{
  "ml": {
    "v": "4",
    "fs": [
      {
        "id": 0,
        "prob": 0.9999847412109375,
        "class": 2
      }
    ],
    "prob": 0.99998474,
    "class": 2,
    "models": [
      {
        "m": "az",
        "prob": 0.9987571,
        "class": 1
      },
      {
        "m": "az/scripts",
        "prob": 0.99998367,
        "class": 2
      },
      {
        "m": "az/php",
        "prob": 0.99998474,
        "class": 2
      }
    ],
    "version": "v16.16",
    "thresholds": [
      0.9961138,
      0.99909174
    ],
    "analyzed_at": "2026-05-08T23:15:16Z"
  },
  "path": "aces.php",
  "raw": {
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        "k": {
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          "source.imports[1]": "chmod",
          "source.imports[2]": "eval",
          "source.imports[3]": "gzuncompress",
          "source.imports[4]": "mail",
          "source.strings[0]": "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",
          "source.strings[1]": "qqifquaqdzvp",
          "source.strings[2]": "tdluhqtnmzr",
          "source.strings[3]": "vwkxlpc",
          "source.strings[4]": "yfbhn : ",
          "source.strings[5]": "ylxqjqbcn",
          "source.has_imports": true
        },
        "x": 296,
        "id": 0,
        "is": [
          "eval",
          "gzuncompress",
          "base64_decode",
          "eval",
          "gzuncompress",
          "base64_decode",
          "eval",
          "gzuncompress",
          "base64_decode",
          "eval",
          "gzuncompress",
          "base64_decode",
          "eval",
          "gzuncompress",
          "base64_decode",
          "eval",
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          "base64_decode",
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          "gzuncompress",
          "base64_decode",
          "base64_decode",
          "base64_decode",
          "base64_decode",
          "base64_decode",
          "mail",
          "chmod"
        ],
        "ms": {
          "file": {
            "size": 5569.0
          },
          "text": {
            "digit_ratio": 0.14,
            "space_count": 147.0,
            "total_lines": 19.0,
            "char_entropy": 6.11,
            "unique_chars": 84.0,
            "import_density": 142.11,
            "lines_over_200": 1.0,
            "lines_over_500": 1.0,
            "string_density": 1.37,
            "avg_line_length": 291.11,
            "lines_over_1000": 1.0,
            "max_line_length": 5060.0,
            "empty_line_ratio": 0.58,
            "last_line_length": 22.0,
            "long_token_count": 7.0,
            "most_common_char": "p",
            "whitespace_ratio": 0.03,
            "most_common_ratio": 0.03,
            "identifier_density": 2.26,
            "line_length_stddev": 1124.31,
            "encoded_string_ratio": 0.54,
            "normalized_import_count": 6.19,
            "normalized_string_count": 5.96,
            "repeated_char_sequences": 3.0,
            "max_inline_whitespace_run": 1.0,
            "trailing_whitespace_lines": 14.0,
            "normalized_unique_identifiers": 2.82
          },
          "imports": {
            "total": 27.0,
            "unique_modules": 5.0,
            "third_party_count": 27.0,
            "third_party_ratio": 1.0
          },
          "strings": {
            "total": 26.0,
            "avg_length": 367.92,
            "max_length": 676.0,
            "avg_entropy": 4.48,
            "total_bytes": 9566.0,
            "entropy_stddev": 1.6,
            "base64_candidates": 14.0,
            "high_entropy_count": 14.0
          },
          "comments": {},
          "functions": {},
          "identifiers": {
            "total": 43.0,
            "avg_length": 8.25,
            "max_length": 13.0,
            "min_length": 4.0,
            "avg_entropy": 2.69,
            "reuse_ratio": 0.28,
            "unique_count": 12.0,
            "length_stddev": 3.39,
            "has_digit_ratio": 0.08,
            "all_lowercase_ratio": 0.75,
            "all_uppercase_ratio": 0.17,
            "double_underscore_count": 1.0,
            "underscore_prefix_count": 2.0
          }
        },
        "ss": [
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          ],
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          ],
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          ],
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          ],
          [
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            "eNpdUs1u00AQfpWNlYMdrDhO89dEOZTKolEpQYkBoRpZU+86u8TZtdZr1X6A3jhy4Q248gxUvAavwjhpgWQPO/+ab74ZkdottstN7XVeZkpRKeRnmJIFyUSyJbUqNWGg"
          ],
          [
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          ],
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          ],
          [
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            "eNpdUs1u00AQfpWNlYMdrDhO89dEOZTKolEpQYkBoRpZU+86u8TZtdZr1X6A3jhy4Q248gxUvAavwjhpgWQPO/+ab74ZkdottstN7XVeZkpRKeRnmJIFyUSyJbUqNWGg"
          ],
          [
            5097,
            "ylxqjqbcn"
          ],
