agenttesla | e0a879d49cabbd517cd611b81cd5935e4f024532aa43aeba310650ce2411850c

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

Product Requirement Specification.exe

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

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

Product Requirement Specification.exe

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

648 powershell.exe

pid	process
648	powershell.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

Product Requirement Specification.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

CasPol.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Microsoft\Windows\CurrentVersion\Run\AWcZJz = "C:\\Users\\Admin\\AppData\\Roaming\\AWcZJz\\AWcZJz.exe"	CasPol.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

Product Requirement Specification.exe

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

2 api.ipify.org
1 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Product Requirement Specification.exe

description pid process target process

PID 3324 set thread context of 2064 3324 Product Requirement Specification.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

648 powershell.exe
648 powershell.exe
2064 CasPol.exe
2064 CasPol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeCasPol.exe

description pid process

Token: SeDebugPrivilege 648 powershell.exe
Token: SeDebugPrivilege 2064 CasPol.exe

flow	ioc
2	api.ipify.org
1	api.ipify.org

description	pid	process	target process
PID 3324 set thread context of 2064	3324	Product Requirement Specification.exe	CasPol.exe

pid	process
648	powershell.exe
648	powershell.exe
2064	CasPol.exe
2064	CasPol.exe

description	pid	process
Token: SeDebugPrivilege	648	powershell.exe
Token: SeDebugPrivilege	2064	CasPol.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Product Requirement Specification.exe

description	pid	process	target process
PID 3324 wrote to memory of 648	3324	Product Requirement Specification.exe	powershell.exe
PID 3324 wrote to memory of 648	3324	Product Requirement Specification.exe	powershell.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 2064	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 4068	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 4068	3324	Product Requirement Specification.exe	CasPol.exe
PID 3324 wrote to memory of 4068	3324	Product Requirement Specification.exe	CasPol.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

Product Requirement Specification.exe

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

C:\Users\Admin\AppData\Local\Temp\Product Requirement Specification.exe
"C:\Users\Admin\AppData\Local\Temp\Product Requirement Specification.exe"
1⤵
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3324

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\Product Requirement Specification.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:648

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2064

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
PID:4068

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control