Malware Analysis Report

2025-08-06 03:39

Sample ID 230702-f7zjbsag42
Target RejSpacer72.exe
SHA256 cb6f91dc0ef15705a4449ece2ee7324c9e24a75dbf852651d095179dcaf2739b
Tags
gcleaner loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cb6f91dc0ef15705a4449ece2ee7324c9e24a75dbf852651d095179dcaf2739b

Threat Level: Known bad

The file RejSpacer72.exe was found to be: Known bad.

Malicious Activity Summary

gcleaner loader

GCleaner

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-02 05:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-02 05:31

Reported

2023-07-02 05:32

Platform

win10v2004-20230621-en

Max time kernel

40s

Max time network

44s

Command Line

"C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe"

Signatures

GCleaner

loader gcleaner

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4025927695-1301755775-2607443251-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe N/A

Enumerates physical storage devices

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\RejSpacer72.exe

"C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe"

C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "RejSpacer72.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "RejSpacer72.exe" /f

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
NL 45.12.253.56:80 45.12.253.56 tcp
NL 45.12.253.72:80 45.12.253.72 tcp
NL 45.12.253.75:80 45.12.253.75 tcp
US 8.8.8.8:53 56.253.12.45.in-addr.arpa udp
US 8.8.8.8:53 72.253.12.45.in-addr.arpa udp
US 8.8.8.8:53 75.253.12.45.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 13.89.179.10:443 tcp

Files

memory/3560-133-0x0000000000400000-0x0000000001318000-memory.dmp

memory/3560-134-0x0000000000400000-0x0000000001318000-memory.dmp

C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/3560-142-0x0000000010000000-0x000000001001B000-memory.dmp

memory/3560-147-0x0000000000400000-0x0000000001318000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G63C5RNT\dll[1].htm

MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

memory/3560-159-0x0000000000400000-0x0000000001318000-memory.dmp