formbook | ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmmon32.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\0FDXY = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	cmmon32.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2772 set thread context of 1172	2772	wmplayer.exe	21
PID 2772 set thread context of 1172	2772	wmplayer.exe	21
PID 3020 set thread context of 1172	3020	cmmon32.exe	21

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	cmmon32.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	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2772	wmplayer.exe
2772	wmplayer.exe
2772	wmplayer.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
2772	wmplayer.exe
2772	wmplayer.exe
2772	wmplayer.exe
2772	wmplayer.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe
3020	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe
Token: SeDebugPrivilege	2772	wmplayer.exe
Token: SeShutdownPrivilege	1172	Explorer.EXE
Token: SeShutdownPrivilege	1172	Explorer.EXE
Token: SeDebugPrivilege	3020	cmmon32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1172	Explorer.EXE
1172	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1172	Explorer.EXE
1172	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1172	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2772	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	31
PID 2264 wrote to memory of 2860	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	32
PID 2264 wrote to memory of 2860	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	32
PID 2264 wrote to memory of 2860	2264	ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe	32
PID 1172 wrote to memory of 3020	1172	Explorer.EXE	34
PID 1172 wrote to memory of 3020	1172	Explorer.EXE	34
PID 1172 wrote to memory of 3020	1172	Explorer.EXE	34
PID 1172 wrote to memory of 3020	1172	Explorer.EXE	34
PID 3020 wrote to memory of 1776	3020	cmmon32.exe	35
PID 3020 wrote to memory of 1776	3020	cmmon32.exe	35
PID 3020 wrote to memory of 1776	3020	cmmon32.exe	35
PID 3020 wrote to memory of 1776	3020	cmmon32.exe	35
PID 3020 wrote to memory of 1776	3020	cmmon32.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe
  "C:\Users\Admin\AppData\Local\Temp\ae2734cb4074c909b5d1469c4901bfc03487342723505ef4c1adcb41d64e3917N.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2264
- - 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:2772
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2264 -s 644
    3⤵
    PID:2860
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3004
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:3020
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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