Malware Analysis Report

2025-08-10 19:32

Sample ID 240224-ryrynsfc8t
Target a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6
SHA256 a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6
Tags
cobaltstrike backdoor trojan
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

a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6

Threat Level: Known bad

The file a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6 was found to be: Known bad.

Malicious Activity Summary

cobaltstrike backdoor trojan

Cobaltstrike

Unsigned PE

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-24 14:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-24 14:36

Reported

2024-02-24 14:39

Platform

win7-20240221-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe

"C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe"

Network

Country Destination Domain Proto
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp

Files

memory/2928-0-0x0000000002100000-0x0000000002101000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-24 14:36

Reported

2024-02-24 14:39

Platform

win10v2004-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe

"C:\Users\Admin\AppData\Local\Temp\a41465af0de8ca8e7a95a32df24a357e19d78e791a6fdea54eff7f496f63e1a6.exe"

Network

Country Destination Domain Proto
N/A 192.168.137.3:80 tcp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
N/A 192.168.137.3:80 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
N/A 192.168.137.3:80 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 206.178.17.96.in-addr.arpa udp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
N/A 192.168.137.3:80 tcp
US 8.8.8.8:53 udp

Files

memory/1120-0-0x00000214FCC00000-0x00000214FCC01000-memory.dmp