Analysis
- max time kernel
10s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/08/2026, 09:31
Static task
static1
Behavioral task
behavioral1
Sample
extension-fix-XZB4NB.hta
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
extension-fix-XZB4NB.hta
Resource
win11ltsc2024-20260710-en
General
- Target extension-fix-XZB4NB.hta
- Size 3KB
- Sample260803-lg64datdjd
- SHA256 2081b3ac22fa834060fdc73c5a039d9e8288721bca1726d4c1c763bfe7f2b41e
- MD5 d770f1bda7f561ecb617f13a1d2724fb
- SHA1 9b793ad38e803ccd379f74305b698f10d05a8042
- SHA512 efbb196a555dc1cda04d4778288a822a9ef66447c7e769498ef2cc0c8a2840c9f01baa9a798ee263656e01bb6ba763f32ab0c247d8004df5b4cfd0e1f5ea9d23
- TLSH T1CB6114F7B95642C1BC325A9B2A2F508D04940602136AE1F8E7A7EC00EF98F9945B87D8
- MD5 SHA1 SHA512 TLSH
Malware Config
Signatures
- Badlisted process makes network request 5 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 5 3544 mshta.exe 7 3544 mshta.exe 8 3544 mshta.exe 10 3544 mshta.exe 11 3544 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 2868 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 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 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 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 - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 2868 cmd.exe 1012 PING.EXE -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe - Modifies registry class 28 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CachePrefix = "Visited:" rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheVersion = "1" rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies\CacheLimit = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Cookies rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_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-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Extensible Cache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content rundll32.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 1012 PING.EXE - Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 10 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious use of FindShellTrayWindow 7 IoCs
pid Process 936 rundll32.exe 4228 rundll32.exe 1520 rundll32.exe 5052 rundll32.exe 3544 mshta.exe 3544 mshta.exe 3544 mshta.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3544 wrote to memory of 936 3544 mshta.exe 90 PID 3544 wrote to memory of 4228 3544 mshta.exe 91 PID 3544 wrote to memory of 1520 3544 mshta.exe 92 PID 3544 wrote to memory of 5052 3544 mshta.exe 93 PID 3544 wrote to memory of 4440 3544 mshta.exe 94 PID 5052 wrote to memory of 4964 5052 rundll32.exe 96 PID 4228 wrote to memory of 3556 4228 rundll32.exe 97 PID 936 wrote to memory of 5972 936 rundll32.exe 98 PID 1520 wrote to memory of 1224 1520 rundll32.exe 99 - Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4440 attrib.exe
Processes
-
C:\Windows\SysWOW64\mshta.exeC:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\extension-fix-XZB4NB.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:3544 -
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:936 -
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:5972
-
-
-
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:4228 -
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:3556
-
-
-
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:1520 -
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:1224
