agenttesla | b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\2812D5DB9E834810A65DBB1B8891AB6F = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe\""	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe

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

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2508 set thread context of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2804	CasPol.exe
2804	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe
Token: SeDebugPrivilege	2804	CasPol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2804	CasPol.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31
PID 2508 wrote to memory of 2804	2508	b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe

C:\Users\Admin\AppData\Local\Temp\b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe
"C:\Users\Admin\AppData\Local\Temp\b30d15e1fd826e16c27bda3b36e7393bf2b0c007e3e3290a571ba3dd04c4c766.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2804

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

2

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2

Lateral Movement

Collection

Email Collection