02792bb42e3aa059cf180cf6aa8add3126a9e7f9d39ef058c63056bffa60808b

General

Target
extension-fix-YBNNWW.hta
Size 3KB
Sample260803-ldff9afc97
SHA256 02792bb42e3aa059cf180cf6aa8add3126a9e7f9d39ef058c63056bffa60808b
MD5 4f13ea7c7c888ff555d7e7afc974e6c4
SHA1 6f566b0c68dafe0d5a7ab16a9700c0e48197e517
SHA512 178733f9d8c8762a6cbe8da78af0aee2e05ba733939f9c11efb67d0eea88df1cd5056ceda1c45ebc407f161dd0923562f6481c151fa4edbbec59fdd968493e5f
TLSH
T16361EAF7B94A52D5BD328A9B1E6F40C910A422021326E5F8F6A6EC00DF88E5D41787E8
MD5 SHA1 SHA512 TLSH

Score

8^/10

adware discovery spyware

Malware Config

Signatures

Badlisted process makes network request 7 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
3	3616	mshta.exe
5	3616	mshta.exe
7	3616	mshta.exe
23	3616	mshta.exe
24	3616	mshta.exe
25	3616	mshta.exe
26	3616	mshta.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

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\Control Panel\International\Geo\Nation	mshta.exe

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 7 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 6 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe

Modifies registry class 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CachePrefix = "Visited:"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CachePrefix	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Extensible Cache	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheLimit = "1"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CachePrefix = "Visited:"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CachePrefix	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheVersion = "1"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CachePrefix	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheLimit = "51200"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CacheVersion = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheVersion = "1"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CachePrefix = "Visited:"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CacheLimit = "1"	rundll32.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	25	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2148	rundll32.exe
1736	rundll32.exe
4496	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3616 wrote to memory of 1736	3616	mshta.exe	97
PID 3616 wrote to memory of 2148	3616	mshta.exe	96
PID 3616 wrote to memory of 4496	3616	mshta.exe	98
PID 1736 wrote to memory of 1276	1736	rundll32.exe	101
PID 2148 wrote to memory of 1616	2148	rundll32.exe	102
PID 4496 wrote to memory of 2852	4496	rundll32.exe	103

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\extension-fix-YBNNWW.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- Badlisted process makes network request
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:1616
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:1276
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:2852