-
-
-
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:5052 -
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:4964
-
-
-
C:\Windows\SysWOW64\attrib.exe"C:\Windows\System32\attrib.exe" +h +s "C:\dqerlssh\"2⤵
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:4440
-
-
C:\dqerlssh\dqerlssh.exe"C:\dqerlssh\dqerlssh.exe" C:\dqerlssh\dqerlssh2⤵PID:3880
-
-
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 82⤵PID:4420
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:000000003⤵PID:1760
-
-
-
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:2868 -
C:\Windows\SysWOW64\PING.EXEping -n 300 -w 1000 127.0.0.13⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1012
-
-
Network
MITRE ATT&CK Enterprise v16
Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\dqerlssh\a1.zip
- Size 494KB
- SHA256 03b8fbf483dfa2b247615b755d8a33bf6eeb6a594c714c24a31fcca9a731b6f9
- MD5 b366fbca2c902d44d6f5895fe3918cb2
- SHA1 2469f23be3ade03a09b013e852830d40ae9da0e3
- SHA512 c8516f29948f424f66f7f19f27337d1ebe081a7699a74356325594f8ae69a25fb5a4b7b0ebaa6905e8d370ff9781e0e1044427241f10b726fc76865cb58ff35a
- SSDEEP 12288:UxU7hblQnL+/dh+Gez4yOGtBan225oCWp8SrIa:Uq7hblmK/dgGeVlk22aCarIa
- TLSH T1C7B4231C22C4BD086D3D97FB58539F7405EA2A9E14B8024DE18B63C4BBCEF815F829E5
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\dqerlssh\a2.zip
- Size 1.3MB
- SHA256 e0135a1aa9dc0f2a3e33802504a1dd2588652a9a2e1b300ca3ac57c752050d39
- MD5 7c4add45cea1174fdf8033c77eda7a94
- SHA1 80f739b52a96018f08089545dafa94dac7202987
- SHA512 4bc7cd76a953cfd2e73fa68bd56e239fedae829bd6dc02d448e6705632c6b13bfb30bdb5a7914e823fcd4679cd2802df53f8397eaa7ace735f11fb00b641e1d2
- SSDEEP 24576:RAuYNwua6NduNqjRt1pSdu4E0mcKptG6lgVT0kQkmSp9QpDH1tMlyan:RAuSw7Ku4xpSd7m7BlgVQmvQJH1tC
- TLSH T1D2553355B7EDDF14E07C52A1D9C14ED42EE304ADBFE8CC081AC8478895D236DA948EBA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\dqerlssh\a3.zip
- Size 2KB
- SHA256 542f17bc955fe04cc7c02222621b5f447862133ef64250de1893f47cf9333766
- MD5 7fc1abd31645d102fedd444bcdd3cbc8
- SHA1 0571510c542ad0c2c1b86577a7c5fc33054fcc70
- SHA512 b793d79bde53f6ef89452be6fdb14b9ae8efac5aa98893b2401144630d898dafd1718cbbf0f432f586f4f7af610f4ac6da66551434b347c231c49369dce9e430
- TLSH T17C413CE8CD6C7F91D28E7D34991454B0593B2EC449C4617A0EBEEC441120398DF2E42C
- MD5 SHA1 SHA512 TLSH
- Path C:\dqerlssh\dqerlssh
- Size 1.3MB
- SHA256 30af0a4b9b7c7d8cf41c169be3d51c03d9dabd0c18ed699b31850b618b5db55e
- MD5 3acd16edf0a4a2c6ece5bdb47bbfe252
- SHA1 f2c68a96d6233778d1900a859ff089284c1672f2
- SHA512 db484aa924751393a2bb72b482dea0882e2ea077a48f24e9535c1dd4fb49491779832533a50b509770220503952dc01253e62205b3a376ee4660d7c7f3348172
- SSDEEP 24576:wAsYBwwc6NnutqPLth3SduIE0mcKppG2RgzTckokmGpVQpHH3tghysG:wAsiw7WuYn3Sdpm7PRgzIYrQhH3tb
- TLSH T121553355B7EDDF04E0BD51A1D9C14ED42EE304ADBFE8CC081AC84788D5D236DA948EBA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\dqerlssh\dqerlssh.exe
- Size 957KB
- SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
- MD5 279274f8a137bf31425a9c2c14444b66
- SHA1 6f7f971406854309d94139aa70bdc772308aff52
- SHA512 2e69e99ae2c2f0c3361351853ecfcd1982ea542ef8aff9314e991642f106a87d45479f21f53367ad93b29ce9d98b60706ff9554a9c9d2a793fbed1589b90a85d
- SSDEEP 24576:8SmEH7kpRArkvBz1oxovFDVeAj2HoB3a33rfBH:827kpRA4R1oGDVeQXsrf
- TLSH T11B259E0373D18022FF93A9721E5FE72656BC6D2A0323956F13D81EB9F9305B14A1E672
- MD5 SHA1 SHA512 SSDEEP TLSH