          [
            5098,
            "ylxqjqbcn"
          ],
          [
            5144,
            "nrsf"
          ],
          [
            5145,
            "nrsf"
          ],
          [
            5194,
            "tdluhqtnmzr"
          ],
          [
            5195,
            "tdluhqtnmzr"
          ],
          [
            5250,
            "qqifquaqdzvp"
          ],
          [
            5251,
            "qqifquaqdzvp"
          ],
          [
            5362,
            "vwkxlpc"
          ],
          [
            5363,
            "vwkxlpc"
          ],
          [
            5385,
            "yfbhn : "
          ],
          [
            5386,
            "yfbhn : "
          ]
        ],
        "sz": 5569,
        "ts": [
          {
            "a": "T1027",
            "c": 0.8999999761581421,
            "d": "Dense base64_decode calls",
            "e": [
              "base64_decode"
            ],
            "i": "objectives/anti-static/obfuscation/string/encoding::dense-base64-decode",
            "l": 4,
            "m": "B0032"
          },
          {
            "c": 0.8999999761581421,
            "d": "Very long line",
            "e": [
              "text.max_line_length = 5060.00"
            ],
            "i": "metadata/file/text/metrics::single-long-line",
            "l": 1
          },
          {
            "a": "T1505.003",
            "c": 0.8799999952316284,
            "d": "Regex component marker",
            "e": [
              "eval"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/exec::dangerous-php-function-cluster--rx-16",
            "l": 1,
            "m": "B0030"
          },
          {
            "a": "T1505.003",
            "c": 0.8500000238418579,
            "d": "PHP request superglobal access",
            "e": [
              "$_POST"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/upload::php-request-variadic-function-call",
            "l": 3,
            "m": "B0030"
          },
          {
            "a": "T1027",
            "c": 0.8999999761581421,
            "d": "Exactly one line exceeds 1000 chars",
            "e": [
              "text.lines_over_1000 = 1.00"
            ],
            "i": "objectives/anti-static/obfuscation/code-metrics/structure::single-long-line-outlier",
            "l": 1,
            "m": "B0032"
          },
          {
            "a": "T1059.006",
            "c": 0.75,
            "d": "PHP eval() token present",
            "e": [
              "eval"
            ],
            "i": "micro-behaviors/process/interpreter/eval::eval-symbol",
            "l": 4,
            "m": "E1059"
          },
          {
            "a": "T1505.003",
            "c": 0.949999988079071,
            "d": "Regex component marker",
            "e": [
              "eval(gzuncompress("
            ],
            "i": "objectives/command-and-control/backdoor/webshell/decoder::eval-decoder-chain--rx-2",
            "l": 1,
            "m": "B0030"
          },
          {
            "a": "T1059",
            "c": 0.800000011920929,
            "d": "Self-reference via __FILE__",
            "e": [
              "__FILE__"
            ],
            "i": "micro-behaviors/fs/read/self::self-file-reference",
            "l": 3
          },
          {
            "a": "T1505.003",
            "c": 0.4000000059604645,
            "d": "PHP $_POST parameter access",
            "e": [
              "$_POST["
            ],
            "i": "objectives/command-and-control/backdoor/webshell/request::php-post",
            "l": 1,
            "m": "B0030"
          },
          {
            "a": "T1505.003",
            "d": "PHP open tag",
            "e": [
              "\u003c?php"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/request::php-tag",
            "l": 1,
            "m": "B0030"
          },
          {
            "a": "T1505.003",
            "c": 0.8999999761581421,
            "d": "PHP source imports base64_decode",
            "e": [
              "[base64_decode, chmod, eval, gzuncompress, mail]"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/stager::source-import-base64-decode",
            "l": 1
          },
          {
            "a": "T1222",
            "c": 0.699999988079071,
            "d": "Changes file permissions via chmod()",
            "e": [
              "chmod"
            ],
            "i": "micro-behaviors/fs/chmod/modify::chmod-call",
            "l": 3
          },
          {
            "a": "T1505.003",
            "c": 0.9900000095367432,
            "d": "Decodes a large embedded payload (base64)",
            "e": [
              "base64_decode('eNpdUs1u00AQfpWNlYMdrDhO89dEOZTKolEpQYkBoRpZU+86u8TZtdZr1X6A3jhy4Q248gxUvAavwjhpgWQPO/+ab74ZkdottstN7XVeZkpRKeRnm"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/decoder::eval-base64-large-payload",
            "l": 4,
            "m": "B0030"
          },
          {
            "a": "T1027",
            "c": 0.8799999952316284,
            "d": "Dense gzip decompression",
            "e": [
              "gzuncompress("
            ],
