Malware Analysis Report

2025-01-02 09:43

Sample ID 240905-zlfzmsyfrq
Target 5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530
SHA256 5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530
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

5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530

Threat Level: Known bad

The file 5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530 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 AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-05 20:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-05 20:48

Reported

2024-09-05 20:50

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.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\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.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\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe

"C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 456

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 1004

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 1088

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 756 -ip 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 1328

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 756 -ip 756

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 492

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.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 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/756-1-0x0000000002540000-0x0000000002640000-memory.dmp

memory/756-2-0x00000000040B0000-0x00000000040EB000-memory.dmp

memory/756-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/756-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/756-13-0x0000000002540000-0x0000000002640000-memory.dmp

memory/756-16-0x00000000040B0000-0x00000000040EB000-memory.dmp

memory/756-15-0x0000000000400000-0x000000000247C000-memory.dmp

memory/756-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\H9MX5QVK\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/756-29-0x0000000000400000-0x000000000247C000-memory.dmp

memory/756-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/756-35-0x0000000000400000-0x000000000247C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-05 20:48

Reported

2024-09-05 20:50

Platform

win11-20240802-en

Max time kernel

90s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.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\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.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\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe

"C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 888

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 1104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 1236

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 1656

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3748 -ip 3748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 488

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "5a6a47978b8c46c9e142c82f59f9989c9fde81960c446eb144da35adcc36b530.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

Files

memory/3748-1-0x0000000002740000-0x0000000002840000-memory.dmp

memory/3748-2-0x00000000042E0000-0x000000000431B000-memory.dmp

memory/3748-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3748-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3748-13-0x0000000002740000-0x0000000002840000-memory.dmp

memory/3748-15-0x00000000042E0000-0x000000000431B000-memory.dmp

memory/3748-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3748-16-0x0000000000400000-0x000000000247C000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\01ME7Y5O\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3748-34-0x0000000000400000-0x000000000247C000-memory.dmp

memory/3748-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3748-35-0x0000000000400000-0x000000000247C000-memory.dmp