Malware Analysis Report

2024-10-23 20:54

Sample ID 240211-gm1fkafd83
Target 3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe
SHA256 3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4
Tags
nyan cat njrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4

Threat Level: Known bad

The file 3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe was found to be: Known bad.

Malicious Activity Summary

nyan cat njrat

Njrat family

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Enumerates system info in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-11 05:56

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-11 05:56

Reported

2024-02-11 05:58

Platform

win7-20231215-en

Max time kernel

148s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe

"C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 patria.duckdns.org udp
SE 46.246.6.12:1995 patria.duckdns.org tcp

Files

memory/2108-0-0x0000000074C50000-0x00000000751FB000-memory.dmp

memory/2108-1-0x0000000074C50000-0x00000000751FB000-memory.dmp

memory/2108-2-0x0000000000B90000-0x0000000000BD0000-memory.dmp

memory/2108-3-0x0000000074C50000-0x00000000751FB000-memory.dmp

memory/2108-4-0x0000000074C50000-0x00000000751FB000-memory.dmp

memory/2108-5-0x0000000000B90000-0x0000000000BD0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-11 05:56

Reported

2024-02-11 05:58

Platform

win10v2004-20231215-en

Max time kernel

90s

Max time network

92s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe"

Signatures

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe

"C:\Users\Admin\AppData\Local\Temp\3584010af4c61f06ddedbc2d740c5c787ac08e62e00f6ec267cd73baef3b21f4.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

dw20.exe -x -s 452

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4640-0-0x0000000075020000-0x00000000755D1000-memory.dmp

memory/4640-1-0x0000000000D00000-0x0000000000D10000-memory.dmp

memory/4640-2-0x0000000075020000-0x00000000755D1000-memory.dmp

memory/4640-9-0x0000000075020000-0x00000000755D1000-memory.dmp