Malware Analysis Report

2024-11-15 08:40

Sample ID 220718-xqqnjafacl
Target 50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307
SHA256 50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307
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

50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307

Threat Level: Known bad

The file 50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307 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

Modifies Internet Explorer Protected Mode

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Modifies Internet Explorer settings

Suspicious behavior: MapViewOfSection

Modifies Internet Explorer Protected Mode Banner

Enumerates system info in registry

Suspicious behavior: RenamesItself

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-18 19:03

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-18 19:03

Reported

2022-07-18 20:51

Platform

win7-20220715-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Windows\system32\Dwm.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\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
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile 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 = "kgfupuvwb.exe" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\515aug337.exe C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\515aug337.exe\DisableExceptionChainValidation C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.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
Set value (str) \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Google Updater 2.03 = "C:\\ProgramData\\Google Updater 2.03\\515aug337.exe" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Updater 2.03 = "\"C:\\ProgramData\\Google Updater 2.03\\515aug337.exe\"" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce 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\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A

Checks processor information in registry

Description Indicator Process Target
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
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.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-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" C:\Windows\SysWOW64\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\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-1-5-21-3440072777-2118400376-1759599358-1000\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-1-5-21-3440072777-2118400376-1759599358-1000\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\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeCreateTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeMachineAccountPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeAssignPrimaryTokenPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.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 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 1204 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe C:\Windows\SysWOW64\explorer.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1168 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\system32\Dwm.exe
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE
PID 832 wrote to memory of 1228 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\system32\Dwm.exe

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

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe

"C:\Users\Admin\AppData\Local\Temp\50f1d4e05670ea629d4fc8d04525cfc2fdaaa2a8d185cd61d8f902bad9914307.exe"

C:\Windows\SysWOW64\explorer.exe

C:\Windows\SysWOW64\explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 update.microsoft.com udp
US 20.72.235.82:80 update.microsoft.com tcp
US 8.8.8.8:53 moscow66.online udp
US 8.8.8.8:53 moscow77.online udp
US 8.8.8.8:53 moscow88.online udp
US 8.8.8.8:53 moscow99.online udp
US 8.8.8.8:53 moscow00.online udp
US 8.8.8.8:53 moscow12.online udp

Files

memory/1204-54-0x0000000076231000-0x0000000076233000-memory.dmp

memory/1204-55-0x0000000001CD0000-0x0000000001CE0000-memory.dmp

memory/1204-56-0x0000000000400000-0x0000000000485000-memory.dmp

memory/1204-57-0x0000000002290000-0x00000000022F6000-memory.dmp

memory/1204-59-0x0000000002290000-0x00000000022F6000-memory.dmp

memory/1204-60-0x00000000020C0000-0x00000000020CD000-memory.dmp

memory/1204-61-0x0000000002750000-0x000000000275C000-memory.dmp

memory/832-62-0x0000000000000000-mapping.dmp

memory/832-64-0x0000000074731000-0x0000000074733000-memory.dmp

memory/832-65-0x0000000077850000-0x00000000779D0000-memory.dmp

memory/832-66-0x00000000004F0000-0x00000000005DA000-memory.dmp

memory/832-67-0x00000000004A0000-0x00000000004AC000-memory.dmp

memory/1204-68-0x0000000002290000-0x00000000022F6000-memory.dmp

memory/832-69-0x0000000077850000-0x00000000779D0000-memory.dmp

memory/832-70-0x00000000004F0000-0x00000000005DA000-memory.dmp

memory/1228-71-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Reported

0001-01-01 00:00

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

N/A

Files

N/A