Malware Analysis Report

2025-01-02 09:37

Sample ID 240506-gemvhabc2x
Target c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5
SHA256 c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5
Tags
gcleaner 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

c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5

Threat Level: Known bad

The file c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5 was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Deletes itself

Enumerates physical storage devices

Program crash

Unsigned PE

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-06 05:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-06 05:43

Reported

2024-05-06 05:48

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.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

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\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe

"C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp

Files

memory/2960-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2960-2-0x00000000002B0000-0x00000000002DD000-memory.dmp

memory/2960-1-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

memory/2960-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2960-6-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

memory/2960-5-0x0000000000400000-0x0000000001A22000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-06 05:43

Reported

2024-05-06 05:48

Platform

win10-20240404-en

Max time kernel

211s

Max time network

299s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe"

Signatures

GCleaner

loader gcleaner

Enumerates physical storage devices

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\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe

"C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 916

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 1016

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 1112

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 1136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 1256

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "c887550a97d682bafb4bfafd001468e269a29a7c12e662e151649831b69bdbd5.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp
US 8.8.8.8:53 90.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp

Files

memory/2428-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2428-2-0x0000000003630000-0x000000000365D000-memory.dmp

memory/2428-1-0x0000000001A80000-0x0000000001B80000-memory.dmp

memory/2428-6-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2428-5-0x0000000000400000-0x0000000001A22000-memory.dmp