Malware Analysis Report

2025-01-02 09:40

Sample ID 240901-3ljbjswbpf
Target 8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774
SHA256 8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774
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

8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774

Threat Level: Known bad

The file 8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Checks computer location settings

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 23:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 23:36

Reported

2024-09-01 23:38

Platform

win10v2004-20240802-en

Max time kernel

96s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.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\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.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\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe

"C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 732

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 824

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1016

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1444

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1464

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 71.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/4860-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

memory/4860-2-0x0000000000850000-0x000000000087D000-memory.dmp

memory/4860-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4860-8-0x00000000008F0000-0x00000000009F0000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3GJVVK7B\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4860-11-0x0000000000850000-0x000000000087D000-memory.dmp

memory/4860-10-0x0000000000400000-0x00000000005FA000-memory.dmp

memory/4860-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4860-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4860-21-0x0000000000400000-0x00000000005FA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 23:36

Reported

2024-09-01 23:38

Platform

win11-20240802-en

Max time kernel

147s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe"

Signatures

GCleaner

loader gcleaner

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:\Windows\SysWOW64\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe

"C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 828

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 956

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4468 -ip 4468

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 1516

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4468 -ip 4468

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8f647e3e093b0ddd56b4ba3b3e6ef6297f8f27d20089c6d4ff5af5b66cf66774.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 1476

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/4468-2-0x0000000002460000-0x000000000248D000-memory.dmp

memory/4468-1-0x0000000000770000-0x0000000000870000-memory.dmp

memory/4468-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4468-8-0x0000000000770000-0x0000000000870000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\M3DUQV5R\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4468-10-0x0000000002460000-0x000000000248D000-memory.dmp

memory/4468-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4468-11-0x0000000000400000-0x00000000005FA000-memory.dmp

memory/4468-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4468-21-0x0000000000400000-0x00000000005FA000-memory.dmp