Malware Analysis Report

2024-11-13 16:24

Sample ID 221003-bbgw7abcdq
Target 92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9
SHA256 92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9
Tags
betabot backdoor botnet evasion persistence trojan
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9

Threat Level: Known bad

The file 92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9 was found to be: Known bad.

Malicious Activity Summary

betabot backdoor botnet evasion persistence trojan

BetaBot

Modifies firewall policy service

Sets file execution options in registry

Checks BIOS information in registry

Drops desktop.ini file(s)

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Program crash

Suspicious behavior: RenamesItself

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Modifies Internet Explorer Protected Mode

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer Protected Mode Banner

Modifies Internet Explorer settings

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-03 00:58

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-03 00:58

Reported

2022-10-03 05:56

Platform

win7-20220812-en

Max time kernel

147s

Max time network

143s

Command Line

C:\Windows\Explorer.EXE

Signatures

BetaBot

trojan backdoor botnet betabot

Modifies firewall policy service

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\PublicProfile\EnableFirewall = "0" C:\Windows\SysWOW64\explorer.exe N/A

Sets file execution options in registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\33ma1u9a1q.exe C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\33ma1u9a1q.exe\DisableExceptionChainValidation C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "aacnljwngf.exe" C:\Windows\SysWOW64\explorer.exe N/A

Checks BIOS information in registry

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

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\CreativeAudio = "C:\\ProgramData\\CreativeAudio\\33ma1u9a1q.exe" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\CreativeAudio = "\"C:\\ProgramData\\CreativeAudio\\33ma1u9a1q.exe\"" C:\Windows\SysWOW64\explorer.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\ProgramData\CreativeAudio\desktop.ini C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
File opened for modification C:\ProgramData\CreativeAudio\desktop.ini C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\explorer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\SysWOW64\explorer.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Windows\SysWOW64\explorer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Windows\SysWOW64\explorer.exe N/A

Modifies Internet Explorer Protected Mode

Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A

Modifies Internet Explorer Protected Mode Banner

Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1" C:\Windows\SysWOW64\explorer.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\explorer.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeCreateTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeMachineAccountPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeAssignPrimaryTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeCreateTokenPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeMachineAccountPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeAssignPrimaryTokenPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\explorer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 900 wrote to memory of 1472 N/A C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe C:\Windows\SysWOW64\explorer.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 1472 wrote to memory of 1192 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe

"C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe"

C:\Windows\SysWOW64\explorer.exe

C:\Windows\SysWOW64\explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 microsoft.com udp
US 20.112.52.29:80 microsoft.com tcp
US 8.8.8.8:53 b.uandmearertyasport1.com udp
US 8.8.8.8:53 b.uandmevrertyasport2com udp
US 8.8.8.8:53 b.stop2asrertyasport3.com udp
US 8.8.8.8:53 b.pixarzorertyasport4.com udp
US 8.8.8.8:53 b.dietmyrrertyasport5.com udp
US 8.8.8.8:53 b.worldiprertyasport6.com udp
US 8.8.8.8:53 b.thegtstrertyasport7.com udp
US 8.8.8.8:53 b.thegjurertyasport18.com udp
US 8.8.8.8:53 b.thegredddrtyasport9.com udp
US 8.8.8.8:53 b.thejurertyasport110.com udp

Files

memory/900-54-0x0000000075C61000-0x0000000075C63000-memory.dmp

memory/900-55-0x0000000000400000-0x000000000049F000-memory.dmp

memory/900-56-0x0000000000400000-0x000000000049F000-memory.dmp

memory/900-57-0x0000000000560000-0x00000000005C2000-memory.dmp

memory/900-58-0x0000000000330000-0x000000000033D000-memory.dmp

memory/900-59-0x0000000000560000-0x00000000005C2000-memory.dmp

memory/900-61-0x0000000000610000-0x000000000061C000-memory.dmp

memory/1472-62-0x0000000000000000-mapping.dmp

memory/1472-64-0x0000000075141000-0x0000000075143000-memory.dmp

memory/1472-65-0x0000000077D10000-0x0000000077E90000-memory.dmp

memory/900-66-0x0000000000560000-0x00000000005C2000-memory.dmp

memory/1472-67-0x0000000000130000-0x0000000000211000-memory.dmp

memory/1472-68-0x00000000003C0000-0x00000000003CC000-memory.dmp

memory/1472-69-0x0000000077D10000-0x0000000077E90000-memory.dmp

memory/1472-70-0x0000000000130000-0x0000000000211000-memory.dmp

memory/1192-71-0x0000000002A60000-0x0000000002A66000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-03 00:58

Reported

2022-10-03 05:57

Platform

win10v2004-20220812-en

Max time kernel

141s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe

"C:\Users\Admin\AppData\Local\Temp\92fa967b880035072db26c33f6d5f724c813c5fbc6436778577d43b69144c8f9.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 148 -p 3140 -ip 3140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 536

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 20.42.65.89:443 tcp
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp

Files

N/A