Malware Analysis Report

2025-04-13 23:43

Sample ID 230814-yw7pnsha6s
Target bOTj.exe
SHA256 d6ad84287643e005e6a53037fbddd106b224524ad2b6157eee6445942cb6a954
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

d6ad84287643e005e6a53037fbddd106b224524ad2b6157eee6445942cb6a954

Threat Level: Known bad

The file bOTj.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

2023-08-14 20:09

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-14 20:09

Reported

2023-08-14 20:11

Platform

win7-20230712-en

Max time kernel

117s

Max time network

119s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2580 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe
PID 2580 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe
PID 2580 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe
PID 2580 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 fortuna777.duckdns.org udp
SE 46.246.14.22:1994 fortuna777.duckdns.org tcp
SE 46.246.14.22:1994 fortuna777.duckdns.org tcp

Files

memory/2580-53-0x00000000742A0000-0x000000007484B000-memory.dmp

memory/2580-54-0x00000000742A0000-0x000000007484B000-memory.dmp

memory/2580-55-0x0000000000380000-0x00000000003C0000-memory.dmp

memory/2580-56-0x00000000742A0000-0x000000007484B000-memory.dmp

memory/2580-57-0x00000000742A0000-0x000000007484B000-memory.dmp

memory/2580-58-0x0000000000380000-0x00000000003C0000-memory.dmp

memory/2580-59-0x0000000000380000-0x00000000003C0000-memory.dmp

memory/2580-60-0x00000000742A0000-0x000000007484B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-14 20:09

Reported

2023-08-14 20:11

Platform

win10v2004-20230703-en

Max time kernel

142s

Max time network

147s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3084 wrote to memory of 844 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe
PID 3084 wrote to memory of 844 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe
PID 3084 wrote to memory of 844 N/A C:\Users\Admin\AppData\Local\Temp\bOTj.exe C:\Windows\SysWOW64\cmd.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 254.134.241.8.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.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 46.246.14.22:1994 fortuna777.duckdns.org tcp
US 8.8.8.8:53 22.14.246.46.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 254.135.241.8.in-addr.arpa udp
US 8.8.8.8:53 63.13.109.52.in-addr.arpa udp
US 8.8.8.8:53 8.179.89.13.in-addr.arpa udp

Files

memory/3084-133-0x0000000075080000-0x0000000075631000-memory.dmp

memory/3084-134-0x0000000075080000-0x0000000075631000-memory.dmp

memory/3084-135-0x00000000013B0000-0x00000000013C0000-memory.dmp

memory/3084-136-0x0000000075080000-0x0000000075631000-memory.dmp

memory/3084-137-0x0000000075080000-0x0000000075631000-memory.dmp

memory/3084-138-0x00000000013B0000-0x00000000013C0000-memory.dmp

memory/3084-140-0x0000000075080000-0x0000000075631000-memory.dmp