Malware Analysis Report

2025-01-02 06:50

Sample ID 241123-e29xfavjgr
Target a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe
SHA256 a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66
Tags
gcleaner onlylogger 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

a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66

Threat Level: Known bad

The file a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe was found to be: Known bad.

Malicious Activity Summary

gcleaner onlylogger discovery loader

GCleaner

Onlylogger family

OnlyLogger

Gcleaner family

OnlyLogger payload

Checks computer location settings

Deletes itself

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-23 04:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-23 04:27

Reported

2024-11-23 04:29

Platform

win7-20241010-en

Max time kernel

14s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe"

Signatures

GCleaner

loader gcleaner

Gcleaner family

gcleaner

OnlyLogger

loader onlylogger

Onlylogger family

onlylogger

OnlyLogger payload

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

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\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.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\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe

"C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f

Network

N/A

Files

memory/1048-1-0x0000000000980000-0x0000000000A80000-memory.dmp

memory/1048-2-0x0000000000220000-0x0000000000269000-memory.dmp

memory/1048-3-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1048-6-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1048-5-0x0000000000220000-0x0000000000269000-memory.dmp

memory/1048-4-0x0000000000400000-0x000000000089C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-23 04:27

Reported

2024-11-23 04:29

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe"

Signatures

GCleaner

loader gcleaner

Gcleaner family

gcleaner

OnlyLogger

loader onlylogger

Onlylogger family

onlylogger

OnlyLogger payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.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\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.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\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe

"C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 724

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 784

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 880

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 784

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 784

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 968

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 880

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4068-1-0x0000000000BF0000-0x0000000000CF0000-memory.dmp

memory/4068-2-0x0000000000970000-0x00000000009B9000-memory.dmp

memory/4068-3-0x0000000000400000-0x000000000044C000-memory.dmp

memory/4068-4-0x0000000000400000-0x000000000089C000-memory.dmp

memory/4068-6-0x0000000000400000-0x000000000044C000-memory.dmp

memory/4068-5-0x0000000000970000-0x00000000009B9000-memory.dmp