agenttesla | 153b42776cc381b3e5e8e7850458b76b94682a533de0dedfa20e36f59ea462f0

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	b9fa9fee75d0c5d2631a2f14e19adcb4.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	b9fa9fee75d0c5d2631a2f14e19adcb4.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	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b9fa9fee75d0c5d2631a2f14e19adcb4.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	b9fa9fee75d0c5d2631a2f14e19adcb4.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3232 set thread context of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
4072	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
4072	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
4072	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
4468	powershell.exe
4468	powershell.exe
4468	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Token: SeDebugPrivilege	4468	powershell.exe
Token: SeDebugPrivilege	4072	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 4468	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	110
PID 3232 wrote to memory of 4468	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	110
PID 3232 wrote to memory of 4468	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	110
PID 3232 wrote to memory of 2248	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	112
PID 3232 wrote to memory of 2248	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	112
PID 3232 wrote to memory of 2248	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	112
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113
PID 3232 wrote to memory of 4072	3232	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	113

C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe
"C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3232
- 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\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4468
- C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe
  "C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
  2⤵
  PID:2248
- C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe
  "C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
  2⤵
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4072

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1428 --field-trial-handle=2588,i,14229658658073991926,6938034815163866135,262144 --variations-seed-version /prefetch:8
1⤵
PID:5044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion