Malware Analysis Report

2025-06-16 06:21

Sample ID 231204-bxs7cagd8t
Target 340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df
SHA256 340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df
Tags
nanocore evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df

Threat Level: Known bad

The file 340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

NanoCore

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Drops file in Program Files directory

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-04 01:31

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-04 01:31

Reported

2023-12-04 01:34

Platform

win10v2004-20231130-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Service = "C:\\Program Files (x86)\\NAT Service\\natsv.exe" C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\NAT Service\natsv.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A
File opened for modification C:\Program Files (x86)\NAT Service\natsv.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 4432 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
PID 1200 wrote to memory of 692 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe
PID 1200 wrote to memory of 692 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe
PID 1200 wrote to memory of 692 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe
PID 1200 wrote to memory of 5016 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe
PID 1200 wrote to memory of 5016 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe
PID 1200 wrote to memory of 5016 N/A C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe

"C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe"

C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe

"C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp85AB.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8609.tmp"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 4.4.8.8.in-addr.arpa udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
N/A 127.0.0.1:4510 tcp
N/A 127.0.0.1:4510 tcp
N/A 127.0.0.1:4510 tcp
US 8.8.8.8:53 btldinc7.sytes.net udp

Files

memory/4432-0-0x0000000000440000-0x00000000004DA000-memory.dmp

memory/4432-1-0x0000000074610000-0x0000000074DC0000-memory.dmp

memory/4432-2-0x0000000002880000-0x0000000002890000-memory.dmp

memory/4432-3-0x0000000005540000-0x0000000005AE4000-memory.dmp

memory/4432-4-0x0000000005080000-0x0000000005112000-memory.dmp

memory/4432-5-0x00000000054A0000-0x00000000054AA000-memory.dmp

memory/4432-6-0x00000000054B0000-0x00000000054C8000-memory.dmp

memory/4432-7-0x00000000054F0000-0x00000000054F8000-memory.dmp

memory/4432-8-0x0000000005500000-0x000000000550A000-memory.dmp

memory/4432-9-0x0000000006560000-0x00000000065D2000-memory.dmp

memory/4432-10-0x0000000006290000-0x000000000632C000-memory.dmp

memory/1200-11-0x0000000000400000-0x0000000000438000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe.log

MD5 93d52c1bc7c38d958583ebbd3dc09cd4
SHA1 4c5ee6f9c9ae190c9a0cccb91fa2257ddcb8b0d5
SHA256 2905f3a06dd8907ddbcbe64389cffcc8a5273d1822e25f8bea385bdd01653c76
SHA512 dfc55c3247d7734c5a531fb5a3de689e8bb823e82c14ad6cab16923d50d51e03e5e86165a7d65b3059a66b67968b611368b010a6d9f755916b01ef7b67c5228e

memory/1200-14-0x0000000074610000-0x0000000074DC0000-memory.dmp

memory/4432-15-0x0000000074610000-0x0000000074DC0000-memory.dmp

memory/1200-16-0x0000000005300000-0x0000000005310000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp85AB.tmp

MD5 03f5b9ec9db6068a5562292b3012ed49
SHA1 304033e8fde3f437b9a0a2c60671574f042e8799
SHA256 8422cf40de0753ca59d6a62f065b5b53b48602577db47da313ae28f6c783f37d
SHA512 c0fc6adfe0a354677d1e5d91b466b3a6dbd2d912deb49a0707bc9d41e3915953701877a20a8a9da3a0655eec57ee98a5430817ec51af706706232cda543b13f0

C:\Users\Admin\AppData\Local\Temp\tmp8609.tmp

MD5 cd8e69b89899eb65a199cc8019e502ad
SHA1 19ae04c02d02e2828e4513de66734c383660d1a5
SHA256 cf1a9b78745b0f788fea2f579f1e3a82efc7425edb1f35abb8dd8e1cbaaf03ef
SHA512 9a2bf35fc687ec6ac81ad3fe16f82f104ad880be6b36afc7297264de09d50e85d9d3376ed9378d56b08ef94ca700b886cc40768587fc623c7fb6117265bd7033

memory/1200-24-0x00000000051A0000-0x00000000051AA000-memory.dmp

memory/1200-25-0x00000000052E0000-0x00000000052FE000-memory.dmp

memory/1200-26-0x0000000005520000-0x000000000552A000-memory.dmp

memory/1200-27-0x0000000074610000-0x0000000074DC0000-memory.dmp

memory/1200-28-0x0000000005300000-0x0000000005310000-memory.dmp