agenttesla | 01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe = "0"	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.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:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Control Panel\International\Geo\Nation	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe = "0"	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.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-1-5-21-433534792-1200107535-3148087551-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TulzXve = "C:\\Users\\Admin\\AppData\\Roaming\\TulzXve\\TulzXve.exe"	CasPol.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 api.ipify.org

flow	ioc
3	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	pid	process	target process
PID 2128 set thread context of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.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:

CasPol.exepowershell.exe

pid process

544 CasPol.exe
544 CasPol.exe
4748 powershell.exe
4748 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CasPol.exepowershell.exe

description pid process

Token: SeDebugPrivilege 544 CasPol.exe
Token: SeDebugPrivilege 4748 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

CasPol.exe

pid process

544 CasPol.exe

pid	process
544	CasPol.exe
544	CasPol.exe
4748	powershell.exe
4748	powershell.exe

description	pid	process
Token: SeDebugPrivilege	544	CasPol.exe
Token: SeDebugPrivilege	4748	powershell.exe

pid	process
544	CasPol.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	pid	process	target process
PID 2128 wrote to memory of 4748	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	powershell.exe
PID 2128 wrote to memory of 4748	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	powershell.exe
PID 2128 wrote to memory of 4748	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	powershell.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe
PID 2128 wrote to memory of 544	2128	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe	CasPol.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe

C:\Users\Admin\AppData\Local\Temp\01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe
"C:\Users\Admin\AppData\Local\Temp\01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.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:2128

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\01b2af31da46484abe30d7395049066bb04bfac6ed42379f1f2c083a5e0faa3b.exe" -Force
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4748

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
- Suspicious use of SetWindowsHookEx
PID:544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

T1562

Disable or Modify Tools

Modify Registry