Malware Analysis Report

2025-08-10 19:32

Sample ID 240225-je699aff4s
Target b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b
SHA256 b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b
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

b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b

Threat Level: Known bad

The file b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b 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

2024-02-25 07:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-25 07:35

Reported

2024-02-25 07:38

Platform

win7-20240221-en

Max time kernel

135s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe

"C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe"

Network

Country Destination Domain Proto
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp

Files

memory/1184-0-0x0000000000750000-0x0000000000751000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-25 07:35

Reported

2024-02-25 07:38

Platform

win10v2004-20240221-en

Max time kernel

140s

Max time network

158s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe

"C:\Users\Admin\AppData\Local\Temp\b791bd10759619ad5bf3c1f443d1208336da894686c1b9c9f7f82bfe70f7d59b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
CN 118.31.75.32:1145 tcp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
CN 118.31.75.32:1145 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
CN 118.31.75.32:1145 tcp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
CN 118.31.75.32:1145 tcp
CN 118.31.75.32:1145 tcp
US 8.8.8.8:53 105.193.132.51.in-addr.arpa udp

Files

memory/4672-0-0x00000273EB4A0000-0x00000273EB4A1000-memory.dmp