Analysis

  • max time kernel
    92s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/06/2024, 01:41

General

  • Target
    2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe
  • Size 13.7MB
  • Sample240607-b4jaqafe5t
  • SHA256 c45332a8a375aed775e1f5399d74c318cd874efa9941ec7dab8ef9f0ec1997b4
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Drops startup file 2 IoCs
  • Loads dropped DLL 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4788
    • C:\Users\Admin\AppData\Local\Temp\2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4468

Network

        MITRE ATT&CK Matrix

        Replay Monitor

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        Downloads

        _imaging.cp37-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\PIL\_imaging.cp37-win_amd64.pyd
        • Size 2.5MB
        • SHA256 70557af68ecc14faa19b03c5f1bc4ac3c26e742b9a2232f0eaad3bba2def0701
        • MD5 SHA1 SHA512 SSDEEP

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\VCRUNTIME140.dll
        • Size 87KB
        • SHA256 bf5ff4603557c9959acec995653d052d9054ad4826df967974efd2f377c723d1
        • MD5 SHA1 SHA512 SSDEEP

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_bz2.pyd
        • Size 87KB
        • SHA256 d2571d3a553ea586fb1e5695dd9745caef9f0e30ac5b876d1307678360674f38
        • MD5 SHA1 SHA512 SSDEEP

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_ctypes.pyd
        • Size 130KB
        • SHA256 7257178f704cd43e68cd7bc80f9814385b2e5d4f35d6e198ae99dce9f4118976
        • MD5 SHA1 SHA512 SSDEEP

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_decimal.pyd
        • Size 260KB
        • SHA256 286117d8ab640301b892556098fdcc26250d36191218e90e22df7435372ec93f
        • MD5 SHA1 SHA512 SSDEEP

        _elementtree.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_elementtree.pyd
        • Size 204KB
        • SHA256 a3c626a788e9d4ffac7efd8f623f953e0003d526ac3e7e42f46dd8dc97aa02a9
        • MD5 SHA1 SHA512 SSDEEP

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_hashlib.pyd
        • Size 38KB
        • SHA256 33c4d06c91166db9ece6e6ad6b9fa1344316f995f7db268bf1b7f9c08ed3e6fb
        • MD5 SHA1 SHA512 SSDEEP

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_lzma.pyd
        • Size 251KB
        • SHA256 4dcd803319e24ba8c8e3d5ce2e02c209bd14a9ab07a540d6e3ae52f69d01e742
        • MD5 SHA1 SHA512 SSDEEP

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_queue.pyd
        • Size 27KB
        • SHA256 613c0fc66b1f2f8dccb47f24f1578137a99c5a62550719f0402f13337ad5c60a
        • MD5 SHA1 SHA512 SSDEEP

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_socket.pyd
        • Size 74KB
        • SHA256 2bb4e5d711fe521e2c9a80f04d2f745f58561dc35f169e06ea17aabf27d334fe
        • MD5 SHA1 SHA512 SSDEEP

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_ssl.pyd
        • Size 120KB
        • SHA256 b9100db5d225c4103f781a6ea4074ce76387467c3a4bba2ac5bfc65870ab6123
        • MD5 SHA1 SHA512 SSDEEP

        _tkinter.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\_tkinter.pyd
        • Size 65KB
        • SHA256 03abcedc663f2f77ba93ca6ff2fcd71b3ad3b4cb7563f0a22a613ed827b08eb7
        • MD5 SHA1 SHA512 SSDEEP

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\base_library.zip
        • Size 766KB
        • SHA256 c7043132a47fb7daf6989229fafb1826eca444cc55438a9d3c2f91c7f435f10b
        • MD5 SHA1 SHA512 SSDEEP

        cacert.pem

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\certifi\cacert.pem
        • Size 257KB
        • SHA256 bb77f13d3fbec9e98bbf28ac95046b44196c7d8f55ab7720061e99991a829197
        • MD5 SHA1 SHA512 SSDEEP

        libcrypto-1_1-x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\libcrypto-1_1-x64.dll
        • Size 2.4MB
        • SHA256 8513e629cd85a984e4a30dfe4b3b7502ab87c8bc920825c11035718cb0211ea0
        • MD5 SHA1 SHA512 SSDEEP

        libssl-1_1-x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\libssl-1_1-x64.dll
        • Size 511KB
        • SHA256 ebe7ffc7eb0b79e29bfc4e408ea27e9b633584dd7bc8e0b5ffc46af19263844b
        • MD5 SHA1 SHA512 SSDEEP

        pyexpat.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\pyexpat.pyd
        • Size 195KB
        • SHA256 d4ca4589c6c8ff5a9f71da2f63c1d214bfeb8662375b42ee201b7c9e07c586a6
        • MD5 SHA1 SHA512 SSDEEP

        python37.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\python37.dll
        • Size 3.6MB
        • SHA256 6f2f87b74aea483a0636fc5c480b294a8103b427a3daf450c1e237c2a2271b1a
        • MD5 SHA1 SHA512 SSDEEP

