Malware Analysis Report

2025-04-13 23:42

Sample ID 230812-wcllzsfc3w
Target d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe
SHA256 d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5
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

d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5

Threat Level: Known bad

The file d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe was found to be: Known bad.

Malicious Activity Summary

nyan cat njrat

Njrat family

Unsigned PE

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-12 17:46

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-12 17:46

Reported

2023-08-12 17:49

Platform

win7-20230712-en

Max time kernel

149s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe

"C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 estreno1-caso.duckdns.org udp
CO 177.255.88.161:2525 estreno1-caso.duckdns.org tcp

Files

memory/1892-54-0x0000000074AC0000-0x000000007506B000-memory.dmp

memory/1892-56-0x0000000002270000-0x00000000022B0000-memory.dmp

memory/1892-55-0x0000000074AC0000-0x000000007506B000-memory.dmp

memory/1892-57-0x0000000074AC0000-0x000000007506B000-memory.dmp

memory/1892-58-0x0000000074AC0000-0x000000007506B000-memory.dmp

memory/1892-59-0x0000000002270000-0x00000000022B0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-12 17:46

Reported

2023-08-12 17:49

Platform

win10v2004-20230703-en

Max time kernel

149s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe

"C:\Users\Admin\AppData\Local\Temp\d7443e8971985f4cbd75219edfdedde221be125432c421d6b0d1537f7d8b36d5_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 163.252.72.23.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 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 estreno1-caso.duckdns.org udp
CO 177.255.88.161:2525 estreno1-caso.duckdns.org tcp
US 8.8.8.8:53 161.88.255.177.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 26.178.89.13.in-addr.arpa udp

Files

memory/1796-133-0x0000000075580000-0x0000000075B31000-memory.dmp

memory/1796-134-0x0000000075580000-0x0000000075B31000-memory.dmp

memory/1796-135-0x0000000001B20000-0x0000000001B30000-memory.dmp

memory/1796-136-0x0000000075580000-0x0000000075B31000-memory.dmp

memory/1796-137-0x0000000075580000-0x0000000075B31000-memory.dmp