Malware Analysis Report

2025-01-02 09:40

Sample ID 240903-b89ngatejp
Target 5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885
SHA256 5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885
Tags
gcleaner discovery loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885

Threat Level: Known bad

The file 5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Checks computer location settings

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Program crash

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 01:50

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 01:50

Reported

2024-09-03 01:52

Platform

win11-20240802-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe"

Signatures

GCleaner

loader gcleaner

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\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.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\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe

"C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 892

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 1480

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 5244 -ip 5244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5244 -s 1348

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f

Network

Country Destination Domain Proto
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

Files

memory/5244-1-0x0000000000510000-0x0000000000610000-memory.dmp

memory/5244-2-0x00000000022C0000-0x00000000022ED000-memory.dmp

memory/5244-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/5244-8-0x0000000000510000-0x0000000000610000-memory.dmp

memory/5244-9-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\M3DUQV5R\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/5244-11-0x00000000022C0000-0x00000000022ED000-memory.dmp

memory/5244-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/5244-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/5244-22-0x0000000000400000-0x000000000042F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 01:50

Reported

2024-09-03 01:52

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.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\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.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\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe

"C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 912

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 1012

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 1440

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 560 -ip 560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 1548

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/560-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

memory/560-2-0x00000000005F0000-0x000000000061D000-memory.dmp

memory/560-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/560-8-0x00000000006A0000-0x00000000007A0000-memory.dmp

memory/560-9-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LI43KEDR\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/560-11-0x00000000005F0000-0x000000000061D000-memory.dmp

memory/560-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/560-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/560-22-0x0000000000400000-0x000000000042F000-memory.dmp