Malware Analysis Report

2025-08-05 14:07

Sample ID 230808-hs7x9sbb27
Target Femetageshuse.exe
SHA256 24f8a7c390962f0a9094dba45d9000ec7024e87adc7992740311775fcf0bd51d
Tags
guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

24f8a7c390962f0a9094dba45d9000ec7024e87adc7992740311775fcf0bd51d

Threat Level: Known bad

The file Femetageshuse.exe was found to be: Known bad.

Malicious Activity Summary

guloader downloader

Guloader,Cloudeye

Loads dropped DLL

Checks QEMU agent file

Enumerates physical storage devices

Program crash

NSIS installer

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-08-08 07:01

Signatures

NSIS installer

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-08 07:01

Reported

2023-08-08 07:03

Platform

win10v2004-20230703-en

Max time kernel

142s

Max time network

153s

Command Line

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

Signatures

Guloader,Cloudeye

downloader guloader

Checks QEMU agent file

Description Indicator Process Target
File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe C:\Users\Admin\AppData\Local\Temp\Femetageshuse.exe N/A

Loads dropped DLL

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

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Femetageshuse.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3836 -ip 3836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 2476

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 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.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 2.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 10.179.89.13.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsb8ABD.tmp\System.dll

MD5 4d3b19a81bd51f8ce44b93643a4e3a99
SHA1 35f8b00e85577b014080df98bd2c378351d9b3e9
SHA256 fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce
SHA512 b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

memory/3836-145-0x00000000051A0000-0x0000000006263000-memory.dmp

memory/3836-146-0x00000000051A0000-0x0000000006263000-memory.dmp

memory/3836-147-0x0000000077721000-0x0000000077841000-memory.dmp

memory/3836-148-0x00000000051A0000-0x0000000006263000-memory.dmp

memory/3836-149-0x0000000077721000-0x0000000077841000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-08 07:01

Reported

2023-08-08 07:03

Platform

win7-20230712-en

Max time kernel

122s

Max time network

126s

Command Line

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

Signatures

Checks QEMU agent file

Description Indicator Process Target
File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe C:\Users\Admin\AppData\Local\Temp\Femetageshuse.exe N/A

Loads dropped DLL

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

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Femetageshuse.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2528 -s 1832

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsy8FA4.tmp\System.dll

MD5 4d3b19a81bd51f8ce44b93643a4e3a99
SHA1 35f8b00e85577b014080df98bd2c378351d9b3e9
SHA256 fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce
SHA512 b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

memory/2528-67-0x0000000003980000-0x0000000004A43000-memory.dmp

memory/2528-68-0x0000000003980000-0x0000000004A43000-memory.dmp

memory/2528-69-0x0000000077880000-0x0000000077A29000-memory.dmp

memory/2528-70-0x0000000077A70000-0x0000000077B46000-memory.dmp