Malware Analysis Report

2025-01-02 09:44

Sample ID 240905-mf433azakg
Target e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95
SHA256 e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95
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

e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95

Threat Level: Known bad

The file e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Deletes itself

Loads dropped DLL

Unsigned PE

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-05 10:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-05 10:25

Reported

2024-09-05 10:27

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

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\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.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\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe

"C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/1480-1-0x0000000000270000-0x0000000000370000-memory.dmp

memory/1480-2-0x0000000000790000-0x00000000007CB000-memory.dmp

memory/1480-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1480-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/1480-12-0x0000000000270000-0x0000000000370000-memory.dmp

memory/1480-14-0x0000000000790000-0x00000000007CB000-memory.dmp

memory/1480-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1480-16-0x0000000000400000-0x00000000005F8000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1480-27-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/1480-30-0x0000000000400000-0x00000000005F8000-memory.dmp

\Users\Admin\AppData\Local\Temp\u99xw0tyJuY62WVBH4U\Y-Cleaner.exe

MD5 a8cf5621811f7fac55cfe8cb3fa6b9f6
SHA1 121356839e8138a03141f5f5856936a85bd2a474
SHA256 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c
SHA512 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

memory/1480-37-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/1480-38-0x0000000000270000-0x0000000000370000-memory.dmp

memory/1480-39-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-05 10:25

Reported

2024-09-05 10:27

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

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\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.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\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.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\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe

"C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 804

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=4248,i,15436195446242760253,4000484513008731869,262144 --variations-seed-version --mojo-platform-channel-handle=4208 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 892

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 932

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1648

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3412 -ip 3412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1664

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e0d6620f56005133a7252198c7a4780664b43c91d347097594825bbc7912ef95.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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/3412-1-0x0000000000830000-0x0000000000930000-memory.dmp

memory/3412-2-0x0000000000760000-0x000000000079B000-memory.dmp

memory/3412-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3412-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3412-13-0x0000000000830000-0x0000000000930000-memory.dmp

memory/3412-14-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/3412-16-0x0000000000760000-0x000000000079B000-memory.dmp

memory/3412-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0KP8BKDN\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3412-30-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/3412-37-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3412-36-0x0000000000400000-0x00000000005F8000-memory.dmp