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

2816 powershell.exe

pid	process
2816	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Product Requirement Specification.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	Product Requirement Specification.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:

installutil.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AWcZJz = "C:\\Users\\Admin\\AppData\\Roaming\\AWcZJz\\AWcZJz.exe"	installutil.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

28 api.ipify.org
29 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Product Requirement Specification.exe

description pid process target process

PID 4396 set thread context of 1516 4396 Product Requirement Specification.exe installutil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeinstallutil.exe

pid process

2816 powershell.exe
2816 powershell.exe
1516 installutil.exe
1516 installutil.exe
1516 installutil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeinstallutil.exe

description pid process

Token: SeDebugPrivilege 2816 powershell.exe
Token: SeDebugPrivilege 1516 installutil.exe

flow	ioc
28	api.ipify.org
29	api.ipify.org

description	pid	process	target process
PID 4396 set thread context of 1516	4396	Product Requirement Specification.exe	installutil.exe

pid	process
2816	powershell.exe
2816	powershell.exe
1516	installutil.exe
1516	installutil.exe
1516	installutil.exe

description	pid	process
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeDebugPrivilege	1516	installutil.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

Product Requirement Specification.exe

description	pid	process	target process
PID 4396 wrote to memory of 2816	4396	Product Requirement Specification.exe	powershell.exe
PID 4396 wrote to memory of 2816	4396	Product Requirement Specification.exe	powershell.exe
PID 4396 wrote to memory of 2424	4396	Product Requirement Specification.exe	CasPol.exe
PID 4396 wrote to memory of 2424	4396	Product Requirement Specification.exe	CasPol.exe
PID 4396 wrote to memory of 2424	4396	Product Requirement Specification.exe	CasPol.exe
PID 4396 wrote to memory of 3916	4396	Product Requirement Specification.exe	AddInProcess32.exe
PID 4396 wrote to memory of 3916	4396	Product Requirement Specification.exe	AddInProcess32.exe
PID 4396 wrote to memory of 3916	4396	Product Requirement Specification.exe	AddInProcess32.exe
PID 4396 wrote to memory of 1364	4396	Product Requirement Specification.exe	regsvcs.exe
PID 4396 wrote to memory of 1364	4396	Product Requirement Specification.exe	regsvcs.exe
PID 4396 wrote to memory of 1364	4396	Product Requirement Specification.exe	regsvcs.exe
PID 4396 wrote to memory of 2232	4396	Product Requirement Specification.exe	regasm.exe
PID 4396 wrote to memory of 2232	4396	Product Requirement Specification.exe	regasm.exe
PID 4396 wrote to memory of 2232	4396	Product Requirement Specification.exe	regasm.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 1516	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 4856	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 4856	4396	Product Requirement Specification.exe	installutil.exe
PID 4396 wrote to memory of 4856	4396	Product Requirement Specification.exe	installutil.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
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4396

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:2816

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
PID:2424

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
2⤵
PID:3916

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
2⤵
PID:1364

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
2⤵
PID:2232

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1516

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
PID:4856

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

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry