Malware Analysis Report

2025-01-02 09:41

Sample ID 240902-z8vfjsydpf
Target 8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45
SHA256 8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45
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

8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45

Threat Level: Known bad

The file 8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-02 21:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 21:23

Reported

2024-09-02 21:26

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.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\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.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\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.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\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe

"C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 472

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 520

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 788

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 828

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 912

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 988

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1544

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4908 -ip 4908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1488

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.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 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp

Files

memory/4908-1-0x0000000000460000-0x0000000000560000-memory.dmp

memory/4908-2-0x00000000006E0000-0x000000000071C000-memory.dmp

memory/4908-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4908-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4908-13-0x0000000000460000-0x0000000000560000-memory.dmp

memory/4908-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4908-16-0x00000000006E0000-0x000000000071C000-memory.dmp

memory/4908-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ZK5NPJWQ\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4908-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4908-35-0x0000000000400000-0x0000000000453000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 21:23

Reported

2024-09-02 21:26

Platform

win11-20240802-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.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\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.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\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe

"C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 848

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 1080

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2992 -ip 2992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 1068

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2992 -ip 2992

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8a843dd2a268a19fc36a9209d02882cbd0ed3771648668356f3e0f43776b8a45.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 2900

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/2992-1-0x0000000000770000-0x0000000000870000-memory.dmp

memory/2992-2-0x0000000000710000-0x000000000074C000-memory.dmp

memory/2992-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2992-4-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2992-7-0x0000000000770000-0x0000000000870000-memory.dmp

memory/2992-8-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2992-9-0x0000000000710000-0x000000000074C000-memory.dmp

memory/2992-10-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2992-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2992-18-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2992-19-0x0000000000400000-0x000000000043F000-memory.dmp