Malware Analysis Report

2024-11-13 16:24

Sample ID 221001-2ghnsaacc7
Target 83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483
SHA256 83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483
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

83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483

Threat Level: Known bad

The file 83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483 was found to be: Known bad.

Malicious Activity Summary

betabot backdoor botnet evasion persistence trojan

Modifies firewall policy service

BetaBot

Sets file execution options in registry

Checks BIOS information in registry

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Program crash

Modifies Internet Explorer settings

Enumerates system info in registry

Modifies Internet Explorer Protected Mode

Checks processor information in registry

Modifies Internet Explorer Protected Mode Banner

Suspicious behavior: MapViewOfSection

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-01 22:33

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-01 22:33

Reported

2022-10-02 00:41

Platform

win7-20220812-en

Max time kernel

150s

Max time network

193s

Command Line

C:\Windows\Explorer.EXE

Signatures

BetaBot

trojan backdoor botnet betabot

Modifies firewall policy service

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

Sets file execution options in registry

persistence
Description Indicator Process Target
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 = "dsdwb.exe" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\c71i7uks1.exe C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\c71i7uks1.exe\DisableExceptionChainValidation C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.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-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\CreativeAudio = "C:\\ProgramData\\CreativeAudio\\c71i7uks1.exe" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\CreativeAudio = "\"C:\\ProgramData\\CreativeAudio\\c71i7uks1.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\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.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\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\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-1-5-21-3845472200-3839195424-595303356-1000\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-1-5-21-3845472200-3839195424-595303356-1000\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\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeCreateTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeMachineAccountPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeAssignPrimaryTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.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 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 1480 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe C:\Windows\SysWOW64\explorer.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1312 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 2032 wrote to memory of 1380 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 2032 wrote to memory of 1380 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 2032 wrote to memory of 1380 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 2032 wrote to memory of 1380 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 2032 wrote to memory of 1380 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 2032 wrote to memory of 1380 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\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe

"C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.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

Files

memory/1480-54-0x0000000076831000-0x0000000076833000-memory.dmp

memory/1480-55-0x0000000000400000-0x000000000046B000-memory.dmp

memory/1480-56-0x0000000001EE0000-0x0000000001F42000-memory.dmp

memory/1480-60-0x00000000003D0000-0x00000000003DD000-memory.dmp

memory/1480-59-0x0000000001EE0000-0x0000000001F42000-memory.dmp

memory/1480-58-0x0000000000400000-0x000000000046B000-memory.dmp

memory/1480-61-0x00000000005F0000-0x00000000005FC000-memory.dmp

memory/1480-62-0x0000000001EE0000-0x0000000001F42000-memory.dmp

memory/2032-63-0x0000000000000000-mapping.dmp

memory/2032-65-0x0000000075261000-0x0000000075263000-memory.dmp

memory/2032-66-0x0000000077E40000-0x0000000077FC0000-memory.dmp

memory/1480-67-0x0000000001EE0000-0x0000000001F42000-memory.dmp

memory/2032-68-0x0000000000090000-0x000000000013D000-memory.dmp

memory/2032-69-0x0000000000290000-0x000000000029D000-memory.dmp

memory/2032-70-0x0000000001FC0000-0x0000000001FCC000-memory.dmp

memory/2032-71-0x0000000077E40000-0x0000000077FC0000-memory.dmp

memory/2032-72-0x0000000000090000-0x000000000013D000-memory.dmp

memory/1380-73-0x0000000002250000-0x0000000002256000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-01 22:33

Reported

2022-10-02 00:41

Platform

win10v2004-20220812-en

Max time kernel

156s

Max time network

195s

Command Line

"C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe

"C:\Users\Admin\AppData\Local\Temp\83d6f75a49f99eef7c428029e740cdb13c6010539600c2b49a84fde76b96c483.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4780 -ip 4780

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4780 -s 484

Network

Country Destination Domain Proto
US 8.8.8.8:53 f.7.6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.0.0.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 209.197.3.8:80 tcp
GB 51.132.193.104:443 tcp
NL 87.248.202.1:80 tcp
NL 87.248.202.1:80 tcp

Files

N/A