Malware Analysis Report

2025-06-16 06:49

Sample ID 220905-yrcczaedeq
Target 05SEPTENVv.exe
SHA256 ff00a7414edad0eeb2ce1e7e9919e7a635a5c1621246e91c5bf9e51778156bb8
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

ff00a7414edad0eeb2ce1e7e9919e7a635a5c1621246e91c5bf9e51778156bb8

Threat Level: Known bad

The file 05SEPTENVv.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

2022-09-05 20:00

Signatures

Njrat family

njrat

Analysis: behavioral1

Detonation Overview

Submitted

2022-09-05 20:00

Reported

2022-09-05 20:03

Platform

win7-20220812-en

Max time kernel

33s

Max time network

41s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1348 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe
PID 1348 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe
PID 1348 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe
PID 1348 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe

"C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 segundito22.duckdns.org udp
GB 81.94.199.86:8888 segundito22.duckdns.org tcp

Files

memory/1348-54-0x0000000074F41000-0x0000000074F43000-memory.dmp

memory/1348-55-0x0000000074610000-0x0000000074BBB000-memory.dmp

memory/1348-56-0x0000000074610000-0x0000000074BBB000-memory.dmp

memory/1796-57-0x0000000000000000-mapping.dmp

memory/1348-58-0x0000000074610000-0x0000000074BBB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-09-05 20:00

Reported

2022-09-05 20:03

Platform

win10v2004-20220812-en

Max time kernel

137s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2976 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe
PID 2976 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe
PID 2976 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe

"C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\05SEPTENVv.exe"

Network

Country Destination Domain Proto
NL 95.101.78.82:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 segundito22.duckdns.org udp
GB 81.94.199.86:8888 segundito22.duckdns.org tcp
US 20.42.65.85:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 106.89.54.20.in-addr.arpa udp

Files

memory/2976-132-0x0000000074880000-0x0000000074E31000-memory.dmp

memory/2976-133-0x0000000074880000-0x0000000074E31000-memory.dmp

memory/4840-134-0x0000000000000000-mapping.dmp

memory/2976-135-0x0000000074880000-0x0000000074E31000-memory.dmp