Malware Analysis Report

2025-06-16 06:50

Sample ID 221010-t3ng6acgcm
Target ZX2.exe
SHA256 cbc4c00395ee3d24d1f5a1dd64cfb0b74648f0371a0665287dd8108181e7668b
Tags
nyan cat njrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cbc4c00395ee3d24d1f5a1dd64cfb0b74648f0371a0665287dd8108181e7668b

Threat Level: Known bad

The file ZX2.exe was found to be: Known bad.

Malicious Activity Summary

nyan cat njrat

Njrat family

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-10-10 16:35

Signatures

Njrat family

njrat

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-10 16:35

Reported

2022-10-10 16:37

Platform

win10v2004-20220901-en

Max time kernel

112s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 372 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe
PID 372 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe
PID 372 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ZX2.exe

"C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 nyas22.duckdns.org udp
US 64.44.167.136:57831 nyas22.duckdns.org tcp
US 20.42.65.84:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 64.44.167.136:57831 nyas22.duckdns.org tcp
US 93.184.221.240:80 tcp
NL 104.80.229.204:443 tcp

Files

memory/372-132-0x0000000074D40000-0x00000000752F1000-memory.dmp

memory/372-133-0x0000000074D40000-0x00000000752F1000-memory.dmp

memory/2848-134-0x0000000000000000-mapping.dmp

memory/372-135-0x0000000074D40000-0x00000000752F1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-10 16:35

Reported

2022-10-10 16:37

Platform

win7-20220812-en

Max time kernel

113s

Max time network

116s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1948 wrote to memory of 1196 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 1196 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 1196 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 1196 N/A C:\Users\Admin\AppData\Local\Temp\ZX2.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ZX2.exe

"C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\ZX2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 nyas22.duckdns.org udp
US 64.44.167.136:57831 nyas22.duckdns.org tcp
US 64.44.167.136:57831 nyas22.duckdns.org tcp

Files

memory/1948-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

memory/1948-55-0x0000000073FC0000-0x000000007456B000-memory.dmp

memory/1948-56-0x0000000073FC0000-0x000000007456B000-memory.dmp

memory/1948-57-0x0000000000B25000-0x0000000000B36000-memory.dmp

memory/1948-58-0x0000000000B25000-0x0000000000B36000-memory.dmp

memory/1196-59-0x0000000000000000-mapping.dmp

memory/1948-60-0x0000000073FC0000-0x000000007456B000-memory.dmp

memory/1948-61-0x0000000000B25000-0x0000000000B36000-memory.dmp