Malware Analysis Report

2025-01-02 09:44

Sample ID 240905-m9e12azajn
Target 9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980
SHA256 9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980
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

9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980

Threat Level: Known bad

The file 9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Checks computer location settings

Program crash

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-05 11:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-05 11:09

Reported

2024-09-05 11:12

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe"

Signatures

GCleaner

loader gcleaner

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

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\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.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\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe

"C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2584-1-0x0000000000750000-0x0000000000850000-memory.dmp

memory/2584-2-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2584-3-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2584-6-0x0000000000750000-0x0000000000850000-memory.dmp

memory/2584-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2584-9-0x0000000000400000-0x00000000005FE000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ROLMKJ86\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2584-22-0x0000000000400000-0x00000000005FE000-memory.dmp

memory/2584-24-0x0000000000750000-0x0000000000850000-memory.dmp

memory/2584-23-0x0000000000400000-0x000000000042F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-05 11:09

Reported

2024-09-05 11:12

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.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\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.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\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.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\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe

"C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -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 416 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -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 524 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 916

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4116 -ip 4116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 1456

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" & exit

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 1312

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "9b45d116e32bbccf67f0179b0ed4be4c1ffb3bed792e37478a23f0afcf9d1980.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.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 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4116-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

memory/4116-2-0x0000000002350000-0x000000000237D000-memory.dmp

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

memory/4116-8-0x00000000006F0000-0x00000000007F0000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4116-11-0x0000000002350000-0x000000000237D000-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