Malware Analysis Report

2025-01-02 09:44

Sample ID 240905-2jzp3sscpk
Target 4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc
SHA256 4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc
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

4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc

Threat Level: Known bad

The file 4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-05 22:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-05 22:37

Reported

2024-09-05 22:42

Platform

win7-20240903-en

Max time kernel

117s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.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\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.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\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe

"C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2996-1-0x0000000000520000-0x0000000000620000-memory.dmp

memory/2996-2-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2996-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZOGPI1N2\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2996-9-0x0000000000520000-0x0000000000620000-memory.dmp

memory/2996-11-0x0000000000220000-0x000000000024D000-memory.dmp

memory/2996-12-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2996-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2996-23-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2996-22-0x0000000000520000-0x0000000000620000-memory.dmp

memory/2996-21-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-05 22:37

Reported

2024-09-05 22:42

Platform

win10-20240404-en

Max time kernel

195s

Max time network

256s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.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:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.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\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe

"C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "4cbe05e05abdc4e781d990fe7addeae545ee9b598ea5620a8b2f8de4a2d1e3dc.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 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp

Files

memory/1340-2-0x0000000002080000-0x00000000020AD000-memory.dmp

memory/1340-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/1340-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\XCFODRP5\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1340-9-0x00000000006E0000-0x00000000007E0000-memory.dmp

memory/1340-11-0x0000000002080000-0x00000000020AD000-memory.dmp

memory/1340-12-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1340-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1340-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1340-22-0x0000000000400000-0x000000000042F000-memory.dmp