Resubmissions

27/04/2026, 11:33

260427-nn5v1acx4m9

27/04/2026, 11:24

260427-nhr2yscv9j9

27/04/2026, 11:18

260427-nec4macv4k9

Analysis

  • user interaction
    yes
  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-it
  • resource tags

    arch:x64arch:x86image:win11-20260130-itlocale:it-itos:windows11-21h2-x64systemwindows
  • submitted
    27/04/2026, 11:18

General

  • Target
    main3.exe
  • Size 51.9MB
  • Sample260427-nec4macv4k
  • SHA256 406e80fc0a2d13eda8c21a4585e2eee91482ada9ce7bbf35d3f6c050f70bc27c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Renames multiple (166) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Loads dropped DLL 22 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Drops desktop.ini file(s) 15 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\main3.exe
    "C:\Users\Admin\AppData\Local\Temp\main3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\main3.exe
      C:\Users\Admin\AppData\Local\Temp\main3.exe
      2⤵
      • Loads dropped DLL
      • Drops desktop.ini file(s)
      • Suspicious use of SetWindowsHookEx
      PID:6040
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    PID:5112
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1212

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\_queue.pyd
        • Size 33KB
        • SHA256 e4956834df819c1758d17c1c42a152306f7c0ea7b457ca24ce2f6466a6cb1caa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _tkinter.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\_tkinter.pyd
        • Size 66KB
        • SHA256 6edeccc758733e44edaeff20e403ede9a782335f7bd80975697547087c32c5cc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cacert.pem

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\certifi\cacert.pem
        • Size 284KB
        • SHA256 488ba960602bf07cc63f4ef7aec108692fec41820fc3328a8e3f3de038149aee
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _rust.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\cryptography\hazmat\bindings\_rust.pyd
        • Size 8.6MB
        • SHA256 3e5fad46bd63d3c7d88aa385afc187e72aae88d632427da17509cd8fbb6ff197
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\libcrypto-3.dll
        • Size 5.0MB
        • SHA256 4e5d5d20d6d31e72ab341c81e97b89e514326c4c861b48638243bdf0918cfa43
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\libssl-3.dll
        • Size 774KB
        • SHA256 2e4d35b681a172d3298caf7dc670451be7a8ba27c26446efc67470742497a950
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tcl86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\tcl86t.dll
        • Size 1.8MB
        • SHA256 31560ca3b0eec014013405e9652b9261824232883749f0461d7d4e5f7faea3ab
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\tk86t.dll
        • Size 1.5MB
        • SHA256 34d402f3d6a237aac1165a010016ac032e0ae1a86dcfa03dda49ebfc0af40cad
        • MD5 SHA1 SHA512 SSDEEP TLSH

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\zlib1.dll
        • Size 144KB
        • SHA256 94675de9234f00e75c73e4973f8fb49a272a1df8003337205cd1b15fb642a168
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_bz2.pyd
        • Size 84KB
        • SHA256 5ba872caa7fcee0f4fb81c6e0201ceed9bd92a3624f16828dd316144d292a869
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _cffi_backend.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_cffi_backend.pyd
        • Size 175KB
        • SHA256 95f530ef3de8cde4b8d4341cb7089e8db8ba297fb324efc214a1a54127d54ee8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_hashlib.pyd
        • Size 63KB
        • SHA256 14765e83996fe6d50aedc11bb41d7c427a3e846a6a6293a4a46f7ea7e3f14148
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_lzma.pyd
        • Size 155KB
        • SHA256 6f48e7eba363cb67f3465a6c91b5872454b44fc30b82710dfa4a4489270ce95c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_socket.pyd
        • Size 82KB
        • SHA256 8daefaff53e6956f5aea5279a7c71f17d8c63e2b0d54031c3b9e82fcb0fb84db
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\_ssl.pyd
        • Size 178KB
        • SHA256 21ca71b2c1766fc68734cb3d1e7c2c0439b86bcfb95e00b367c5fd48c59e617c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        main3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\main3.dll
        • Size 21.4MB
        • SHA256 7e572bb674a6178c92788384f990db01b359176ed62dcfe8057dff8d816e2d66
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\python3.dll
        • Size 70KB
        • SHA256 4f93342b59addedbe45ebd973e6449ab85b11c0aab6ad7962124e293c5d03638
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python313.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\python313.dll
        • Size 5.8MB
        • SHA256 bf68cf819a1e865170430c10e91c18b427aef88db1da1742020443864aa2b749
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\select.pyd
        • Size 31KB
        • SHA256 baee284995b22d495fd12fa8378077e470978db1522c61bfb9af37fb827f33d1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msgcat-1.6.1.tm

