Analysis
- max time kernel
12s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/08/2026, 09:51
Static task
static1
Behavioral task
behavioral1
Sample
extension-fix-ZJ6DG1.hta
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
extension-fix-ZJ6DG1.hta
Resource
win11ltsc2024-20260709-en
General
- Target extension-fix-ZJ6DG1.hta
- Size 3KB
- Sample260803-lvyn6aff38
- SHA256 be1dc3827fc2683a50f13e69c393087380ed52141a293bb5455db6ce354a73c0
- MD5 3b773d7e98cd25149edad7eeda17b64d
- SHA1 ffb44af2bebd493f70325a2da8137a2cdc16f075
- SHA512 24916389ea26fe266fe25e146750620438219fd17d7b25ab1c4a7ad4271f68133fad523cfa55cc00e01820753abf39cf419a5c98e7d47aab0444f0139e76019d
- TLSH T14961C1F7BA4692C2BC3299DB1A2F008E549556025366E0FCF6D7DC01EF88E4D40B87E8
- MD5 SHA1 SHA512 TLSH
Malware Config
Signatures
- Badlisted process makes network request 4 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 4 5500 mshta.exe 5 5500 mshta.exe 6 5500 mshta.exe 9 5500 mshta.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 5832 cmd.exe - System Location Discovery: System Language Discovery 1 TTPs 10 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.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 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 - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 5832 cmd.exe 5592 PING.EXE -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe - Modifies registry class 28 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheVersion = "1" rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheLimit = "51200" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CacheLimit = "1" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CacheVersion = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_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-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CachePrefix rundll32.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 5592 PING.EXE - Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 9 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious use of FindShellTrayWindow 7 IoCs
pid Process 5960 rundll32.exe 1912 rundll32.exe 5652 rundll32.exe 3296 rundll32.exe 5500 mshta.exe 5500 mshta.exe 5500 mshta.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 5500 wrote to memory of 5652 5500 mshta.exe 90 PID 5500 wrote to memory of 5960 5500 mshta.exe 91 PID 5500 wrote to memory of 1912 5500 mshta.exe 92 PID 5500 wrote to memory of 3296 5500 mshta.exe 93 PID 5500 wrote to memory of 2368 5500 mshta.exe 94 PID 3296 wrote to memory of 1892 3296 rundll32.exe 96 PID 1912 wrote to memory of 5424 1912 rundll32.exe 97 PID 5960 wrote to memory of 3044 5960 rundll32.exe 99 PID 5652 wrote to memory of 4692 5652 rundll32.exe 100 - Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2368 attrib.exe
Processes
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C:\Windows\SysWOW64\mshta.exeC:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\extension-fix-ZJ6DG1.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}1⤵
- Badlisted process makes network request
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5500 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5652 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:4692
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5960 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:3044
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1912 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:5424
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3296 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:1892
