Malware Analysis Report

2025-01-02 09:43

Sample ID 240903-sjy9wa1ene
Target e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163
SHA256 e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163
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

e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163

Threat Level: Known bad

The file e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Downloads MZ/PE file

Loads dropped DLL

Deletes itself

Checks computer location settings

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-03 15:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-03 15:09

Reported

2024-09-03 15:12

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

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\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.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\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe

"C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/2936-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

memory/2936-2-0x0000000000220000-0x000000000025C000-memory.dmp

memory/2936-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2936-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/2936-12-0x00000000006C0000-0x00000000007C0000-memory.dmp

memory/2936-14-0x0000000000220000-0x000000000025C000-memory.dmp

memory/2936-17-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2936-16-0x0000000000400000-0x00000000005FA000-memory.dmp

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

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/2936-29-0x0000000000400000-0x00000000005FA000-memory.dmp

\Users\Admin\AppData\Local\Temp\GV1NdonQV53pzLPUNLEW3io\Y-Cleaner.exe

MD5 a8cf5621811f7fac55cfe8cb3fa6b9f6
SHA1 121356839e8138a03141f5f5856936a85bd2a474
SHA256 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c
SHA512 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

memory/2936-37-0x00000000006C0000-0x00000000007C0000-memory.dmp

memory/2936-36-0x0000000000400000-0x00000000005FA000-memory.dmp

memory/2936-38-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-03 15:09

Reported

2024-09-03 15:12

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe"

Signatures

GCleaner

loader gcleaner

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.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\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.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\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe

"C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 1552

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1244 -ip 1244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 1672

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "e0c8ddc9e2f0d9cf61d5cff5815d5b83af1c7d9506051299dfffc7d94e0ac163.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1244-1-0x0000000000900000-0x0000000000A00000-memory.dmp

memory/1244-2-0x00000000008A0000-0x00000000008DC000-memory.dmp

memory/1244-3-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1244-8-0x0000000010000000-0x000000001001C000-memory.dmp

memory/1244-13-0x0000000000900000-0x0000000000A00000-memory.dmp

memory/1244-16-0x00000000008A0000-0x00000000008DC000-memory.dmp

memory/1244-15-0x0000000000400000-0x00000000005FA000-memory.dmp

memory/1244-17-0x0000000000400000-0x000000000043F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6809OHQ0\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1244-27-0x0000000000400000-0x00000000005FA000-memory.dmp

memory/1244-36-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1244-35-0x0000000000400000-0x00000000005FA000-memory.dmp