Malware Analysis Report

2025-08-05 20:07

Sample ID 240611-sj7ags1enf
Target 2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk
SHA256 5749cbd7c8791265cd5e6372d6d5a141f1c0aa7bebba0864b146a68683e39c9a
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

5749cbd7c8791265cd5e6372d6d5a141f1c0aa7bebba0864b146a68683e39c9a

Threat Level: Shows suspicious behavior

The file 2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Adds Run key to start application

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 15:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-11 15:10

Reported

2024-06-11 15:12

Platform

win7-20231129-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_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_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe"

Network

N/A

Files

memory/2896-3-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2896-2-0x000000013FAE0000-0x000000013FB21000-memory.dmp

memory/2896-0-0x0000000000910000-0x0000000000914000-memory.dmp

memory/2896-12-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2896-11-0x0000000000910000-0x0000000000914000-memory.dmp

memory/2896-10-0x0000000000100000-0x0000000000105000-memory.dmp

memory/2896-9-0x00000000000E0000-0x00000000000E7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 15:10

Reported

2024-06-11 15:12

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c1357900785b368cebd03562b0411033_cobalt-strike_ryuk.exe"

Network

Files

memory/1128-0-0x000001C215F20000-0x000001C215F24000-memory.dmp

memory/1128-3-0x000001C215F00000-0x000001C215F05000-memory.dmp

memory/1128-5-0x000001C215F00000-0x000001C215F05000-memory.dmp

memory/1128-2-0x00007FF7EECC0000-0x00007FF7EED01000-memory.dmp

memory/1128-6-0x000001C214600000-0x000001C214607000-memory.dmp