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C:\Windows\SysWOW64\attrib.exe"C:\Windows\System32\attrib.exe" +h +s "C:\opjsqnjs\"2⤵
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2368
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C:\opjsqnjs\opjsqnjs.exe"C:\opjsqnjs\opjsqnjs.exe" C:\opjsqnjs\opjsqnjs2⤵PID:2108
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵PID:6132
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵PID:3732
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul2⤵
- Executes a command shell one-liner
- System Network Configuration Discovery: Internet Connection Discovery
PID:5832 -
C:\Windows\SysWOW64\PING.EXEping -n 300 -w 1000 127.0.0.13⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:5592
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Network
MITRE ATT&CK Enterprise v16
Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\opjsqnjs\a1.zip
- Size 494KB
- SHA256 6817d26b3c87dbd3b14cae8dcb72e39c13947f9e0c15b64d066708b1b6277a60
- MD5 bc5b6ef53cc1606a1ca7b2f52f7dbb29
- SHA1 0400bfb5520e7e777c62116357a675b5f680a334
- SHA512 365d5fe86b3ea6c1d71dc9d513be8465e856d9dfb09fce06fad358b7a608a9e555f3747515e991723cb4115b94838daa6bff219de7ca723543934a4b8e03996a
- SSDEEP 12288:yxU7hblQnL+/dh+Gez4yOGtBan225oCWp8SrI8:yq7hblmK/dgGeVlk22aCarI8
- TLSH T109B4231C22C4BD086D3D97FB58539F7405EA2A9E14B8024CE18B73C4ABCEF815F829E5
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\opjsqnjs\a2.zip
- Size 1.3MB
- SHA256 ee8fdf1e0114a8f3e44395f3de419ec6131286ca6063513ad1c856c6cf95dcfb
- MD5 ce7fe9b08b36d775892119e1477c5cab
- SHA1 4811ec2a7b3cbedb05907402cdfcba0dc3857233
- SHA512 a49fbed1421dd1c0feb5b01441858a23aa23558464bf29c8535037eb3eb5ad35740b891e879c60abeb0e53c0fc01fe9aeff9c0fa12754298720f00e8ba815572
- SSDEEP 24576:2AuYNwua6NduNqjRt1pSdu4E0mcKptG6lgVT0kQkmSp9QpDH1tMlya0:2AuSw7Ku4xpSd7m7BlgVQmvQJH1tR
- TLSH T117553355B7EDDF14E07D52A1C9C14ED42EE304ADBFE8CC081AC84788D5D236DA948EBA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\opjsqnjs\a3.zip
- Size 2KB
- SHA256 cd9a8d67a5fc95d3f0e7d9837441388e584f5b361a44d7abc572a807d5fb335a
- MD5 b6a12835e7b487df5657cae75cb0671c
- SHA1 3a8c6fec50d3dcdd3fcbca5a93381218dc1ed573
- SHA512 4b6fc91ac4b12bd45c19a58cb5a3495ab02f45acba1588062d9fd76a625343785b4ca698f9769b284310f44e435a2497418684314a426fbce7be420676c41a13
- TLSH T198411CE98D6CBD91D68EB9749D1454715A3B3DC495C061691EBFEC441130298CB2E46C
- MD5 SHA1 SHA512 TLSH
- Path C:\opjsqnjs\opjsqnjs
- Size 1.3MB
- SHA256 30af0a4b9b7c7d8cf41c169be3d51c03d9dabd0c18ed699b31850b618b5db55e
- MD5 3acd16edf0a4a2c6ece5bdb47bbfe252
- SHA1 f2c68a96d6233778d1900a859ff089284c1672f2
- SHA512 db484aa924751393a2bb72b482dea0882e2ea077a48f24e9535c1dd4fb49491779832533a50b509770220503952dc01253e62205b3a376ee4660d7c7f3348172
- SSDEEP 24576:wAsYBwwc6NnutqPLth3SduIE0mcKppG2RgzTckokmGpVQpHH3tghysG:wAsiw7WuYn3Sdpm7PRgzIYrQhH3tb
- TLSH T121553355B7EDDF04E0BD51A1D9C14ED42EE304ADBFE8CC081AC84788D5D236DA948EBA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\opjsqnjs\opjsqnjs.exe
- Size 957KB
- SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
- MD5 279274f8a137bf31425a9c2c14444b66
- SHA1 6f7f971406854309d94139aa70bdc772308aff52
- SHA512 2e69e99ae2c2f0c3361351853ecfcd1982ea542ef8aff9314e991642f106a87d45479f21f53367ad93b29ce9d98b60706ff9554a9c9d2a793fbed1589b90a85d
- SSDEEP 24576:8SmEH7kpRArkvBz1oxovFDVeAj2HoB3a33rfBH:827kpRA4R1oGDVeQXsrf
- TLSH T11B259E0373D18022FF93A9721E5FE72656BC6D2A0323956F13D81EB9F9305B14A1E672
- MD5 SHA1 SHA512 SSDEEP TLSH