agenttesla | c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe = "0"	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.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
2428	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe = "0"	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.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.

flow	ioc
2	api.ipify.org
5	ip-api.com

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3988 set thread context of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2428	powershell.exe
2428	powershell.exe
3964	AddInProcess32.exe
3964	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	3964	AddInProcess32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3964	AddInProcess32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 2428	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	86
PID 3988 wrote to memory of 2428	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	86
PID 3988 wrote to memory of 2692	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	88
PID 3988 wrote to memory of 2692	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	88
PID 3988 wrote to memory of 2692	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	88
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 3964	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	89
PID 3988 wrote to memory of 2236	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	90
PID 3988 wrote to memory of 2236	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	90
PID 3988 wrote to memory of 2236	3988	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe	90

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"	c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe

C:\Users\Admin\AppData\Local\Temp\c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe
"C:\Users\Admin\AppData\Local\Temp\c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.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:3988
- 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\c6cf283a6dd89338f01cf434902ec51e05409d2fb6ee7dca1044495b2bb77e9c.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  PID:2692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3964
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:2236

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

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion