agenttesla | f83bfb3ecce4aaa00303143f0e039d77cc153626211ff27ea0f6d68e48456d9c

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	Petikan segera.08.10.2021.xlxs.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
1988	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\Wow6432Node\VMware, Inc.\VMware Tools	Petikan segera.08.10.2021.xlxs.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	Petikan segera.08.10.2021.xlxs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Petikan segera.08.10.2021.xlxs.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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Petikan segera.08.10.2021.xlxs.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Petikan segera.08.10.2021.xlxs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	Petikan segera.08.10.2021.xlxs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1640	Petikan segera.08.10.2021.xlxs.exe
1640	Petikan segera.08.10.2021.xlxs.exe
1988	powershell.exe
2800	RegSvcs.exe
2800	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	Petikan segera.08.10.2021.xlxs.exe
Token: SeDebugPrivilege	1988	powershell.exe
Token: SeDebugPrivilege	2800	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 1988	1640	Petikan segera.08.10.2021.xlxs.exe	31
PID 1640 wrote to memory of 1988	1640	Petikan segera.08.10.2021.xlxs.exe	31
PID 1640 wrote to memory of 1988	1640	Petikan segera.08.10.2021.xlxs.exe	31
PID 1640 wrote to memory of 1988	1640	Petikan segera.08.10.2021.xlxs.exe	31
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34
PID 1640 wrote to memory of 2800	1640	Petikan segera.08.10.2021.xlxs.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Petikan segera.08.10.2021.xlxs.exe
"C:\Users\Admin\AppData\Local\Temp\Petikan segera.08.10.2021.xlxs.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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- 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\Petikan segera.08.10.2021.xlxs.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2

Lateral Movement

Collection

Email Collection