agenttesla | 51a28140eb38dc879d567ab3909ba4b555f861ce1f5b603d2aeff4b47baedcd4

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	Scan_69660758.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	Scan_69660758.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	Scan_69660758.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Scan_69660758.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	Scan_69660758.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Scan_69660758.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1648 set thread context of 1508	1648	Scan_69660758.exe	32

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	Scan_69660758.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	Scan_69660758.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

pid	Process
912	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
268	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	268	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 268	1648	Scan_69660758.exe	28
PID 1648 wrote to memory of 268	1648	Scan_69660758.exe	28
PID 1648 wrote to memory of 268	1648	Scan_69660758.exe	28
PID 1648 wrote to memory of 268	1648	Scan_69660758.exe	28
PID 1648 wrote to memory of 912	1648	Scan_69660758.exe	30
PID 1648 wrote to memory of 912	1648	Scan_69660758.exe	30
PID 1648 wrote to memory of 912	1648	Scan_69660758.exe	30
PID 1648 wrote to memory of 912	1648	Scan_69660758.exe	30
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1648 wrote to memory of 1508	1648	Scan_69660758.exe	32
PID 1508 wrote to memory of 1824	1508	Scan_69660758.exe	33
PID 1508 wrote to memory of 1824	1508	Scan_69660758.exe	33
PID 1508 wrote to memory of 1824	1508	Scan_69660758.exe	33
PID 1508 wrote to memory of 1824	1508	Scan_69660758.exe	33

C:\Users\Admin\AppData\Local\Temp\Scan_69660758.exe
"C:\Users\Admin\AppData\Local\Temp\Scan_69660758.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
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AyxTtIjB.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:268
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AyxTtIjB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp233.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:912
- C:\Users\Admin\AppData\Local\Temp\Scan_69660758.exe
  "C:\Users\Admin\AppData\Local\Temp\Scan_69660758.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1508
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 428
    3⤵
    PID:1824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

T1082

Virtualization/Sandbox Evasion