Malware Analysis Report

2025-01-02 09:42

Sample ID 240902-19dd4azdqh
Target 081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66
SHA256 081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66
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

081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66

Threat Level: Known bad

The file 081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66 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

Program crash

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-02 22:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 22:20

Reported

2024-09-02 22:23

Platform

win10v2004-20240802-en

Max time kernel

96s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.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\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.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\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe

"C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 440

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 1668

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4992 -ip 4992

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 1632

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4992-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/4992-2-0x0000000002090000-0x00000000020CC000-memory.dmp

memory/4992-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4992-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4992-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4992-14-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/4992-16-0x0000000002090000-0x00000000020CC000-memory.dmp

memory/4992-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\THHXO5RX\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4992-35-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4992-36-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 22:20

Reported

2024-09-02 22:23

Platform

win11-20240802-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.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\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.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\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe

"C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 500

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 800

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 820

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 872

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 960

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 1068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3448 -ip 3448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 1636

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3448 -ip 3448

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "081fbac88752680976d7082de2c43f82ba90bcf85aa150957694b05d2a7b5d66.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 1704

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/3448-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/3448-2-0x00000000022C0000-0x00000000022FC000-memory.dmp

memory/3448-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3448-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3448-13-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/3448-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3448-16-0x00000000022C0000-0x00000000022FC000-memory.dmp

memory/3448-17-0x0000000000400000-0x000000000043F000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3448-35-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3448-36-0x0000000000400000-0x000000000043F000-memory.dmp