Malware Analysis Report

2025-08-10 19:26

Sample ID 230713-yw247aah53
Target 40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660
SHA256 40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660
Tags
guloader discovery downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660

Threat Level: Known bad

The file 40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660 was found to be: Known bad.

Malicious Activity Summary

guloader discovery downloader

Guloader,Cloudeye

Loads dropped DLL

Checks installed software on the system

Enumerates physical storage devices

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-13 20:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-13 20:08

Reported

2023-07-13 20:11

Platform

win10-20230703-en

Max time kernel

124s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Checks installed software on the system

discovery

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660.exe

"C:\Users\Admin\AppData\Local\Temp\40b6dc77998b71663fd29997962bec3b46647e8ee70cf3d579aed14ead46d660.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.0.8.0.8.0.8.0.ip6.arpa udp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 9.57.101.20.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

\Users\Admin\AppData\Local\Temp\nscFD4F.tmp\System.dll

MD5 be2621a78a13a56cf09e00dd98488360
SHA1 75f0539dc6af200a07cdb056cddddec595c6cfd2
SHA256 852047023ba0cae91c7a43365878613cfb4e64e36ff98c460e113d5088d68ef5
SHA512 b80cf1f678e6885276b9a1bfd9227374b2eb9e38bb20446d52ebe2c3dba89764aa50cb4d49df51a974478f3364b5dbcbc5b4a16dc8f1123b40c89c01725be3d1

memory/4588-131-0x0000000005010000-0x0000000005F37000-memory.dmp

memory/4588-132-0x0000000005010000-0x0000000005F37000-memory.dmp