Malware Analysis Report

2025-01-02 09:43

Sample ID 240903-vfsc9s1fkp
Target 548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499
SHA256 548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499
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

548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499

Threat Level: Known bad

The file 548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 16:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 16:56

Reported

2024-09-03 16:58

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.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\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.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\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe

"C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 876

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 936

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 1052

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 1560

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 1680

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.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 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/2608-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

memory/2608-2-0x0000000002250000-0x000000000228C000-memory.dmp

memory/2608-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2608-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2608-13-0x00000000008B0000-0x00000000009B0000-memory.dmp

memory/2608-16-0x0000000002250000-0x000000000228C000-memory.dmp

memory/2608-15-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2608-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\68XY2BI1\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2608-27-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2608-35-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2608-36-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 16:56

Reported

2024-09-03 16:58

Platform

win11-20240802-en

Max time kernel

92s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.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:\Windows\SysWOW64\cmd.exe N/A
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\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.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\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe

"C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 868

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2100 -ip 2100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 1648

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2100 -ip 2100

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "548bc8bc69c5fb00f410b5a43eb9ce0150884de44fbfec0f858c8110c7ce9499.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 492

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/2100-1-0x0000000000860000-0x0000000000960000-memory.dmp

memory/2100-2-0x0000000002440000-0x000000000247C000-memory.dmp

memory/2100-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2100-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2100-13-0x0000000000860000-0x0000000000960000-memory.dmp

memory/2100-15-0x0000000002440000-0x000000000247C000-memory.dmp

memory/2100-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2100-16-0x0000000000400000-0x00000000005FE000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LQOABF8X\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2100-34-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2100-36-0x0000000000400000-0x000000000043F000-memory.dmp