Malware Analysis Report

2025-04-13 23:42

Sample ID 230811-yttd9sad8z
Target xZJKmUXowvtp.exe
SHA256 784e7f352ce8a8ca2e2909967bb42e67652e964c981640222ba11aaa148f092d
Tags
nyan cat njrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

784e7f352ce8a8ca2e2909967bb42e67652e964c981640222ba11aaa148f092d

Threat Level: Known bad

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

Malicious Activity Summary

nyan cat njrat

Njrat family

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-11 20:05

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-11 20:05

Reported

2023-08-11 20:07

Platform

win7-20230712-en

Max time kernel

117s

Max time network

119s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 fortuna777.duckdns.org udp
SE 46.246.82.6:1994 fortuna777.duckdns.org tcp
SE 46.246.82.6:1994 fortuna777.duckdns.org tcp
SE 46.246.82.6:1994 fortuna777.duckdns.org tcp

Files

memory/532-54-0x0000000074E70000-0x000000007541B000-memory.dmp

memory/532-56-0x0000000000C10000-0x0000000000C50000-memory.dmp

memory/532-55-0x0000000074E70000-0x000000007541B000-memory.dmp

memory/532-57-0x0000000074E70000-0x000000007541B000-memory.dmp

memory/532-58-0x0000000074E70000-0x000000007541B000-memory.dmp

memory/532-59-0x0000000000C10000-0x0000000000C50000-memory.dmp

memory/532-60-0x0000000000C10000-0x0000000000C50000-memory.dmp

memory/532-61-0x0000000074E70000-0x000000007541B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-11 20:05

Reported

2023-08-11 20:07

Platform

win10v2004-20230703-en

Max time kernel

141s

Max time network

155s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4852 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\xZJKmUXowvtp.exe C:\Windows\SysWOW64\cmd.exe
PID 4852 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\xZJKmUXowvtp.exe C:\Windows\SysWOW64\cmd.exe
PID 4852 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\xZJKmUXowvtp.exe C:\Windows\SysWOW64\cmd.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 fortuna777.duckdns.org udp
SE 46.246.82.6:1994 fortuna777.duckdns.org tcp
US 8.8.8.8:53 6.82.246.46.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 6.173.189.20.in-addr.arpa udp

Files

memory/4852-133-0x0000000074A90000-0x0000000075041000-memory.dmp

memory/4852-134-0x0000000074A90000-0x0000000075041000-memory.dmp

memory/4852-135-0x0000000000A00000-0x0000000000A10000-memory.dmp

memory/4852-136-0x0000000074A90000-0x0000000075041000-memory.dmp

memory/4852-137-0x0000000074A90000-0x0000000075041000-memory.dmp

memory/4852-138-0x0000000000A00000-0x0000000000A10000-memory.dmp

memory/4852-140-0x0000000074A90000-0x0000000075041000-memory.dmp