agenttesla | 65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26

Virtualization/Sandbox Evasion

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.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

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\yGbzOMp = "C:\\Users\\Admin\\AppData\\Roaming\\yGbzOMp\\yGbzOMp.exe"	RegSvcs.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

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	pid	process	target process
PID 1380 set thread context of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1272 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exeRegSvcs.exe

pid process

1380 65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
1452 RegSvcs.exe
1452 RegSvcs.exe
1452 RegSvcs.exe

pid	process
1272	schtasks.exe

pid	process
1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
1452	RegSvcs.exe
1452	RegSvcs.exe
1452	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
Token: SeDebugPrivilege	1452	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe

description	pid	process	target process
PID 1380 wrote to memory of 1272	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	schtasks.exe
PID 1380 wrote to memory of 1272	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	schtasks.exe
PID 1380 wrote to memory of 1272	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	schtasks.exe
PID 1380 wrote to memory of 1272	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	schtasks.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe
PID 1380 wrote to memory of 1452	1380	65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe
"C:\Users\Admin\AppData\Local\Temp\65c72bf3dc1578f9c05bb413361e327e87061051f906e8f77b4b9a4a4364cb26.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sckjEnnXiKBFmN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9DF5.tmp"
2⤵
- Creates scheduled task(s)
PID:1272

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1452

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

Modify Registry

T1112

Credential Access

Discovery

Query Registry

4

Virtualization/Sandbox Evasion

2

System Information Discovery

3

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Email Collection