Malware Analysis Report

2025-01-18 00:41

Sample ID 240613-qvjx8averm
Target 2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk
SHA256 55ae63c450b0369a4688e750491e8c2c69cd841600b7b3c0333fcf92f5e3d438
Tags
score
3/10

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
3/10

SHA256

55ae63c450b0369a4688e750491e8c2c69cd841600b7b3c0333fcf92f5e3d438

Threat Level: Likely benign

The file 2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk was found to be: Likely benign.

Malicious Activity Summary


Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-13 13:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 13:34

Reported

2024-06-13 13:37

Platform

win7-20240221-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 112 -s 28

Network

N/A

Files

memory/112-1-0x00000000002E0000-0x00000000003E0000-memory.dmp

memory/112-2-0x00000000002E0000-0x00000000003E0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 13:34

Reported

2024-06-13 13:37

Platform

win10v2004-20240611-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.22.237:443 g.bing.com tcp
BE 23.41.178.32:443 www.bing.com tcp
US 8.8.8.8:53 237.22.107.13.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 32.178.41.23.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 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/3492-1-0x000001EF1F500000-0x000001EF1F600000-memory.dmp