Malware Analysis Report

2025-01-02 09:44

Sample ID 240904-b34v2atfqb
Target 9ccfc9b35faf4c02d6d8c4d6430f94bb.bin
SHA256 8bff160da4a076aa92a27a0da6eff5911acd3e1461f7b6cf274fb7a35c984af0
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

8bff160da4a076aa92a27a0da6eff5911acd3e1461f7b6cf274fb7a35c984af0

Threat Level: Known bad

The file 9ccfc9b35faf4c02d6d8c4d6430f94bb.bin 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 01:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 01:41

Reported

2024-09-04 01:43

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.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:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.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\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe

"C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/1072-1-0x0000000000250000-0x0000000000350000-memory.dmp

memory/1072-2-0x00000000003C0000-0x00000000003ED000-memory.dmp

memory/1072-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1072-7-0x0000000000250000-0x0000000000350000-memory.dmp

memory/1072-9-0x00000000003C0000-0x00000000003ED000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8452S9S3\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1072-11-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1072-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1072-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1072-22-0x0000000000250000-0x0000000000350000-memory.dmp

memory/1072-23-0x0000000000400000-0x000000000042F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 01:41

Reported

2024-09-04 01:43

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe"

Signatures

GCleaner

loader gcleaner

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\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.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\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.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\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe

"C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2436 -ip 2436

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "17755d80106436dddce6838115080879d71e018056ed2f72470ff8ddb7a48739.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 1572

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.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 8.8.8.8:53 114.75.66.80.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2436-1-0x0000000000660000-0x0000000000760000-memory.dmp

memory/2436-2-0x0000000000560000-0x000000000058D000-memory.dmp

memory/2436-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3GJVVK7B\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2436-9-0x0000000000660000-0x0000000000760000-memory.dmp

memory/2436-10-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2436-12-0x0000000000560000-0x000000000058D000-memory.dmp

memory/2436-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2436-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2436-22-0x0000000000400000-0x000000000042F000-memory.dmp