formbook | 8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2958949473-3205530200-1453100116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	systray.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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\U2_XV488_HW = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	systray.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2672 set thread context of 1244	2672	wmplayer.exe	21
PID 2052 set thread context of 1244	2052	systray.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	systray.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2958949473-3205530200-1453100116-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2672	wmplayer.exe
2672	wmplayer.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2672	wmplayer.exe
2672	wmplayer.exe
2672	wmplayer.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe
2052	systray.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	wmplayer.exe
Token: SeShutdownPrivilege	1244	Explorer.EXE
Token: SeDebugPrivilege	2052	systray.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1244	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2672	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	31
PID 2660 wrote to memory of 2652	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	32
PID 2660 wrote to memory of 2652	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	32
PID 2660 wrote to memory of 2652	2660	8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe	32
PID 1244 wrote to memory of 2052	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2052	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2052	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2052	1244	Explorer.EXE	33
PID 2052 wrote to memory of 2180	2052	systray.exe	34
PID 2052 wrote to memory of 2180	2052	systray.exe	34
PID 2052 wrote to memory of 2180	2052	systray.exe	34
PID 2052 wrote to memory of 2180	2052	systray.exe	34
PID 2052 wrote to memory of 2180	2052	systray.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe
  "C:\Users\Admin\AppData\Local\Temp\8ac8568934d1a0ab9a9923449bf11c0d44d97abca0bcabd60b94348642f046ac.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2660
- - 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:2672
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2660 -s 628
    3⤵
    PID:2652
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:2052
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2180

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Location Discovery

T1614

System Language Discovery