agenttesla | b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe = "0"	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.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

pid	Process
1724	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe = "0"	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.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.

flow	ioc
2	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1036	3324	WerFault.exe	87

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1724	powershell.exe
1724	powershell.exe
3324	regsvcs.exe
3324	regsvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
Token: SeDebugPrivilege	1724	powershell.exe
Token: SeDebugPrivilege	3324	regsvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 1724	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	85
PID 3608 wrote to memory of 1724	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	85
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3324	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	87
PID 3608 wrote to memory of 3344	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	88
PID 3608 wrote to memory of 3344	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	88
PID 3608 wrote to memory of 3344	3608	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe	88

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe

C:\Users\Admin\AppData\Local\Temp\b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe
"C:\Users\Admin\AppData\Local\Temp\b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.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 AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3608
- 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\b2fe5db5a98a2649d5fe93126e699a7dbe156a4f99bf449c51a6027ac8065a5b.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1724
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3324
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 1756
    3⤵
    - Program crash
    PID:1036
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  PID:3344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3324 -ip 3324
1⤵
PID:3152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

Query Registry