Malware Analysis Report

2025-01-02 09:47

Sample ID 240901-vbr7psxanb
Target a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a
SHA256 a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a
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

a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a

Threat Level: Known bad

The file a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a 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

Unsigned PE

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

2024-09-01 16:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 16:49

Reported

2024-09-01 16:51

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.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\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.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\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe

"C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 456

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 1000

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 1568

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2816 -ip 2816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 516

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/2816-1-0x0000000000710000-0x0000000000810000-memory.dmp

memory/2816-2-0x0000000002330000-0x000000000236C000-memory.dmp

memory/2816-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2816-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2816-13-0x0000000000710000-0x0000000000810000-memory.dmp

memory/2816-16-0x0000000002330000-0x000000000236C000-memory.dmp

memory/2816-15-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/2816-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JACP9GNT\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2816-27-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/2816-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2816-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 16:49

Reported

2024-09-01 16:51

Platform

win11-20240802-en

Max time kernel

91s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.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\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\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.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\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe

"C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 476

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 816

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 888

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1768

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2156 -ip 2156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1720

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.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/2156-1-0x0000000000820000-0x0000000000920000-memory.dmp

memory/2156-2-0x00000000007E0000-0x000000000081C000-memory.dmp

memory/2156-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2156-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2156-13-0x0000000000820000-0x0000000000920000-memory.dmp

memory/2156-15-0x00000000007E0000-0x000000000081C000-memory.dmp

memory/2156-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2156-16-0x0000000000400000-0x00000000005F7000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P6H4A3UA\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2156-31-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/2156-35-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/2156-36-0x0000000000400000-0x000000000043F000-memory.dmp