Malware Analysis Report

2024-11-30 22:19

Sample ID 241121-ykp1gsznhj
Target 656cb950e3811873a4659d8057e39a78d9eb44df652b691ebc027f2cf7a325f5
SHA256 656cb950e3811873a4659d8057e39a78d9eb44df652b691ebc027f2cf7a325f5
Tags
xloader cvrn 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

656cb950e3811873a4659d8057e39a78d9eb44df652b691ebc027f2cf7a325f5

Threat Level: Known bad

The file 656cb950e3811873a4659d8057e39a78d9eb44df652b691ebc027f2cf7a325f5 was found to be: Known bad.

Malicious Activity Summary

xloader cvrn discovery loader rat

Xloader family

Xloader payload

Xloader

Xloader payload

Deletes itself

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 19:50

Signatures

Xloader family

xloader

Xloader payload

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3396 set thread context of 3592 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\Explorer.EXE
PID 3064 set thread context of 3592 N/A C:\Windows\SysWOW64\mstsc.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\bin.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mstsc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bin.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A
N/A N/A C:\Windows\SysWOW64\mstsc.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3592 wrote to memory of 3064 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 3592 wrote to memory of 3064 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 3592 wrote to memory of 3064 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 3064 wrote to memory of 2076 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe
PID 3064 wrote to memory of 2076 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe
PID 3064 wrote to memory of 2076 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\bin.exe

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

C:\Windows\SysWOW64\mstsc.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.guktree.com udp
US 8.8.8.8:53 www.bhartiyabrand.com udp
US 8.8.8.8:53 www.jamiewaack.com udp
US 8.8.8.8:53 www.chabakaton.com udp
US 8.8.8.8:53 www.mikeg.productions udp
US 8.8.8.8:53 www.saniyahair.com udp
US 8.8.8.8:53 www.phomepee.com udp
US 8.8.8.8:53 www.htwengenharia.com udp
US 216.239.32.21:80 www.htwengenharia.com tcp
US 8.8.8.8:53 21.32.239.216.in-addr.arpa udp
US 8.8.8.8:53 www.yiangosa.com udp
US 8.8.8.8:53 www.sjj-1688.com udp
HK 45.199.18.24:80 www.sjj-1688.com tcp
US 8.8.8.8:53 96.36.72.23.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 www.escortbd.com udp
US 103.224.212.215:80 www.escortbd.com tcp
US 8.8.8.8:53 215.212.224.103.in-addr.arpa udp
US 8.8.8.8:53 www.shoppinkksugar.com udp
US 8.8.8.8:53 www.theseventhgateway.com udp
US 15.197.148.33:80 www.theseventhgateway.com tcp
US 8.8.8.8:53 33.148.197.15.in-addr.arpa udp
US 8.8.8.8:53 www.castroarchitects.com udp
US 8.8.8.8:53 www.viruslow.com udp
DE 91.195.240.19:80 www.viruslow.com tcp
US 8.8.8.8:53 19.240.195.91.in-addr.arpa udp
US 8.8.8.8:53 www.guktree.com udp
US 8.8.8.8:53 www.bhartiyabrand.com udp
US 8.8.8.8:53 www.jamiewaack.com udp
US 8.8.8.8:53 www.chabakaton.com udp
US 8.8.8.8:53 www.mikeg.productions udp

Files

memory/3396-0-0x0000000000C90000-0x0000000000FDA000-memory.dmp

memory/3396-2-0x0000000000AB0000-0x0000000000AD8000-memory.dmp

memory/3396-1-0x0000000000ACD000-0x0000000000ACE000-memory.dmp

memory/3592-3-0x0000000007B70000-0x0000000007C7D000-memory.dmp

memory/3064-4-0x0000000000150000-0x000000000028A000-memory.dmp

memory/3064-6-0x0000000000150000-0x000000000028A000-memory.dmp

memory/3064-7-0x0000000000390000-0x00000000003B8000-memory.dmp

memory/3592-8-0x0000000007B70000-0x0000000007C7D000-memory.dmp

memory/3592-12-0x0000000007C80000-0x0000000007D6C000-memory.dmp

memory/3592-13-0x0000000007C80000-0x0000000007D6C000-memory.dmp

memory/3592-15-0x0000000007C80000-0x0000000007D6C000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win7-20241010-en

Max time kernel

146s

Max time network

125s

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 2884 set thread context of 1188 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\Explorer.EXE
PID 2884 set thread context of 1188 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\Explorer.EXE
PID 2784 set thread context of 1188 N/A C:\Windows\SysWOW64\cmd.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\bin.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\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\SysWOW64\cmd.exe
PID 2884 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\SysWOW64\cmd.exe
PID 2884 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\SysWOW64\cmd.exe
PID 2884 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\bin.exe C:\Windows\SysWOW64\cmd.exe
PID 2784 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2784 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2784 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2784 wrote to memory of 3064 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\bin.exe

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

C:\Windows\SysWOW64\autoconv.exe

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

C:\Windows\SysWOW64\cmd.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/2884-0-0x0000000000780000-0x0000000000A83000-memory.dmp

memory/2884-1-0x0000000000F8D000-0x0000000000F8E000-memory.dmp

memory/2884-2-0x0000000000F70000-0x0000000000F98000-memory.dmp

memory/1188-3-0x00000000037B0000-0x00000000038B0000-memory.dmp

memory/1188-4-0x0000000007200000-0x0000000007334000-memory.dmp

memory/2884-5-0x0000000000F8D000-0x0000000000F8E000-memory.dmp

memory/2884-6-0x0000000000F70000-0x0000000000F98000-memory.dmp

memory/1188-7-0x0000000007200000-0x0000000007334000-memory.dmp

memory/1188-8-0x0000000007340000-0x0000000007495000-memory.dmp

memory/2784-10-0x000000004A7E0000-0x000000004A82C000-memory.dmp

memory/2784-9-0x000000004A7E0000-0x000000004A82C000-memory.dmp

memory/1188-11-0x0000000007340000-0x0000000007495000-memory.dmp

memory/2784-12-0x0000000000080000-0x00000000000A8000-memory.dmp