agenttesla | 12990362fcb5224dfa15ed3a0b2592f92f63e4b2436825f2dea2c337b7ea1154

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Processes:

Shipping_Document-Invoices.exe

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

Windows security bypass 2 TTPs 2 IoCs

Disabling Security Tools

Modify Registry

Processes:

Shipping_Document-Invoices.exe

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

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Shipping_Document-Invoices.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions Shipping_Document-Invoices.exe
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Shipping_Document-Invoices.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools Shipping_Document-Invoices.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Shipping_Document-Invoices.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	Shipping_Document-Invoices.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:

Shipping_Document-Invoices.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Shipping_Document-Invoices.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Shipping_Document-Invoices.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:

Shipping_Document-Invoices.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	Shipping_Document-Invoices.exe

Windows security modification 2 TTPs 3 IoCs

Disabling Security Tools

Modify Registry

Processes:

Shipping_Document-Invoices.exe

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

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

Processes:

Shipping_Document-Invoices.exe

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

98 api.ipify.org
99 api.ipify.org

flow	ioc
98	api.ipify.org
99	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:

Shipping_Document-Invoices.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Shipping_Document-Invoices.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Shipping_Document-Invoices.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Shipping_Document-Invoices.exe

description pid process target process

PID 2552 set thread context of 3956 2552 Shipping_Document-Invoices.exe CasPol.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeCasPol.exe

pid process

4968 powershell.exe
4968 powershell.exe
3956 CasPol.exe
3956 CasPol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeCasPol.exe

description pid process

Token: SeDebugPrivilege 4968 powershell.exe
Token: SeDebugPrivilege 3956 CasPol.exe

description	pid	process	target process
PID 2552 set thread context of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe

pid	process
4968	powershell.exe
4968	powershell.exe
3956	CasPol.exe
3956	CasPol.exe

description	pid	process
Token: SeDebugPrivilege	4968	powershell.exe
Token: SeDebugPrivilege	3956	CasPol.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Shipping_Document-Invoices.exe

description	pid	process	target process
PID 2552 wrote to memory of 4968	2552	Shipping_Document-Invoices.exe	powershell.exe
PID 2552 wrote to memory of 4968	2552	Shipping_Document-Invoices.exe	powershell.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe
PID 2552 wrote to memory of 3956	2552	Shipping_Document-Invoices.exe	CasPol.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

Shipping_Document-Invoices.exe

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

C:\Users\Admin\AppData\Local\Temp\Shipping_Document-Invoices\Shipping_Document-Invoices.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping_Document-Invoices\Shipping_Document-Invoices.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:2552

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\Shipping_Document-Invoices\Shipping_Document-Invoices.exe" -Force
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4968

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
PID:3956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

3

Modify Registry

4

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

5