hawkeye | b814ba6f4fb3e960ce4508be9a4409a9f914097de8cf7a6255260987f9f650ab

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe

Deletes itself 1 IoCs

pid	Process
1580	Windows Update.exe

Executes dropped EXE 1 IoCs

pid	Process
1580	Windows Update.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe"	Windows Update.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
21	whatismyipaddress.com
23	whatismyipaddress.com

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 3 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	ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1580	Windows Update.exe
Token: SeRestorePrivilege	1520	dw20.exe
Token: SeBackupPrivilege	1520	dw20.exe
Token: SeBackupPrivilege	1520	dw20.exe
Token: SeBackupPrivilege	1520	dw20.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1580	Windows Update.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1580	1968	ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe	91
PID 1968 wrote to memory of 1580	1968	ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe	91
PID 1968 wrote to memory of 1580	1968	ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe	91
PID 1580 wrote to memory of 1520	1580	Windows Update.exe	115
PID 1580 wrote to memory of 1520	1580	Windows Update.exe	115
PID 1580 wrote to memory of 1520	1580	Windows Update.exe	115

C:\Users\Admin\AppData\Local\Temp\ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe
"C:\Users\Admin\AppData\Local\Temp\ef962b6dc96472a374447fc8c2e4409c44532d1a446646f3dcd262b95143d0cb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Roaming\Windows Update.exe
  "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 2440
    3⤵
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery