Malware Analysis Report

2025-01-02 09:46

Sample ID 240829-2lta3swhrm
Target a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5
SHA256 a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5
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

a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5

Threat Level: Known bad

The file a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

System Location Discovery: System Language Discovery

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

2024-08-29 22:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 22:40

Reported

2024-08-29 22:45

Platform

win7-20240708-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.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\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.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\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe

"C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/1708-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

memory/1708-2-0x00000000002B0000-0x00000000002DD000-memory.dmp

memory/1708-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1708-6-0x00000000004D0000-0x00000000005D0000-memory.dmp

memory/1708-8-0x00000000002B0000-0x00000000002DD000-memory.dmp

memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1708-10-0x0000000000400000-0x000000000042F000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1708-21-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1708-22-0x00000000004D0000-0x00000000005D0000-memory.dmp

memory/1708-23-0x0000000000400000-0x000000000042F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 22:40

Reported

2024-08-29 22:45

Platform

win10-20240404-en

Max time kernel

195s

Max time network

286s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe"

Signatures

GCleaner

loader gcleaner

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\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.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\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe

"C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "a32394dc0a71de2c03070159cc4eb8dea29f19b7496398abd34cc79eadb867f5.exe" /f

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
US 52.111.227.14:443 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 2.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp

Files

memory/4744-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

memory/4744-2-0x0000000000790000-0x00000000007BD000-memory.dmp

memory/4744-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VSH5XF98\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4744-9-0x00000000004A0000-0x00000000005A0000-memory.dmp

memory/4744-11-0x0000000000400000-0x0000000000450000-memory.dmp

memory/4744-12-0x0000000000790000-0x00000000007BD000-memory.dmp

memory/4744-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4744-21-0x0000000000400000-0x0000000000450000-memory.dmp

memory/4744-22-0x0000000000400000-0x000000000042F000-memory.dmp