Malware Analysis Report

2025-01-02 09:38

Sample ID 240510-b6fmlsbf51
Target a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe
SHA256 a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3
Tags
gcleaner loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3

Threat Level: Known bad

The file a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Deletes itself

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Program crash

Kills process with taskkill

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-10 01:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-10 01:45

Reported

2024-05-10 01:47

Platform

win7-20240508-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe"

Signatures

GCleaner

loader gcleaner

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe

"C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp

Files

memory/2208-1-0x0000000002FF0000-0x00000000030F0000-memory.dmp

memory/2208-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2208-2-0x00000000003C0000-0x00000000003ED000-memory.dmp

memory/2208-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2208-6-0x0000000002FF0000-0x00000000030F0000-memory.dmp

memory/2208-5-0x0000000000400000-0x0000000002B81000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-10 01:45

Reported

2024-05-10 01:48

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

161s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe

"C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 936

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 1344

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4256 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2748 -ip 2748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 1304

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a977eb01f51fb7c09cc433d7854d0cf228c46041a9a4c3de031a90cd43881cf3.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
DE 185.172.128.90:80 185.172.128.90 tcp
US 8.8.8.8:53 90.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 10.173.189.20.in-addr.arpa udp

Files

memory/2748-1-0x0000000002D00000-0x0000000002E00000-memory.dmp

memory/2748-2-0x00000000048D0000-0x00000000048FD000-memory.dmp

memory/2748-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2748-4-0x0000000000400000-0x0000000002B81000-memory.dmp

memory/2748-6-0x0000000002D00000-0x0000000002E00000-memory.dmp

memory/2748-7-0x00000000048D0000-0x00000000048FD000-memory.dmp

memory/2748-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2748-10-0x0000000000400000-0x0000000002B81000-memory.dmp