Malware Analysis Report

2025-01-02 09:45

Sample ID 240904-qwjnva1ckr
Target 2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954
SHA256 2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954
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

2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954

Threat Level: Known bad

The file 2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Checks computer location settings

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 13:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 13:36

Reported

2024-09-04 13:39

Platform

win7-20240903-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.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\taskkill.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe

"C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2272-1-0x0000000000230000-0x0000000000330000-memory.dmp

memory/2272-2-0x00000000003B0000-0x00000000003DD000-memory.dmp

memory/2272-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2272-7-0x0000000000230000-0x0000000000330000-memory.dmp

memory/2272-9-0x00000000003B0000-0x00000000003DD000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\NQU8S4LJ\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2272-11-0x0000000000400000-0x0000000000445000-memory.dmp

memory/2272-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2272-21-0x0000000000400000-0x0000000000445000-memory.dmp

memory/2272-23-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2272-22-0x0000000000230000-0x0000000000330000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 13:36

Reported

2024-09-04 13:39

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.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\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.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\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe

"C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5104 -ip 5104

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "2ffc2ee25338b8be01f8761ad701687dc7341b24cfbb8ac632d977d57aee2954.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5104 -s 1260

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/5104-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/5104-2-0x0000000002190000-0x00000000021BD000-memory.dmp

memory/5104-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYI0S376\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/5104-9-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/5104-10-0x0000000000400000-0x0000000000445000-memory.dmp

memory/5104-11-0x0000000002190000-0x00000000021BD000-memory.dmp

memory/5104-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/5104-21-0x0000000000400000-0x0000000000445000-memory.dmp

memory/5104-22-0x0000000000400000-0x000000000042F000-memory.dmp