Malware Analysis Report

2025-01-02 09:43

Sample ID 240903-jx239a1gkp
Target f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40
SHA256 f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40
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

f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40

Threat Level: Known bad

The file f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40 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

Suspicious use of WriteProcessMemory

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 08:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 08:03

Reported

2024-09-03 08:06

Platform

win10v2004-20240802-en

Max time kernel

91s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.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\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.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\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe

"C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 456

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 932

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 1640

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3864 -ip 3864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 492

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" /f

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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.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 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/3864-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

memory/3864-2-0x0000000002360000-0x000000000239C000-memory.dmp

memory/3864-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3864-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3864-13-0x00000000006F0000-0x00000000007F0000-memory.dmp

memory/3864-16-0x0000000002360000-0x000000000239C000-memory.dmp

memory/3864-15-0x0000000000400000-0x00000000005FB000-memory.dmp

memory/3864-17-0x0000000000400000-0x000000000043F000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3864-29-0x0000000000400000-0x00000000005FB000-memory.dmp

memory/3864-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3864-35-0x0000000000400000-0x00000000005FB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 08:03

Reported

2024-09-03 08:06

Platform

win11-20240802-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.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\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.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\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe

"C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 868

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1656

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4768 -ip 4768

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f36829ff6541eb7136e7461f0c7f7d6eb50cc4d9cb97fad3e6a66062c29a6b40.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1604

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/4768-2-0x0000000002320000-0x000000000235C000-memory.dmp

memory/4768-1-0x0000000000840000-0x0000000000940000-memory.dmp

memory/4768-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4768-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4768-12-0x0000000000840000-0x0000000000940000-memory.dmp

memory/4768-14-0x0000000002320000-0x000000000235C000-memory.dmp

memory/4768-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4768-16-0x0000000000400000-0x00000000005FB000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\XKWRT8IT\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4768-29-0x0000000000400000-0x00000000005FB000-memory.dmp

memory/4768-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4768-35-0x0000000000400000-0x00000000005FB000-memory.dmp