Malware Analysis Report

2025-04-13 23:41

Sample ID 230821-sjn4xafc4w
Target bPbV.exe
SHA256 4af08d67c5c9aa9287b61632223f0dfb2784e37469aa2aac2f47b62a59508bc6
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

4af08d67c5c9aa9287b61632223f0dfb2784e37469aa2aac2f47b62a59508bc6

Threat Level: Known bad

The file bPbV.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

2023-08-21 15:09

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-21 15:09

Reported

2023-08-21 15:12

Platform

win7-20230712-en

Max time kernel

120s

Max time network

123s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3068 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\bPbV.exe C:\Windows\SysWOW64\cmd.exe
PID 3068 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\bPbV.exe C:\Windows\SysWOW64\cmd.exe
PID 3068 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\bPbV.exe C:\Windows\SysWOW64\cmd.exe
PID 3068 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\bPbV.exe C:\Windows\SysWOW64\cmd.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 tiagoodiaz.duckdns.org udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 tiagoodiaz.duckdns.org udp
SE 46.246.84.11:1994 tiagoodiaz.duckdns.org tcp

Files

memory/3068-54-0x0000000074E60000-0x000000007540B000-memory.dmp

memory/3068-55-0x0000000074E60000-0x000000007540B000-memory.dmp

memory/3068-56-0x0000000002230000-0x0000000002270000-memory.dmp

memory/3068-57-0x0000000074E60000-0x000000007540B000-memory.dmp

memory/3068-58-0x0000000074E60000-0x000000007540B000-memory.dmp

memory/3068-59-0x0000000002230000-0x0000000002270000-memory.dmp

memory/3068-60-0x0000000002230000-0x0000000002270000-memory.dmp

memory/3068-61-0x0000000002230000-0x0000000002270000-memory.dmp

memory/3068-62-0x0000000074E60000-0x000000007540B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-21 15:09

Reported

2023-08-21 15:12

Platform

win10v2004-20230703-en

Max time kernel

150s

Max time network

154s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 tiagoodiaz.duckdns.org udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 tiagoodiaz.duckdns.org udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp
US 8.8.8.8:53 tiagoodiaz.duckdns.org udp
SE 46.246.14.10:1994 tiagoodiaz.duckdns.org tcp

Files

memory/716-133-0x0000000075070000-0x0000000075621000-memory.dmp

memory/716-134-0x0000000075070000-0x0000000075621000-memory.dmp

memory/716-135-0x0000000000E00000-0x0000000000E10000-memory.dmp

memory/716-136-0x0000000075070000-0x0000000075621000-memory.dmp

memory/716-137-0x0000000075070000-0x0000000075621000-memory.dmp

memory/716-138-0x0000000000E00000-0x0000000000E10000-memory.dmp