Malware Analysis Report

2025-01-02 09:46

Sample ID 240902-mhqy8ayakn
Target def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540
SHA256 def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540
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

def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540

Threat Level: Known bad

The file def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Checks computer location settings

Deletes itself

Program crash

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-02 10:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 10:28

Reported

2024-09-02 10:30

Platform

win7-20240704-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe"

Signatures

GCleaner

loader gcleaner

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\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\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.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\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe

"C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2728-1-0x0000000000560000-0x0000000000660000-memory.dmp

memory/2728-2-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2728-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4UQ4J2DQ\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2728-9-0x0000000000560000-0x0000000000660000-memory.dmp

memory/2728-11-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2728-12-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2728-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2728-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2728-23-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2728-22-0x0000000000560000-0x0000000000660000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 10:28

Reported

2024-09-02 10:30

Platform

win10v2004-20240802-en

Max time kernel

84s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe"

Signatures

GCleaner

loader gcleaner

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\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.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\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.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\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe

"C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "def4d4784c21e82d12c9f66b192d3a809f1aa4c03f0120a169e20989e069f540.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2264 -ip 2264

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 1304

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/2264-1-0x0000000000680000-0x0000000000780000-memory.dmp

memory/2264-2-0x00000000005C0000-0x00000000005ED000-memory.dmp

memory/2264-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VNN58CU3\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2264-9-0x0000000000680000-0x0000000000780000-memory.dmp

memory/2264-10-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2264-12-0x00000000005C0000-0x00000000005ED000-memory.dmp

memory/2264-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2264-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2264-22-0x0000000000400000-0x000000000042F000-memory.dmp