaa79d034f399ec16d3
SHA512 cec6863e4d3a431668cb2aa2fd6bbd032a3e1cc61698fcd9fe952fcffc6ebda0a87ead9090767365a473c143c8b32fd269a4af03454d0f34858252c4b767844f
TLSH
T17C21C068ACC0F65B66B15625A39157C2DF2A97A301664138FCCC4E7F2FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/572-14-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/572-15-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/572-22-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/1148-11-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/1148-12-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/1148-18-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/1148-20-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/3428-1-0x00000000751B2000-0x00000000751B4000-memory.dmp

Download

memory/3428-13-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/3428-0-0x0000000000D80000-0x0000000000D90000-memory.dmp

Download

memory/3428-16-0x0000000000D80000-0x0000000000D90000-memory.dmp

Download

memory/3428-17-0x00000000751B2000-0x00000000751B4000-memory.dmp

Download

memory/3428-23-0x00000000751B0000-0x0000000075761000-memory.dmp

Download