Malware Analysis Report

2025-01-02 09:45

Sample ID 240903-v568qasbnr
Target 44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486
SHA256 44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486
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

44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486

Threat Level: Known bad

The file 44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Deletes itself

Checks computer location settings

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Kills process with taskkill

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 17:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 17:35

Reported

2024-09-03 17:38

Platform

win7-20240903-en

Max time kernel

119s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.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:\Windows\SysWOW64\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.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\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe

"C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2796-1-0x0000000000A60000-0x0000000000B60000-memory.dmp

memory/2796-2-0x00000000003B0000-0x00000000003EC000-memory.dmp

memory/2796-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2796-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2796-13-0x0000000000A60000-0x0000000000B60000-memory.dmp

memory/2796-15-0x00000000003B0000-0x00000000003EC000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\YTZJPBOG\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2796-18-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2796-17-0x0000000000400000-0x00000000005FE000-memory.dmp

\Users\Admin\AppData\Local\Temp\jH727oy8V\Y-Cleaner.exe

MD5 a8cf5621811f7fac55cfe8cb3fa6b9f6
SHA1 121356839e8138a03141f5f5856936a85bd2a474
SHA256 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c
SHA512 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

memory/2796-35-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2796-37-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2796-36-0x0000000000A60000-0x0000000000B60000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 17:35

Reported

2024-09-03 17:38

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.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:\Windows\SysWOW64\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.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\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe

"C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 1020

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2944 -ip 2944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 1560

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2944 -ip 2944

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "44e24536e35b628e100cdf680c24818294bf3e4553458df64a02b75686977486.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 1680

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.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 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 213.143.182.52.in-addr.arpa udp

Files

memory/2944-1-0x0000000000680000-0x0000000000780000-memory.dmp

memory/2944-2-0x0000000002380000-0x00000000023BC000-memory.dmp

memory/2944-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2944-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2944-13-0x0000000000680000-0x0000000000780000-memory.dmp

memory/2944-16-0x0000000002380000-0x00000000023BC000-memory.dmp

memory/2944-15-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2944-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\H9MX5QVK\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2944-29-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2944-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2944-35-0x0000000000400000-0x00000000005FE000-memory.dmp