Malware Analysis Report

2025-01-02 09:42

Sample ID 240903-y1vkxaxbjd
Target f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea
SHA256 f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea
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

f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea

Threat Level: Known bad

The file f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 20:15

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 20:15

Reported

2024-09-03 20:18

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe

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\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.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\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe

"C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 784

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1004

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1572

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 492

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1592

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4816 -ip 4816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1676

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.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 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/4816-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

memory/4816-2-0x0000000000790000-0x00000000007CC000-memory.dmp

memory/4816-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4816-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4816-13-0x00000000007E0000-0x00000000008E0000-memory.dmp

memory/4816-16-0x0000000000790000-0x00000000007CC000-memory.dmp

memory/4816-15-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4816-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\OD2FK6XO\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4816-27-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4816-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4816-35-0x0000000000400000-0x00000000005FE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 20:15

Reported

2024-09-03 20:18

Platform

win11-20240802-en

Max time kernel

69s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe

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\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.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\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe

"C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1088

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1388

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1648

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 488

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1696

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2136 -ip 2136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1616

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
US 20.189.173.2:443 tcp

Files

memory/2136-1-0x0000000000890000-0x0000000000990000-memory.dmp

memory/2136-2-0x0000000002440000-0x000000000247C000-memory.dmp

memory/2136-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2136-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2136-13-0x0000000000890000-0x0000000000990000-memory.dmp

memory/2136-15-0x0000000002440000-0x000000000247C000-memory.dmp

memory/2136-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2136-16-0x0000000000400000-0x00000000005FE000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JL3S1NU9\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2136-29-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2136-35-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2136-36-0x0000000000400000-0x000000000043F000-memory.dmp