agenttesla | 2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe = "0"	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

412 powershell.exe

pid	process
412	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe = "0"	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

24 api.ipify.org
25 api.ipify.org

flow	ioc
24	api.ipify.org
25	api.ipify.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	pid	process	target process
PID 2536 set thread context of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeCasPol.exe

pid process

412 powershell.exe
412 powershell.exe
556 CasPol.exe
556 CasPol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeCasPol.exe

description pid process

Token: SeDebugPrivilege 412 powershell.exe
Token: SeDebugPrivilege 556 CasPol.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

CasPol.exe

pid process

556 CasPol.exe

pid	process
412	powershell.exe
412	powershell.exe
556	CasPol.exe
556	CasPol.exe

description	pid	process
Token: SeDebugPrivilege	412	powershell.exe
Token: SeDebugPrivilege	556	CasPol.exe

pid	process
556	CasPol.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	pid	process	target process
PID 2536 wrote to memory of 412	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	powershell.exe
PID 2536 wrote to memory of 412	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	powershell.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe
PID 2536 wrote to memory of 556	2536	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe	CasPol.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe

C:\Users\Admin\AppData\Local\Temp\2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe
"C:\Users\Admin\AppData\Local\Temp\2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe"
1⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2536

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2bb40a42d7233c024c932d9f837e5781fd561e265406c788380896786b3c1608.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:412

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:556

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

3

Modify Registry

4

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

5

Virtualization/Sandbox Evasion

2

System Information Discovery

5

Peripheral Device Discovery