Malware Analysis Report

2024-10-23 20:54

Sample ID 240212-sjtpdsgh3y
Target bT5b.exe
SHA256 7d86de2d2e6cd118653666fd446f52370e890e3f72ba30de620abdea1f514822
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

7d86de2d2e6cd118653666fd446f52370e890e3f72ba30de620abdea1f514822

Threat Level: Known bad

The file bT5b.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

2024-02-12 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

2024-02-12 15:09

Reported

2024-02-12 15:12

Platform

win7-20231215-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2804 wrote to memory of 1628 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 1628 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 1628 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 1628 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bT5b.exe

"C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 patria.duckdns.org udp
SE 46.246.80.9:1995 patria.duckdns.org tcp

Files

memory/2804-0-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2804-1-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2804-2-0x00000000020A0000-0x00000000020E0000-memory.dmp

memory/2804-3-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2804-4-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2804-5-0x00000000020A0000-0x00000000020E0000-memory.dmp

memory/2804-6-0x00000000020A0000-0x00000000020E0000-memory.dmp

memory/2804-7-0x0000000074BE0000-0x000000007518B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-12 15:09

Reported

2024-02-12 15:12

Platform

win10v2004-20231215-en

Max time kernel

92s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1356 wrote to memory of 4108 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe
PID 1356 wrote to memory of 4108 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe
PID 1356 wrote to memory of 4108 N/A C:\Users\Admin\AppData\Local\Temp\bT5b.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bT5b.exe

"C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\bT5b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 patria.duckdns.org udp
SE 46.246.80.9:1995 patria.duckdns.org tcp
US 8.8.8.8:53 9.80.246.46.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp

Files

memory/1356-0-0x00000000746A0000-0x0000000074C51000-memory.dmp

memory/1356-1-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/1356-2-0x00000000746A0000-0x0000000074C51000-memory.dmp

memory/1356-3-0x00000000746A0000-0x0000000074C51000-memory.dmp

memory/1356-4-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/1356-6-0x00000000746A0000-0x0000000074C51000-memory.dmp