formbook | 573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe = "0"	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/228-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/228-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4212-28-0x0000000000EC0000-0x0000000000EEF000-memory.dmp	formbook

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
3708	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe = "0"	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1132 set thread context of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 228 set thread context of 3572	228	aspnet_wp.exe	56
PID 4212 set thread context of 3572	4212	msdt.exe	56

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 2 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	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3708	powershell.exe
3708	powershell.exe
228	aspnet_wp.exe
228	aspnet_wp.exe
228	aspnet_wp.exe
228	aspnet_wp.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe
4212	msdt.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
228	aspnet_wp.exe
228	aspnet_wp.exe
228	aspnet_wp.exe
4212	msdt.exe
4212	msdt.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	powershell.exe
Token: SeDebugPrivilege	228	aspnet_wp.exe
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeDebugPrivilege	4212	msdt.exe
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE
Token: SeShutdownPrivilege	3572	Explorer.EXE
Token: SeCreatePagefilePrivilege	3572	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3572	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 3708	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	89
PID 1132 wrote to memory of 3708	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	89
PID 1132 wrote to memory of 1488	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	90
PID 1132 wrote to memory of 1488	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	90
PID 1132 wrote to memory of 1488	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	90
PID 1132 wrote to memory of 1488	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	90
PID 1132 wrote to memory of 4016	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	92
PID 1132 wrote to memory of 4016	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	92
PID 1132 wrote to memory of 4016	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	92
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 228	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	95
PID 1132 wrote to memory of 788	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	96
PID 1132 wrote to memory of 788	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	96
PID 1132 wrote to memory of 788	1132	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	96
PID 3572 wrote to memory of 4212	3572	Explorer.EXE	100
PID 3572 wrote to memory of 4212	3572	Explorer.EXE	100
PID 3572 wrote to memory of 4212	3572	Explorer.EXE	100
PID 4212 wrote to memory of 2060	4212	msdt.exe	102
PID 4212 wrote to memory of 2060	4212	msdt.exe	102
PID 4212 wrote to memory of 2060	4212	msdt.exe	102

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3572
- C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
  "C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe"
  2⤵
  - UAC bypass
  - Windows security bypass
  - Checks computer location settings
  - Windows security modification
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:1132
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe" -Force
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3708
- - C:\Windows\System32\svchost.exe
    "C:\Windows\System32\svchost.exe"
    3⤵
    PID:1488
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
    3⤵
    PID:4016
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:228
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    PID:788
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4212
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry