Malware Analysis Report

2025-08-05 14:07

Sample ID 230807-jz1yzaff2z
Target 849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700
SHA256 849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700
Tags
guloader downloader
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

849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700

Threat Level: Known bad

The file 849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700 was found to be: Known bad.

Malicious Activity Summary

guloader downloader

Guloader,Cloudeye

Unsigned PE

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-07 08:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-07 08:07

Reported

2023-08-07 08:09

Platform

win7-20230712-en

Max time kernel

118s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe

"C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe"

Network

N/A

Files

memory/2468-56-0x0000000000330000-0x0000000000344000-memory.dmp

memory/2468-57-0x0000000000330000-0x0000000000344000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-07 08:07

Reported

2023-08-07 08:09

Platform

win10v2004-20230703-en

Max time kernel

127s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe

"C:\Users\Admin\AppData\Local\Temp\849e38b7c2f704de72deb89b4696fc02fb4fa8fe4329e09525b2881dde3d8700.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 163.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 45.8.109.52.in-addr.arpa udp
US 8.8.8.8:53 254.22.238.8.in-addr.arpa udp
US 8.8.8.8:53 8.179.89.13.in-addr.arpa udp

Files

memory/1628-135-0x0000000002C00000-0x0000000002C14000-memory.dmp

memory/1628-136-0x0000000002C00000-0x0000000002C14000-memory.dmp