Malware Analysis Report

2025-04-13 23:42

Sample ID 230821-xq926shb6x
Target 84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe
SHA256 84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13
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

84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13

Threat Level: Known bad

The file 84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.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 19:04

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 19:04

Reported

2023-08-21 19:07

Platform

win7-20230712-en

Max time kernel

118s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe

"C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 fortuna777.duckdns.org udp
SE 46.246.84.11:1994 fortuna777.duckdns.org tcp

Files

memory/2912-53-0x00000000740C0000-0x000000007466B000-memory.dmp

memory/2912-55-0x0000000000470000-0x00000000004B0000-memory.dmp

memory/2912-54-0x00000000740C0000-0x000000007466B000-memory.dmp

memory/2912-56-0x00000000740C0000-0x000000007466B000-memory.dmp

memory/2912-57-0x00000000740C0000-0x000000007466B000-memory.dmp

memory/2912-58-0x0000000000470000-0x00000000004B0000-memory.dmp

memory/2912-59-0x00000000740C0000-0x000000007466B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-21 19:04

Reported

2023-08-21 19:07

Platform

win10v2004-20230703-en

Max time kernel

90s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe

"C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\84bf16e9fc3e8e8ca252e0d61340bdbf947d94e8aa4863452a75226331726e13_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 fortuna777.duckdns.org udp
SE 46.246.84.11:1994 fortuna777.duckdns.org tcp
US 8.8.8.8:53 11.84.246.46.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp

Files

memory/2924-133-0x0000000074840000-0x0000000074DF1000-memory.dmp

memory/2924-134-0x0000000074840000-0x0000000074DF1000-memory.dmp

memory/2924-135-0x0000000000BF0000-0x0000000000C00000-memory.dmp

memory/2924-136-0x0000000074840000-0x0000000074DF1000-memory.dmp

memory/2924-137-0x0000000074840000-0x0000000074DF1000-memory.dmp

memory/2924-138-0x0000000000BF0000-0x0000000000C00000-memory.dmp

memory/2924-139-0x0000000000BF0000-0x0000000000C00000-memory.dmp

memory/2924-141-0x0000000074840000-0x0000000074DF1000-memory.dmp