Malware Analysis Report

2025-01-02 09:44

Sample ID 240904-nwjbzayhqp
Target c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe
SHA256 c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92
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

c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92

Threat Level: Known bad

The file c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Checks computer location settings

Program crash

Unsigned PE

Enumerates physical storage devices

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

2024-09-04 11:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 11:44

Reported

2024-09-04 11:47

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.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:\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\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.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\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe

"C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2788-1-0x0000000000760000-0x0000000000860000-memory.dmp

memory/2788-2-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2788-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\01LB6K3J\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2788-9-0x0000000000760000-0x0000000000860000-memory.dmp

memory/2788-11-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2788-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2788-12-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2788-22-0x0000000000760000-0x0000000000860000-memory.dmp

memory/2788-21-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2788-23-0x0000000000400000-0x000000000042F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 11:44

Reported

2024-09-04 11:47

Platform

win10v2004-20240802-en

Max time kernel

92s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.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\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.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\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.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\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe

"C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 832

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 1120

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 1332

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 1296

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.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 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp

Files

memory/4116-1-0x0000000000610000-0x0000000000710000-memory.dmp

memory/4116-2-0x0000000002340000-0x000000000236D000-memory.dmp

memory/4116-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4116-8-0x0000000000610000-0x0000000000710000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4116-11-0x0000000002340000-0x000000000236D000-memory.dmp

memory/4116-10-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/4116-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4116-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4116-21-0x0000000000400000-0x00000000005FE000-memory.dmp