Malware Analysis Report

2025-01-02 09:35

Sample ID 240508-p6xg1sga75
Target fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee
SHA256 fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee
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

fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee

Threat Level: Known bad

The file fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Checks computer location settings

Program crash

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-08 12:57

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-08 12:57

Reported

2024-05-08 12:59

Platform

win11-20240419-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe"

Signatures

GCleaner

loader gcleaner

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\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe

"C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 824

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 1080

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 1444

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4428 -ip 4428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 1340

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" /f

Network

Country Destination Domain Proto
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

Files

memory/4428-1-0x0000000001C60000-0x0000000001D60000-memory.dmp

memory/4428-2-0x0000000001C30000-0x0000000001C5D000-memory.dmp

memory/4428-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4428-6-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4428-5-0x0000000000400000-0x0000000001A0A000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 12:57

Reported

2024-05-08 12:59

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.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\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe

"C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 824

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 1000

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 1332

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4444 -ip 4444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 1380

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "fff31117cf0553890314f22b694ad3166d361e05f664061734169643e4dcceee.exe" /f

Network

Country Destination Domain Proto
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 4.173.189.20.in-addr.arpa udp

Files

memory/4444-1-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

memory/4444-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4444-2-0x0000000003650000-0x000000000367D000-memory.dmp

memory/4444-6-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4444-5-0x0000000000400000-0x0000000001A0A000-memory.dmp