Malware Analysis Report

2025-01-02 09:46

Sample ID 240830-l4jllayckg
Target 11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57
SHA256 11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57
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

11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57

Threat Level: Known bad

The file 11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57 was found to be: Known bad.

Malicious Activity Summary

gcleaner discovery loader

GCleaner

Deletes itself

Checks computer location settings

System Location Discovery: System Language Discovery

Program crash

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

2024-08-30 10:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-30 10:05

Reported

2024-08-30 10:07

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.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\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.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\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe

"C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f

Network

Country Destination Domain Proto
RU 80.66.75.114:80 80.66.75.114 tcp

Files

memory/1152-1-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1152-2-0x00000000003A0000-0x00000000003CD000-memory.dmp

memory/1152-3-0x0000000000400000-0x000000000042F000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\2UK8J8K8\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/1152-9-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1152-11-0x00000000003A0000-0x00000000003CD000-memory.dmp

memory/1152-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1152-12-0x0000000000400000-0x00000000005F6000-memory.dmp

memory/1152-23-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1152-22-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1152-21-0x0000000000400000-0x00000000005F6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-30 10:05

Reported

2024-08-30 10:07

Platform

win10v2004-20240802-en

Max time kernel

136s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.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\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.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\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe

"C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 956

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 1408

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4560 -ip 4560

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 1248

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.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 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/4560-1-0x0000000000670000-0x0000000000770000-memory.dmp

memory/4560-2-0x0000000002340000-0x000000000236D000-memory.dmp

memory/4560-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4560-8-0x0000000000670000-0x0000000000770000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\2VX66VOV\download[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/4560-11-0x0000000002340000-0x000000000236D000-memory.dmp

memory/4560-10-0x0000000000400000-0x00000000005F6000-memory.dmp

memory/4560-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4560-22-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4560-21-0x0000000000400000-0x00000000005F6000-memory.dmp