Malware Analysis Report

2025-06-16 02:11

Sample ID 240402-wv5gtahd5y
Target e5b185c02ef1aa5361ba6fb910758288.exe
SHA256 b85e0613ef25472f1001e21c2cc4c80ccb133477751927cd9d885a6e2d5661f1
Tags
gcleaner loader
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

b85e0613ef25472f1001e21c2cc4c80ccb133477751927cd9d885a6e2d5661f1

Threat Level: Known bad

The file e5b185c02ef1aa5361ba6fb910758288.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 AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 18:15

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 18:15

Reported

2024-04-02 18:18

Platform

win10v2004-20240226-en

Max time kernel

115s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.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\e5b185c02ef1aa5361ba6fb910758288.exe

"C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 808

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 980

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1016

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1352

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e5b185c02ef1aa5361ba6fb910758288.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1180 -ip 1180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1388

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e5b185c02ef1aa5361ba6fb910758288.exe" /f

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=3820 --field-trial-handle=2496,i,15897292497548307209,13920214570023230813,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.177.190.20.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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
GB 142.250.187.234:443 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 41.110.86.104.in-addr.arpa udp

Files

memory/1180-1-0x0000000000D10000-0x0000000000E10000-memory.dmp

memory/1180-2-0x0000000000C90000-0x0000000000CBD000-memory.dmp

memory/1180-3-0x0000000000400000-0x0000000000AF0000-memory.dmp

memory/1180-5-0x0000000000400000-0x0000000000AF0000-memory.dmp

memory/1180-6-0x0000000000C90000-0x0000000000CBD000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 18:15

Reported

2024-04-02 18:18

Platform

win7-20240319-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.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\e5b185c02ef1aa5361ba6fb910758288.exe

"C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e5b185c02ef1aa5361ba6fb910758288.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e5b185c02ef1aa5361ba6fb910758288.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e5b185c02ef1aa5361ba6fb910758288.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp

Files

memory/2908-1-0x0000000000B60000-0x0000000000C60000-memory.dmp

memory/2908-2-0x00000000002A0000-0x00000000002CD000-memory.dmp

memory/2908-3-0x0000000000400000-0x0000000000AF0000-memory.dmp

memory/2908-5-0x0000000000400000-0x0000000000AF0000-memory.dmp

memory/2908-6-0x0000000000B60000-0x0000000000C60000-memory.dmp