Malware Analysis Report

2025-08-05 20:07

Sample ID 240611-sa6mla1cre
Target 2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk
SHA256 d9cfd351fbc9d993ef075986312088c16b8bdfd980993bf27b9851dca25e820b
Tags
persistence
score
6/10

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
6/10

SHA256

d9cfd351fbc9d993ef075986312088c16b8bdfd980993bf27b9851dca25e820b

Threat Level: Shows suspicious behavior

The file 2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Adds Run key to start application

Enumerates connected drives

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 14:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-11 14:56

Reported

2024-06-11 14:58

Platform

win7-20240508-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bandera = "C:\\ProgramData\\rdpclient.exe" C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe"

Network

N/A

Files

memory/2060-0-0x0000000000110000-0x0000000000114000-memory.dmp

memory/2060-5-0x000000013F860000-0x000000013F8A1000-memory.dmp

memory/2060-10-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2060-8-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2060-4-0x0000000000110000-0x0000000000114000-memory.dmp

memory/2060-3-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2060-2-0x00000000000E0000-0x00000000000E7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 14:56

Reported

2024-06-11 14:58

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_62b9a1caf8fa6eba964f177d49578409_cobalt-strike_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/2944-0-0x000001BD21D20000-0x000001BD21D24000-memory.dmp

memory/2944-3-0x000001BD21D10000-0x000001BD21D15000-memory.dmp

memory/2944-2-0x00007FF76B890000-0x00007FF76B8D1000-memory.dmp

memory/2944-6-0x000001BD21D10000-0x000001BD21D15000-memory.dmp

memory/2944-5-0x000001BD21D20000-0x000001BD21D24000-memory.dmp

memory/2944-7-0x000001BD21CE0000-0x000001BD21CE7000-memory.dmp