Malware Analysis Report

2025-01-02 09:44

Sample ID 240903-2834sszdqr
Target a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae
SHA256 a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae
Tags
gcleaner discovery loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae

Threat Level: Known bad

The file a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Program crash

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 23:16

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 23:16

Reported

2024-09-03 23:18

Platform

win11-20240802-en

Max time kernel

32s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.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\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.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\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe

"C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 828

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 984

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1256

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1720

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 444 -ip 444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 488

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f

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/444-1-0x0000000000870000-0x0000000000970000-memory.dmp

memory/444-2-0x0000000002310000-0x000000000234C000-memory.dmp

memory/444-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/444-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/444-13-0x0000000000870000-0x0000000000970000-memory.dmp

memory/444-15-0x0000000002310000-0x000000000234C000-memory.dmp

memory/444-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/444-16-0x0000000000400000-0x00000000005FE000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/444-29-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/444-35-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/444-36-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 23:16

Reported

2024-09-03 23:18

Platform

win10v2004-20240802-en

Max time kernel

92s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.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\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.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\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe

"C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 456

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 872

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 1004

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 1560

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3996 -ip 3996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 492

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.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 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
IE 52.111.236.23:443 tcp

Files

memory/3996-1-0x0000000000980000-0x0000000000A80000-memory.dmp

memory/3996-2-0x0000000002330000-0x000000000236C000-memory.dmp

memory/3996-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3996-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3996-13-0x0000000000980000-0x0000000000A80000-memory.dmp

memory/3996-16-0x0000000002330000-0x000000000236C000-memory.dmp

memory/3996-15-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/3996-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5JGBC19U\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3996-27-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/3996-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3996-35-0x0000000000400000-0x00000000005FE000-memory.dmp