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\select.pyd
        • Size 26KB
        • SHA256 5724cea789a2ebc148ce277ce042e27432603db2ec64e80b13d37bcb775aee98
        • MD5 SHA1 SHA512 SSDEEP

        tcl86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl86t.dll
        • Size 1.6MB
        • SHA256 f650d6bc321bcda3fc3ac3dec3ac4e473fb0b7b68b6c948581bcfc54653e6768
        • MD5 SHA1 SHA512 SSDEEP

        msgcat-1.6.1.tm

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl8\8.5\msgcat-1.6.1.tm
        • Size 33KB
        • SHA256 4fdf70fdcedef97aa8bd82a02669b066b5dfe7630c92494a130fc7c627b52b55
        • MD5 SHA1 SHA512 SSDEEP

        auto.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\auto.tcl
        • Size 20KB
        • SHA256 f385515658832feb75ee4dce5bd53f7f67f2629077b7d049b86a730a49bd0840
        • MD5 SHA1 SHA512 SSDEEP

        cp1252.enc

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\encoding\cp1252.enc
        • Size 1KB
        • SHA256 14df3ae30e81e7620be6bbb7a9e42083af1ae04d94cf1203565f8a3c0542ace0
        • MD5 SHA1 SHA512

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\http1.0\pkgIndex.tcl
        • Size 735B
        • SHA256 420c4b3088c9dacd21bc348011cac61d7cb283b9bee78ae72eed764ab094651c
        • MD5 SHA1 SHA512

        init.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\init.tcl
        • Size 23KB
        • SHA256 bc492b19308bc011cfcd321f1e6e65e6239d4eeb620cc02f7e9bf89002511d4a
        • MD5 SHA1 SHA512 SSDEEP

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\opt0.4\pkgIndex.tcl
        • Size 607B
        • SHA256 eb9925a8f0fcc7c2a1113968ab0537180e10c9187b139c8371adf821c7b56718
        • MD5 SHA1 SHA512

        package.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\package.tcl
        • Size 22KB
        • SHA256 47b6af117199b1511f6103ec966a58e2fd41f0aba775c44692b2069f6ed10bad
        • MD5 SHA1 SHA512 SSDEEP

        tclIndex

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\tclIndex
        • Size 5KB
        • SHA256 abf7d9d1e86de931096c21820bfa4fd70db1f55005d2db4aa674d86200867806
        • MD5 SHA1 SHA512 SSDEEP

        tm.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tcl\tm.tcl
        • Size 11KB
        • SHA256 6437bd7040206d3f2db734fa482b6e79c68bcc950fba80c544c7f390ba158f9b
        • MD5 SHA1 SHA512 SSDEEP

        tk86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk86t.dll
        • Size 1.4MB
        • SHA256 1a6d0871be2fa7153de22be008a20a5257b721657e6d4b24da8b1f940345d0d5
        • MD5 SHA1 SHA512 SSDEEP

        button.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\button.tcl
        • Size 20KB
        • SHA256 0d95949cfacf0df135a851f7330acc9480b965dac7361151ac67a6c667c6276d
        • MD5 SHA1 SHA512 SSDEEP

        entry.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\entry.tcl
        • Size 16KB
        • SHA256 8f57a23c5190b50fad00bdee9430a615ebebfc47843e702374ae21beb2ad8b06
        • MD5 SHA1 SHA512 SSDEEP

        icons.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\icons.tcl
        • Size 10KB
        • SHA256 a78388d68600331d06bb14a4289bc1a46295f48cec31ceff5ae783846ea4d161
        • MD5 SHA1 SHA512 SSDEEP

        listbox.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\listbox.tcl
        • Size 14KB
        • SHA256 39721233855e97bfa508959b6dd91e1924456e381d36fdfc845e589d82b1b0cc
        • MD5 SHA1 SHA512 SSDEEP

        menu.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\menu.tcl
        • Size 37KB
        • SHA256 564ac0040176cc5744e3860abc36b5ffbc648da20b26a710dc3414eae487299b
        • MD5 SHA1 SHA512 SSDEEP

        panedwindow.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\panedwindow.tcl
        • Size 5KB
        • SHA256 4adf738b17691489c71c4b9d9a64b12961ada8667b81856f7adbc61dffeadf29
        • MD5 SHA1 SHA512 SSDEEP

        pkgIndex.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\pkgIndex.tcl
        • Size 363B
        • SHA256 cd44ee7f76c37c0c522bd0cfca41c38cdeddc74392b2191a3af1a63d9d18888e
        • MD5 SHA1 SHA512

        scale.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\scale.tcl
        • Size 7KB
        • SHA256 58c662dd3d2c653786b05aa2c88831f4e971b9105e4869d866fb6186e83ed365
        • MD5 SHA1 SHA512 SSDEEP

        scrlbar.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\scrlbar.tcl
        • Size 12KB
        • SHA256 6ba3e2d62bd4856d7d7ae87709fcaa23d81efc38c375c6c5d91639555a84c35d
        • MD5 SHA1 SHA512 SSDEEP

        tk.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\tk\tk.tcl
        • Size 22KB
        • SHA256 e1067a0668debb2d8e8ec3b7bc1aec3723627649832b20333f9369f28e4dfdbf
        • MD5 SHA1 SHA512 SSDEEP

        ucrtbase.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\ucrtbase.dll
        • Size 961KB
        • SHA256 4918f2e631ef1ae34c7863fa4f3bd7663b2fdf0fa160c0de507ed343484ac806
        • MD5 SHA1 SHA512 SSDEEP

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47882\unicodedata.pyd
        • Size 1.0MB
        • SHA256 2c5f5abf982e8b4bb5e28d217a5e437907acfb7a7e9ee96cd9fa64c4ba304418
        • MD5 SHA1 SHA512 SSDEEP