Malware Analysis Report

2025-01-02 09:46

Sample ID 240831-vr93fsvhrh
Target aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159
SHA256 aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159
Tags
gcleaner discovery 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

aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159

Threat Level: Known bad

The file aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Kills process with taskkill

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 17:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 17:14

Reported

2024-08-31 17:17

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\taskkill.exe N/A

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\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe

"C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 1000

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 1568

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4104 -ip 4104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 1656

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
RU 80.66.75.114:80 80.66.75.114 tcp
US 8.8.8.8:53 114.75.66.80.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4104-1-0x0000000000740000-0x0000000000840000-memory.dmp

memory/4104-2-0x00000000006C0000-0x00000000006FC000-memory.dmp

memory/4104-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4104-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4104-12-0x0000000000740000-0x0000000000840000-memory.dmp

memory/4104-15-0x00000000006C0000-0x00000000006FC000-memory.dmp

memory/4104-14-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/4104-16-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\KDOTUZKP\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4104-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4104-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 17:14

Reported

2024-08-31 17:17

Platform

win11-20240802-en

Max time kernel

146s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\taskkill.exe N/A

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\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe

"C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 848

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 1460

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 1732

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 952 -ip 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 488

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "aec537c48423c982cb0f7e7d8cba78e2fd80eb6d865e73be476a23f009cf6159.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp
US 8.8.8.8:53 114.75.66.80.in-addr.arpa udp
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/952-1-0x0000000000940000-0x0000000000A40000-memory.dmp

memory/952-2-0x00000000008D0000-0x000000000090C000-memory.dmp

memory/952-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/952-7-0x0000000000940000-0x0000000000A40000-memory.dmp

memory/952-8-0x00000000008D0000-0x000000000090C000-memory.dmp

memory/952-10-0x0000000000400000-0x000000000043F000-memory.dmp

memory/952-9-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/952-12-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\TK007ZTY\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/952-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/952-35-0x0000000000400000-0x00000000005F7000-memory.dmp