Malware Analysis Report

2025-08-05 14:06

Sample ID 230808-jfydqscg7y
Target 398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391
SHA256 398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391
Tags
guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391

Threat Level: Known bad

The file 398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391 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

2023-08-08 07:37

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-08 07:37

Reported

2023-08-08 07:39

Platform

win10v2004-20230703-en

Max time kernel

125s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe

"C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 104.193.132.51.in-addr.arpa udp

Files

memory/1940-135-0x00000000021F0000-0x00000000021FE000-memory.dmp

memory/1940-136-0x00000000021F0000-0x00000000021FE000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-08 07:37

Reported

2023-08-08 07:39

Platform

win7-20230712-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe

"C:\Users\Admin\AppData\Local\Temp\398b8e9702b5f4f831803954197794ed95a8cf146388b06ac939eff85c85f391.exe"

Network

N/A

Files

memory/1164-56-0x0000000000230000-0x000000000023E000-memory.dmp