Malware Analysis Report

2025-01-02 09:44

Sample ID 240904-awcyas1dpl
Target 8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d
SHA256 8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d
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

8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d

Threat Level: Known bad

The file 8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 00:33

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 00:33

Reported

2024-09-04 00:35

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.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\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.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\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe

"C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 472

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 756

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 1000

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 1560

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 532

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/4140-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

memory/4140-2-0x00000000007A0000-0x00000000007DB000-memory.dmp

memory/4140-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/4140-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/4140-13-0x00000000007E0000-0x00000000008E0000-memory.dmp

memory/4140-16-0x00000000007A0000-0x00000000007DB000-memory.dmp

memory/4140-15-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4140-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\H9MX5QVK\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4140-29-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4140-35-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4140-36-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 00:33

Reported

2024-09-04 00:35

Platform

win11-20240802-en

Max time kernel

92s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

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\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.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\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe

"C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 840

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 852

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 1084

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 1756

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1072 -ip 1072

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 1448

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "8c55d689dfdff3c0e87ace5baaf075a3f80c7ecb61d658d345e949f9a28efd6d.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
US 52.111.227.13:443 tcp

Files

memory/1072-1-0x00000000008E0000-0x00000000009E0000-memory.dmp

memory/1072-2-0x00000000008A0000-0x00000000008DB000-memory.dmp

memory/1072-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1072-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/1072-13-0x00000000008E0000-0x00000000009E0000-memory.dmp

memory/1072-15-0x00000000008A0000-0x00000000008DB000-memory.dmp

memory/1072-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1072-16-0x0000000000400000-0x00000000005FE000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LQOABF8X\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1072-29-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/1072-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1072-35-0x0000000000400000-0x00000000005FE000-memory.dmp