formbook | 0baef7154f809c5d606ae9e471aa52d992ccfda2972b831cc7ce0bafec11f3fd

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "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
behavioral1/memory/2692-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2692-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2804-22-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3294248377-1418901787-4083263181-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msdt.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
2968	powershell.exe

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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\K6AD-6RXGV = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	msdt.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

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 2392 set thread context of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2692 set thread context of 1276	2692	wmplayer.exe	21
PID 2804 set thread context of 1276	2804	msdt.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	msdt.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3294248377-1418901787-4083263181-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2692	wmplayer.exe
2968	powershell.exe
2692	wmplayer.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2692	wmplayer.exe
2692	wmplayer.exe
2692	wmplayer.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe
2804	msdt.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	2692	wmplayer.exe
Token: SeShutdownPrivilege	1276	Explorer.EXE
Token: SeDebugPrivilege	2804	msdt.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1276	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2968	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	31
PID 2392 wrote to memory of 2968	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	31
PID 2392 wrote to memory of 2968	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	31
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2692	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	33
PID 2392 wrote to memory of 2728	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	34
PID 2392 wrote to memory of 2728	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	34
PID 2392 wrote to memory of 2728	2392	573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe	34
PID 1276 wrote to memory of 2804	1276	Explorer.EXE	35
PID 1276 wrote to memory of 2804	1276	Explorer.EXE	35
PID 1276 wrote to memory of 2804	1276	Explorer.EXE	35
PID 1276 wrote to memory of 2804	1276	Explorer.EXE	35
PID 2804 wrote to memory of 1656	2804	msdt.exe	37
PID 2804 wrote to memory of 1656	2804	msdt.exe	37
PID 2804 wrote to memory of 1656	2804	msdt.exe	37
PID 2804 wrote to memory of 1656	2804	msdt.exe	37
PID 2804 wrote to memory of 1656	2804	msdt.exe	37

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⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe
  "C:\Users\Admin\AppData\Local\Temp\573d8ee9678cef8163e96937a6a5a4f14a5ade12f5646ab05550c0038c770e5d.exe"
  2⤵
  - UAC bypass
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2392
- - 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:2968
- - 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:2692
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2392 -s 872
    3⤵
    PID:2728
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:2804
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1656

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

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

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

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery