formbook | 6142dc6925e0dd47d6f7bd5b29ad64528f8837e813df6b0e22164443f948c5cb

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-312935884-697965778-3955649944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\YXZDLRUH5 = "C:\\Program Files (x86)\\Windows Mail\\wab.exe"	rundll32.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
2140	powershell.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Factura Proforma Gregal pdf = "C:\\Users\\Admin\\Factura Proforma Gregal pdf.exe"	Factura Proforma Gregal pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 2616 set thread context of 1200	2616	wab.exe	21
PID 2548 set thread context of 1200	2548	rundll32.exe	21

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	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-312935884-697965778-3955649944-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2140	powershell.exe
2616	wab.exe
2616	wab.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2616	wab.exe
2616	wab.exe
2616	wab.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe
2548	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1672	Factura Proforma Gregal pdf.exe
Token: SeDebugPrivilege	2140	powershell.exe
Token: SeDebugPrivilege	2616	wab.exe
Token: SeDebugPrivilege	2548	rundll32.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 2140	1672	Factura Proforma Gregal pdf.exe	29
PID 1672 wrote to memory of 2140	1672	Factura Proforma Gregal pdf.exe	29
PID 1672 wrote to memory of 2140	1672	Factura Proforma Gregal pdf.exe	29
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1672 wrote to memory of 2616	1672	Factura Proforma Gregal pdf.exe	31
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2548	1200	Explorer.EXE	32
PID 2548 wrote to memory of 1644	2548	rundll32.exe	33
PID 2548 wrote to memory of 1644	2548	rundll32.exe	33
PID 2548 wrote to memory of 1644	2548	rundll32.exe	33
PID 2548 wrote to memory of 1644	2548	rundll32.exe	33
PID 2548 wrote to memory of 1644	2548	rundll32.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- 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:1672
- - 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:2140
- - C:\Program Files (x86)\Windows Mail\wab.exe
    "C:\Program Files (x86)\Windows Mail\wab.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2616
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Adds policy 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:2548
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1644

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System