Malware Analysis Report

2025-01-02 09:38

Sample ID 240511-cg6m6shh27
Target ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe
SHA256 ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf
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

ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf

Threat Level: Known bad

The file ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Checks computer location settings

Deletes itself

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-11 02:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-11 02:03

Reported

2024-05-11 02:06

Platform

win7-20240419-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.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\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe

"C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp

Files

memory/1752-1-0x0000000000400000-0x000000000257B000-memory.dmp

memory/1752-4-0x0000000000400000-0x000000000257B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-11 02:03

Reported

2024-05-11 02:06

Platform

win10v2004-20240508-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.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\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe

"C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe"

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 --field-trial-handle=1288,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=4104 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 744

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 980

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1020

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1356

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1284

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "ff8f82b43811e61b65d707f35cac31af19e0fa5d7a15e920e665524a18ca1fdf.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2532 -ip 2532

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1460

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp

Files

memory/2532-2-0x0000000002900000-0x0000000002A00000-memory.dmp

memory/2532-4-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2532-3-0x00000000026D0000-0x00000000026FD000-memory.dmp

memory/2532-1-0x0000000000400000-0x000000000257B000-memory.dmp

memory/2532-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2532-6-0x0000000000400000-0x000000000257B000-memory.dmp