Malware Analysis Report

2025-08-10 22:03

Sample ID 240518-tca45sbb3x
Target VRThook Spoofer.exe
SHA256 9ddd4b094446a4932e71a3307c2a5210c8cb53be65d006840503c285d571e123
Tags
agenttesla keylogger persistence spyware stealer trojan
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

9ddd4b094446a4932e71a3307c2a5210c8cb53be65d006840503c285d571e123

Threat Level: Known bad

The file VRThook Spoofer.exe was found to be: Known bad.

Malicious Activity Summary

agenttesla keylogger persistence spyware stealer trojan

AgentTesla

AgentTesla payload

Downloads MZ/PE file

Sets service image path in registry

Checks computer location settings

Executes dropped EXE

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Enumerates system info in registry

Suspicious behavior: LoadsDriver

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-18 15:54

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-18 15:54

Reported

2024-05-18 15:55

Platform

win10v2004-20240508-en

Max time kernel

66s

Max time network

72s

Command Line

"C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

AgentTesla payload

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

Downloads MZ/PE file

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\cszChebCbH\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\cszChebCbH" C:\Windows\mapper.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A

Executes dropped EXE

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mapper.exe C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
File created C:\Windows\driver.sys C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A

Enumerates physical storage devices

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\mapper.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5112 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe C:\Windows\SysWOW64\cmd.exe
PID 5112 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe C:\Windows\SysWOW64\cmd.exe
PID 5112 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 3340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\mapper.exe
PID 2416 wrote to memory of 3340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\mapper.exe

Processes

C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe

"C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c C:\Windows\mapper.exe C:\Windows\driver.sys

C:\Windows\mapper.exe

C:\Windows\mapper.exe C:\Windows\driver.sys

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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 keyauth.win udp
US 104.26.0.5:443 keyauth.win tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 5.0.26.104.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tazzontop.cdn.zerocdn.com udp
RU 176.58.48.48:443 tazzontop.cdn.zerocdn.com tcp
US 8.8.8.8:53 tazzontop.tornado.zerocdn.com udp
RU 176.58.38.67:443 tazzontop.tornado.zerocdn.com tcp
US 8.8.8.8:53 48.48.58.176.in-addr.arpa udp
US 8.8.8.8:53 tazzontop.nailium.zerocdn.com udp
RU 176.58.39.107:443 tazzontop.nailium.zerocdn.com tcp
US 8.8.8.8:53 67.38.58.176.in-addr.arpa udp
US 8.8.8.8:53 107.39.58.176.in-addr.arpa udp
US 8.8.8.8:53 45.89.16.2.in-addr.arpa udp

Files

memory/5112-0-0x000000007495E000-0x000000007495F000-memory.dmp

memory/5112-1-0x0000000000300000-0x0000000000A1E000-memory.dmp

memory/5112-2-0x0000000005AE0000-0x0000000006084000-memory.dmp

memory/5112-3-0x0000000005530000-0x00000000055C2000-memory.dmp

memory/5112-4-0x00000000053A0000-0x00000000053B2000-memory.dmp

memory/5112-5-0x0000000005440000-0x000000000544A000-memory.dmp

memory/5112-6-0x0000000074950000-0x0000000075100000-memory.dmp

memory/5112-7-0x00000000056C0000-0x00000000057DA000-memory.dmp

memory/5112-8-0x00000000057E0000-0x0000000005846000-memory.dmp

memory/5112-9-0x0000000006090000-0x00000000062A4000-memory.dmp

memory/5112-10-0x00000000074D0000-0x000000000756C000-memory.dmp

memory/5112-11-0x0000000074950000-0x0000000075100000-memory.dmp

memory/5112-13-0x0000000009400000-0x000000000943C000-memory.dmp

memory/5112-14-0x000000007495E000-0x000000007495F000-memory.dmp

memory/5112-15-0x0000000074950000-0x0000000075100000-memory.dmp

memory/5112-17-0x0000000009E10000-0x0000000009E8C000-memory.dmp

C:\Windows\mapper.exe

MD5 00047e72bb99132267a4bec3158917a2
SHA1 caf72159dba3bf2af1e6f68cbcbbab7b981a4f0e
SHA256 e4f0fa3c70a4c20e7f79ac8e0c0c7b3e58e97a8e9d42274d51a54ebf9e8da5e4
SHA512 7f573d3a8a68a491c45009ce1beabc8280ccf50e10048b019146e28892c8bf3e90519721682dec5a53aa2c623af952c9957da3cf5338cded801fc7dedce99dc5

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-18 15:54

Reported

2024-05-18 15:57

Platform

win11-20240508-en

Max time kernel

92s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

AgentTesla payload

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

Delays execution with timeout.exe

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

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe

"C:\Users\Admin\AppData\Local\Temp\VRThook Spoofer.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd.exe" /c start cmd /C "color b && title Error && echo Signature checksum failed. Request was tampered with or session ended most likely. & echo: & echo Response: {"success":false,"message":"Session not found. Use latest code. You can only have app opened 1 at a time."} && timeout /t 5"

C:\Windows\SysWOW64\cmd.exe

cmd /C "color b && title Error && echo Signature checksum failed. Request was tampered with or session ended most likely. & echo: & echo Response: {"success":false,"message":"Session not found. Use latest code. You can only have app opened 1 at a time."} && timeout /t 5"

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
US 8.8.8.8:53 keyauth.win udp
US 104.26.0.5:443 keyauth.win tcp
US 8.8.8.8:53 5.0.26.104.in-addr.arpa udp

Files

memory/4852-0-0x000000007466E000-0x000000007466F000-memory.dmp

memory/4852-1-0x0000000000C10000-0x000000000132E000-memory.dmp

memory/4852-2-0x0000000006300000-0x00000000068A6000-memory.dmp

memory/4852-4-0x0000000005D90000-0x0000000005DA2000-memory.dmp

memory/4852-3-0x0000000005E30000-0x0000000005EC2000-memory.dmp

memory/4852-5-0x0000000005E10000-0x0000000005E1A000-memory.dmp

memory/4852-6-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/4852-7-0x0000000006060000-0x000000000617A000-memory.dmp

memory/4852-8-0x0000000006190000-0x00000000061F6000-memory.dmp

memory/4852-9-0x00000000069B0000-0x0000000006BC4000-memory.dmp

memory/4852-10-0x0000000007EA0000-0x0000000007F3C000-memory.dmp

memory/4852-11-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/4852-13-0x000000000A1B0000-0x000000000A1EC000-memory.dmp

memory/4852-14-0x000000007466E000-0x000000007466F000-memory.dmp

memory/4852-15-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/4852-16-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/4852-19-0x0000000074660000-0x0000000074E11000-memory.dmp