Malware Analysis Report

2024-10-19 06:19

Sample ID 240624-rxxsjazhln
Target 2024-06-24_5db2db595d891a4285384266d430988b_ryuk
SHA256 9f3a91db555da8542f6c94b89ff9f48b2718f7fe556faf99641ec42233aaf7ea
Tags
cobaltstrike backdoor persistence trojan
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

9f3a91db555da8542f6c94b89ff9f48b2718f7fe556faf99641ec42233aaf7ea

Threat Level: Known bad

The file 2024-06-24_5db2db595d891a4285384266d430988b_ryuk was found to be: Known bad.

Malicious Activity Summary

cobaltstrike backdoor persistence trojan

Cobaltstrike

Adds Run key to start application

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-24 14:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 14:34

Reported

2024-06-24 14:37

Platform

win7-20240419-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe"

Signatures

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 14:34

Reported

2024-06-24 14:37

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

59s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Security = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe" C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-24_5db2db595d891a4285384266d430988b_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 dash.clayonedom.bond udp
US 8.8.8.8:53 dash.clayonedom.bond udp
US 8.8.8.8:53 dash.clayonedom.bond udp

Files

memory/1588-0-0x00000144DD680000-0x00000144DD681000-memory.dmp