formbook | 6142dc6925e0dd47d6f7bd5b29ad64528f8837e813df6b0e22164443f948c5cb

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.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
1908	powershell.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Factura Proforma Gregal pdf = "C:\\Users\\Admin\\Factura Proforma Gregal pdf.exe"	Factura Proforma Gregal pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\XZZX3TBPDH = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	wlanext.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2812 set thread context of 1264	2812	wmplayer.exe	21
PID 1668 set thread context of 1264	1668	wlanext.exe	21
PID 1668 set thread context of 2744	1668	wlanext.exe	33

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 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	wlanext.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1908	powershell.exe
2812	wmplayer.exe
2812	wmplayer.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
2812	wmplayer.exe
2812	wmplayer.exe
2812	wmplayer.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe
1668	wlanext.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	Factura Proforma Gregal pdf.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	2812	wmplayer.exe
Token: SeDebugPrivilege	1668	wlanext.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1908	2252	Factura Proforma Gregal pdf.exe	31
PID 2252 wrote to memory of 1908	2252	Factura Proforma Gregal pdf.exe	31
PID 2252 wrote to memory of 1908	2252	Factura Proforma Gregal pdf.exe	31
PID 2252 wrote to memory of 2744	2252	Factura Proforma Gregal pdf.exe	33
PID 2252 wrote to memory of 2744	2252	Factura Proforma Gregal pdf.exe	33
PID 2252 wrote to memory of 2744	2252	Factura Proforma Gregal pdf.exe	33
PID 2252 wrote to memory of 2744	2252	Factura Proforma Gregal pdf.exe	33
PID 2252 wrote to memory of 2744	2252	Factura Proforma Gregal pdf.exe	33
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 2252 wrote to memory of 2812	2252	Factura Proforma Gregal pdf.exe	34
PID 1264 wrote to memory of 1668	1264	Explorer.EXE	35
PID 1264 wrote to memory of 1668	1264	Explorer.EXE	35
PID 1264 wrote to memory of 1668	1264	Explorer.EXE	35
PID 1264 wrote to memory of 1668	1264	Explorer.EXE	35
PID 1668 wrote to memory of 2628	1668	wlanext.exe	37
PID 1668 wrote to memory of 2628	1668	wlanext.exe	37
PID 1668 wrote to memory of 2628	1668	wlanext.exe	37
PID 1668 wrote to memory of 2628	1668	wlanext.exe	37
PID 1668 wrote to memory of 2628	1668	wlanext.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Users\Admin\AppData\Local\Temp\Factura Proforma Gregal pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Factura Proforma Gregal pdf.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath $env:UserProfile
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1908
- - C:\Windows\System32\notepad.exe
    "C:\Windows\System32\notepad.exe"
    3⤵
    PID:2744
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Adds policy Run key to start application
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1668
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

3

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery