Malware Analysis Report

2025-01-02 09:42

Sample ID 240902-kzn5vaxfpc
Target d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e
SHA256 d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e
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

d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e

Threat Level: Known bad

The file d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Checks computer location settings

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Program crash

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-02 09:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 09:02

Reported

2024-09-02 09:05

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.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\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.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\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe

"C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2332 -ip 2332

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 1620

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
RU 80.66.75.114:80 80.66.75.114 tcp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2332-1-0x0000000000520000-0x0000000000620000-memory.dmp

memory/2332-2-0x0000000002090000-0x00000000020CC000-memory.dmp

memory/2332-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2332-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2332-13-0x0000000000520000-0x0000000000620000-memory.dmp

memory/2332-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2332-16-0x0000000002090000-0x00000000020CC000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2332-18-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2332-29-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2332-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2332-35-0x0000000000400000-0x0000000000453000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 09:02

Reported

2024-09-02 09:05

Platform

win11-20240802-en

Max time kernel

33s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.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\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.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\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe

"C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3140 -ip 3140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 1760

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

Files

memory/3140-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3140-2-0x00000000022E0000-0x000000000231C000-memory.dmp

memory/3140-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3140-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/3140-13-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3140-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3140-16-0x00000000022E0000-0x000000000231C000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JL3S1NU9\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3140-18-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3140-35-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3140-36-0x0000000000400000-0x000000000043F000-memory.dmp