Malware Analysis Report

2025-01-02 09:44

Sample ID 240905-k2ygasxhkc
Target dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5
SHA256 dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5
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

dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5

Threat Level: Known bad

The file dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-05 09:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-05 09:06

Reported

2024-09-05 09:09

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe

"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 980

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1392

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2312 -ip 2312

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1256

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
RU 80.66.75.114:80 80.66.75.114 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 114.75.66.80.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.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 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 102.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2312-1-0x0000000000710000-0x0000000000810000-memory.dmp

memory/2312-2-0x00000000006C0000-0x00000000006ED000-memory.dmp

memory/2312-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2312-8-0x0000000000710000-0x0000000000810000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3HDB1LPD\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2312-11-0x00000000006C0000-0x00000000006ED000-memory.dmp

memory/2312-10-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/2312-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2312-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2312-21-0x0000000000400000-0x00000000005F8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-05 09:06

Reported

2024-09-05 09:09

Platform

win11-20240802-en

Max time kernel

146s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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:\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\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe

"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 832

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 872

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 960

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3420 -ip 3420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1384

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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/3420-1-0x0000000000830000-0x0000000000930000-memory.dmp

memory/3420-2-0x0000000002310000-0x000000000233D000-memory.dmp

memory/3420-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3420-8-0x0000000000830000-0x0000000000930000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\MF0NALEG\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3420-10-0x0000000002310000-0x000000000233D000-memory.dmp

memory/3420-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3420-11-0x0000000000400000-0x00000000005F8000-memory.dmp

memory/3420-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3420-21-0x0000000000400000-0x00000000005F8000-memory.dmp