Malware Analysis Report

2025-01-02 09:37

Sample ID 240505-2fcq5sfh6y
Target 3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f
SHA256 3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f
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

3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f

Threat Level: Known bad

The file 3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-05 22:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-05 22:31

Reported

2024-05-05 22:36

Platform

win7-20240221-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 3008 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 1796 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 1796 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 1796 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 1796 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 2568 wrote to memory of 2636 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2568 wrote to memory of 2636 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2568 wrote to memory of 2636 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2568 wrote to memory of 2636 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe"

C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe" /f

Network

Country Destination Domain Proto
DE 185.172.128.90:80 185.172.128.90 tcp

Files

memory/1796-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/3008-6-0x0000000000220000-0x000000000024E000-memory.dmp

memory/1796-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3008-4-0x0000000002C30000-0x0000000002D30000-memory.dmp

memory/1796-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1796-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1796-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3008-13-0x0000000002C30000-0x0000000002D30000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-05 22:31

Reported

2024-05-05 22:36

Platform

win10-20240404-en

Max time kernel

195s

Max time network

255s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 2912 wrote to memory of 1764 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe
PID 1764 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 1764 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 1764 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe C:\Windows\SysWOW64\cmd.exe
PID 4528 wrote to memory of 1388 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 4528 wrote to memory of 1388 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 4528 wrote to memory of 1388 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe"

C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe

"C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "3f18dfe962d9a1e4e746283212ccb0e1d8a463df4343fb0d29648af348c4ea5f.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 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 90.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp

Files

memory/1764-1-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1764-2-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2912-4-0x0000000002B90000-0x0000000002BBE000-memory.dmp

memory/1764-6-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2912-5-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/1764-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1764-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2912-10-0x0000000002C50000-0x0000000002D50000-memory.dmp