Malware Analysis Report

2024-11-30 22:19

Sample ID 241121-yk3xcazpaj
Target 431800406d960cd03cafa1d7b4cb9abdab41ff0685b2d31d24fa629a2a6dd6c2
SHA256 431800406d960cd03cafa1d7b4cb9abdab41ff0685b2d31d24fa629a2a6dd6c2
Tags
xloader d0ce discovery loader rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

431800406d960cd03cafa1d7b4cb9abdab41ff0685b2d31d24fa629a2a6dd6c2

Threat Level: Known bad

The file 431800406d960cd03cafa1d7b4cb9abdab41ff0685b2d31d24fa629a2a6dd6c2 was found to be: Known bad.

Malicious Activity Summary

xloader d0ce discovery loader rat

Xloader family

Xloader

Xloader payload

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: MapViewOfSection

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 19:51

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 19:51

Reported

2024-11-21 19:54

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

C:\Windows\Explorer.EXE

Signatures

Xloader

loader xloader

Xloader family

xloader

Xloader payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2196 set thread context of 4584 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 4584 set thread context of 3408 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Windows\Explorer.EXE
PID 844 set thread context of 3408 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\Explorer.EXE

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\CLOSING BALANCE_2021_11.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\chkdsk.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A
N/A N/A C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe

"C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe

"C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

C:\Windows\SysWOW64\chkdsk.exe

"C:\Windows\SysWOW64\chkdsk.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.atthewthornton.com udp
US 8.8.8.8:53 www.annikadaniel.love udp
US 8.8.8.8:53 www.68138.online udp
US 8.8.8.8:53 www.owes.website udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.sz-yuxiang.com udp
US 8.8.8.8:53 www.argentum.website udp
N/A 192.168.1.1:80 www.argentum.website tcp
US 8.8.8.8:53 www.argentum.website udp
N/A 192.168.1.1:80 www.argentum.website tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 www.maltesefalconwares.store udp
US 8.8.8.8:53 www.benefitcarolina.com udp
US 8.8.8.8:53 www.jerseymoissanite.com udp
US 8.8.8.8:53 www.globalingua.online udp
US 8.8.8.8:53 www.gold-spin.info udp
US 8.8.8.8:53 www.116finch.com udp
US 8.8.8.8:53 www.houstonafterparties.com udp
US 8.8.8.8:53 www.windowpax.com udp
US 8.8.8.8:53 www.shinawatrakam.website udp
US 8.8.8.8:53 www.houstonafterparties.com udp
US 8.8.8.8:53 udp

Files

memory/2196-0-0x0000000000420000-0x0000000000429000-memory.dmp

memory/4584-1-0x0000000000400000-0x0000000000429000-memory.dmp

memory/4584-2-0x0000000000400000-0x0000000000429000-memory.dmp

memory/3408-3-0x0000000004A40000-0x0000000004B1C000-memory.dmp

memory/844-5-0x0000000000760000-0x000000000076A000-memory.dmp

memory/844-6-0x0000000000760000-0x000000000076A000-memory.dmp

memory/844-7-0x0000000000D60000-0x0000000000D89000-memory.dmp

memory/3408-8-0x0000000004A40000-0x0000000004B1C000-memory.dmp

memory/3408-12-0x0000000007B20000-0x0000000007C6C000-memory.dmp

memory/3408-13-0x0000000007B20000-0x0000000007C6C000-memory.dmp

memory/3408-15-0x0000000007B20000-0x0000000007C6C000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 19:51

Reported

2024-11-21 19:54

Platform

win7-20240729-en

Max time kernel

145s

Max time network

123s

Command Line

C:\Windows\Explorer.EXE

Signatures

Xloader

loader xloader

Xloader family

xloader

Xloader payload

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

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1916 set thread context of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 3004 set thread context of 1208 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Windows\Explorer.EXE
PID 2396 set thread context of 1208 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\Explorer.EXE

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\CLOSING BALANCE_2021_11.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\chkdsk.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 1916 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 1916 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 1916 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 1916 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe
PID 1208 wrote to memory of 2396 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1208 wrote to memory of 2396 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1208 wrote to memory of 2396 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1208 wrote to memory of 2396 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 2396 wrote to memory of 2708 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2708 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2708 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2708 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe

"C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe

"C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

C:\Windows\SysWOW64\chkdsk.exe

"C:\Windows\SysWOW64\chkdsk.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\CLOSING BALANCE_2021_11.exe"

Network

N/A

Files

memory/1916-0-0x0000000000420000-0x0000000000429000-memory.dmp

memory/3004-1-0x0000000000400000-0x0000000000429000-memory.dmp

memory/3004-2-0x0000000000400000-0x0000000000429000-memory.dmp

memory/1208-3-0x0000000002F00000-0x0000000002FDB000-memory.dmp

memory/2396-6-0x0000000000390000-0x0000000000397000-memory.dmp

memory/2396-7-0x0000000000390000-0x0000000000397000-memory.dmp

memory/2396-8-0x00000000000D0000-0x00000000000F9000-memory.dmp

memory/1208-9-0x0000000002F00000-0x0000000002FDB000-memory.dmp