Malware Analysis Report

2025-01-02 09:39

Sample ID 240901-ntal2szbqj
Target U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q
SHA256 da5de27c10c56815fe36a1eb04ece4516dbf7b00fab7eacd3e5b6ee1d0adbaf0
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

da5de27c10c56815fe36a1eb04ece4516dbf7b00fab7eacd3e5b6ee1d0adbaf0

Threat Level: Known bad

The file U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Deletes itself

Checks computer location settings

Loads dropped DLL

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 11:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 11:40

Reported

2024-09-01 11:43

Platform

win7-20240729-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe

"C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/304-1-0x0000000000760000-0x0000000000860000-memory.dmp

memory/304-3-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/304-2-0x0000000000400000-0x000000000043F000-memory.dmp

memory/304-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/304-13-0x0000000000760000-0x0000000000860000-memory.dmp

memory/304-14-0x0000000000400000-0x000000000043F000-memory.dmp

memory/304-16-0x0000000000400000-0x00000000005F7000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\LW44N8OS\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/304-28-0x0000000000400000-0x00000000005F7000-memory.dmp

\Users\Admin\AppData\Local\Temp\8KvuKghoR31lg7Y1V2XO7CP1W3SGU\Y-Cleaner.exe

MD5 a8cf5621811f7fac55cfe8cb3fa6b9f6
SHA1 121356839e8138a03141f5f5856936a85bd2a474
SHA256 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c
SHA512 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

memory/304-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/304-37-0x0000000000760000-0x0000000000860000-memory.dmp

memory/304-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 11:40

Reported

2024-09-01 11:43

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

107s

Command Line

"C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe

"C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 440

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 784

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 800

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 1336

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1320 -ip 1320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 492

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "U41EHY0L51DESQ5S1T59P902Q059L4R7S7WCJSB9DRAAAUQS2Q.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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
GB 88.221.134.2:443 www.bing.com tcp
US 8.8.8.8:53 2.134.221.88.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1320-2-0x0000000000740000-0x000000000077C000-memory.dmp

memory/1320-1-0x0000000000890000-0x0000000000990000-memory.dmp

memory/1320-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1320-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/1320-13-0x0000000000890000-0x0000000000990000-memory.dmp

memory/1320-16-0x0000000000740000-0x000000000077C000-memory.dmp

memory/1320-15-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/1320-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\OD2FK6XO\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1320-29-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/1320-35-0x0000000000400000-0x00000000005F7000-memory.dmp

memory/1320-36-0x0000000000400000-0x000000000043F000-memory.dmp