formbook | 0baef7154f809c5d606ae9e471aa52d992ccfda2972b831cc7ce0bafec11f3fd

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

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/2268-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2268-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1648-29-0x00000000007A0000-0x00000000007CF000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WJOTFTBPVFM = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	ipconfig.exe
Key created	\Registry\User\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	ipconfig.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
3304	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.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

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

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 4824 set thread context of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 2268 set thread context of 3408	2268	wmplayer.exe	56
PID 1648 set thread context of 3408	1648	ipconfig.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	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

Command and Scripting Interpreter

T1059

pid	Process
1648	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	ipconfig.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-1-5-21-2170637797-568393320-3232933035-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Runs regedit.exe 1 IoCs

pid	Process
3196	regedit.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3304	powershell.exe
3304	powershell.exe
3304	powershell.exe
2268	wmplayer.exe
2268	wmplayer.exe
2268	wmplayer.exe
2268	wmplayer.exe
2268	wmplayer.exe
2268	wmplayer.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2268	wmplayer.exe
2268	wmplayer.exe
2268	wmplayer.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe
1648	ipconfig.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	powershell.exe
Token: SeDebugPrivilege	2268	wmplayer.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	1648	ipconfig.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3408	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 3304	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	97
PID 4824 wrote to memory of 3304	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	97
PID 4824 wrote to memory of 3196	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	99
PID 4824 wrote to memory of 3196	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	99
PID 4824 wrote to memory of 3196	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	99
PID 4824 wrote to memory of 3196	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	99
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 2268	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	101
PID 4824 wrote to memory of 4580	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	102
PID 4824 wrote to memory of 4580	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	102
PID 4824 wrote to memory of 4580	4824	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	102
PID 3408 wrote to memory of 1648	3408	Explorer.EXE	107
PID 3408 wrote to memory of 1648	3408	Explorer.EXE	107
PID 3408 wrote to memory of 1648	3408	Explorer.EXE	107
PID 1648 wrote to memory of 4448	1648	ipconfig.exe	110
PID 1648 wrote to memory of 4448	1648	ipconfig.exe	110
PID 1648 wrote to memory of 4448	1648	ipconfig.exe	110
PID 1648 wrote to memory of 388	1648	ipconfig.exe	114
PID 1648 wrote to memory of 388	1648	ipconfig.exe	114
PID 1648 wrote to memory of 388	1648	ipconfig.exe	114

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:3408
- 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:4824
- - 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:3304
- - C:\Windows\regedit.exe
    "C:\Windows\regedit.exe"
    3⤵
    - Runs regedit.exe
    PID:3196
- - 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:2268
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
    3⤵
    PID:4580
- C:\Windows\SysWOW64\ipconfig.exe
  "C:\Windows\SysWOW64\ipconfig.exe"
  2⤵
  - Adds policy Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4448
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:388

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 --field-trial-handle=4348,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8
1⤵
PID:3908

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

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery