Malware Analysis Report

2025-01-02 09:44

Sample ID 240904-thw9kavcnb
Target 58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151
SHA256 58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151
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

58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151

Threat Level: Known bad

The file 58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 16:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 16:04

Reported

2024-09-04 16:06

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.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:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.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\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe

"C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2068-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

memory/2068-2-0x00000000002E0000-0x000000000030D000-memory.dmp

memory/2068-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9UR26M8S\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2068-9-0x00000000004D0000-0x00000000005D0000-memory.dmp

memory/2068-11-0x00000000002E0000-0x000000000030D000-memory.dmp

memory/2068-12-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2068-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2068-21-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2068-23-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2068-22-0x00000000004D0000-0x00000000005D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 16:04

Reported

2024-09-04 16:06

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.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\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe

"C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 732

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 808

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 832

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1120

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4336,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=1904 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1384

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2144 -ip 2144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1436

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "58a8715a6652319788b334021b474a93c1595b3ea8ad411b881c5e84402bc151.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.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 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp

Files

memory/2144-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

memory/2144-2-0x0000000002190000-0x00000000021BD000-memory.dmp

memory/2144-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2144-8-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2144-9-0x00000000004E0000-0x00000000005E0000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2144-11-0x0000000002190000-0x00000000021BD000-memory.dmp

memory/2144-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2144-21-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2144-22-0x0000000000400000-0x000000000042F000-memory.dmp