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl8\8.5\msgcat-1.6.1.tm
        • Size 34KB
        • SHA256 adca186be560f2236265f538d4cb6df1171bed91192118796988bb9c08a4bc7c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        auto.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\auto.tcl
        • Size 21KB
        • SHA256 08113823951619d659eb03a1f6acd2f9500e1264795219125a5df7b83cabcb99
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cp1252.enc

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\http1.0\pkgIndex.tcl
        • Size 746B
        • SHA256 77265723959c092897c2449c5b7768ca72d0efcd8c505bddbb7a84f6aa401339
        • MD5 SHA1 SHA512 TLSH

        init.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\init.tcl
        • Size 25KB
        • SHA256 acacce15658dd7ce8f69b1e3d3a94770a22972a8e906eb3b61cd06f0ecd5db59
        • MD5 SHA1 SHA512 SSDEEP TLSH

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\opt0.4\pkgIndex.tcl
        • Size 636B
        • SHA256 68accee3eb8d0f134f9472c95425190ec08e7793df20a58d7d35325f42804695
        • MD5 SHA1 SHA512 TLSH

        package.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\package.tcl
        • Size 23KB
        • SHA256 b471cec9056b62d562020b14d69d4bd1f92dfe158afc8ba81c6341836211ca46
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tclIndex

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\tclIndex
        • Size 7KB
        • SHA256 577f042bbe640e2739606a1f76098abdb8bd1d1f31526402fb82b21091644f65
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tm.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tcl\tm.tcl
        • Size 11KB
        • SHA256 f0cc13daca21fee538cca757aa09e88a969a85174eda26e61e573dda6c7ba413
        • MD5 SHA1 SHA512 SSDEEP TLSH

        button.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\button.tcl
        • Size 21KB
        • SHA256 1f5dd8d81b26f16e772e92fd2a22accb785004d0ed3447e54f87005d9c6a07a5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        entry.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\entry.tcl
        • Size 18KB
        • SHA256 6ac78f764434f932d37e8183aa6db5d04eb1848b774c92f7abc243ecb7d4a59b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icons.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\icons.tcl
        • Size 10KB
        • SHA256 1264940e62b9a37967925418e9d0dc0befd369e8c181b9bab3d1607e3cc14b85
        • MD5 SHA1 SHA512 SSDEEP TLSH

        listbox.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\listbox.tcl
        • Size 14KB
        • SHA256 47c75f9f8348bf8f2c086c57b97b73741218100ca38d10b8abdf2051c95b9801
        • MD5 SHA1 SHA512 SSDEEP TLSH

        menu.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\menu.tcl
        • Size 39KB
        • SHA256 ae4ee8400174c798337b9c60867cbc94f811b249ebe6dea21ec6f960bcf5f8cb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        panedwindow.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\panedwindow.tcl
        • Size 5KB
        • SHA256 aa4f87e41ac8297f51150f2a9f787607690d01793456b93f0939c54d394731f9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\pkgIndex.tcl
        • Size 376B
        • SHA256 6127926b94db2992ab450fc6cc2ec3d071f7bbc856656d0ae20cc3fd4036f547
        • MD5 SHA1 SHA512 TLSH

        scale.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\scale.tcl
        • Size 8KB
        • SHA256 0747a387fdd1b2c7135eceae7b392ed52e1d1ebf3ffa90febe886dbc0981eb74
        • MD5 SHA1 SHA512 SSDEEP TLSH

        scrlbar.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\scrlbar.tcl
        • Size 12KB
        • SHA256 eec90404f702d3cfbfaec0f13bf5ed1ebeb736bee12d7e69770181a25401c61f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        spinbox.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\spinbox.tcl
        • Size 16KB
        • SHA256 747889c3086c917a34554a9dc495bc0c08a03fd3a5828353ed2a64b97f376835
        • MD5 SHA1 SHA512 SSDEEP TLSH

        text.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\text.tcl
        • Size 34KB
        • SHA256 f7ecc5ae6eb297c79aad5cfc200b29c4e72409641fa369c5cdbba30ae41e982a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\tk\tk.tcl
        • Size 23KB
        • SHA256 b7fd24177b17f67da2ca671f711309c65cf246be1fd0cf4f1ab8f3ea9ca2c3f1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_4952_134217623753332238\unicodedata.pyd
        • Size 694KB
        • SHA256 a67eec238162fde20ac24ca7df931792734aad0611be22d1b3a71bc15acf72f3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/6040-1350-0x00007FFCFA720000-0x00007FFCFA749000-memory.dmp

        memory/6040-1351-0x000001DD71630000-0x000001DD7163C000-memory.dmp

        memory/6040-1353-0x000001DD71630000-0x000001DD7163C000-memory.dmp

        memory/6040-1352-0x00007FFCFA720000-0x00007FFCFA749000-memory.dmp