            "i": "objectives/anti-static/obfuscation/string/encoding::dense-gzip-decode",
            "l": 4,
            "m": "B0032"
          },
          {
            "c": 1.0,
            "d": "PHP mail() function call",
            "e": [
              "mail"
            ],
            "i": "micro-behaviors/process/create/exec::php-mail",
            "l": 3
          },
          {
            "a": "T1505.003",
            "c": 0.8600000143051147,
            "d": "Very long embedded string",
            "e": [
              "strings.max_length = 676.00"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/stager::very-long-string",
            "l": 1
          },
          {
            "a": "T1059",
            "c": 0.8500000238418579,
            "d": "HTTP POST parameter access ($_POST)",
            "e": [
              "$_POST"
            ],
            "i": "micro-behaviors/communications/http/request/params::post-dup",
            "l": 3
          },
          {
            "a": "T1027",
            "c": 0.800000011920929,
            "d": "High entropy source string literals",
            "e": [
              "strings.avg_entropy = 4.48"
            ],
            "i": "objectives/anti-static/obfuscation/code-metrics/source::high-entropy-strings",
            "l": 3,
            "m": "B0032"
          },
          {
            "a": "T1027",
            "c": 0.699999988079071,
            "d": "Very low whitespace ratio (minified/compressed)",
            "e": [
              "text.whitespace_ratio = 0.03"
            ],
            "i": "objectives/anti-static/obfuscation/code-metrics/structure::low-whitespace",
            "l": 2,
            "m": "B0032"
          },
          {
            "c": 0.6000000238418579,
            "d": "Very long base64 strings present",
            "e": [
              "eNpdUs1u00AQfpWNlYMdrDhO89dEOZTKolEpQYkBoRpZU+86u8TZtdZr1X6A3jhy4Q248gxUvAavwjhpgWQPO/+ab74ZkdottstN7XVeZkpRKeRnmJIFyUSyJbUqNWGg"
            ],
            "i": "objectives/anti-static/obfuscation/string/base64::long-base64-in-strings",
            "l": 3
          },
          {
            "c": 0.699999988079071,
            "d": "AJAX request handler pattern",
            "e": [
              "$_POST['qqifquaqdzvp']",
              "$_POST['tdluhqtnmzr']",
              "$_POST['nrsf']",
              "$_POST['ylxqjqbcn']"
            ],
            "i": "objectives/command-and-control/backdoor/webshell/ui::ajax-handler",
            "l": 4,
            "m": "B0030"
          },
          {
            "a": "T1027",
            "c": 0.8999999761581421,
            "d": "PHP source contains very long line",
            "e": [
              "text.max_line_length = 5060.00"
            ],
            "i": "objectives/anti-static/obfuscation/code-metrics/identifiers::php-single-long-line",
            "l": 4,
            "m": "B0032"
          },
          {
            "a": "T1027",
            "c": 0.800000011920929,
            "d": "High overall text entropy (encoded",
            "e": [
              "text.char_entropy = 6.11"
            ],
            "i": "objectives/anti-static/obfuscation/code-metrics/structure::high-text-entropy",
            "l": 2,
            "m": "B0032"
          },
          {
            "a": "T1027",
            "c": 0.949999988079071,
            "d": "Multi-layer PHP obfuscation",
            "e": [
              "gzuncompress(",
              "base64_decode"
            ],
            "i": "objectives/anti-static/obfuscation/string/encoding::php-multi-layer-obfuscation",
            "l": 4,
            "m": "B0032"
          },
          {
            "a": "T1505.003",
            "c": 0.9700000286102295,
            "d": "PHP decoder eval webshell",
            "e": [
              "base64_decode('eNpdUs1u00AQfpWNlYMdrDhO89dEOZTKolEpQYkBoRpZU+86u8TZtdZr1X6A3jhy4Q248gxUvAavwjhpgWQPO/+ab74ZkdottstN7XVeZkpRKeRnm",
              "$_POST",
              "eval(gzuncompress("
            ],
            "i": "objectives/command-and-control/backdoor/webshell/decoder::php-decoder-eval-webshell",
            "l": 5,
            "m": "B0030"
          },
          {
            "c": 0.8999999761581421,
            "d": "PHP webshell which directly eval()s obfuscated string",
            "e": [
              "eval(gzuncompress(base64_decode",
              "\u003c?",
              "\u003c?php"
            ],
            "i": "third_party/SigBase/WEBSHELL/PHP/Gzinflated",
            "l": 5
          },
          {
            "c": 0.8999999761581421,
            "d": "PHP webshell using $a($code) for kind of eval with encoded blob to decode, e.g. b374k",
            "e": [
              "eval(",
              "\u003c?",
              "\u003c?php"
            ],
            "i": "third_party/SigBase/WEBSHELL/PHP/Dynamic/Big",
            "l": 5
          },
          {
            "c": 0.8999999761581421,
            "d": "PHP webshell using some kind of eval with encoded blob to decode, which is checked with YARAs math.entropy module",
            "e": [
              "eval(g",
              "\u003c?php",
              "\u003c?"
            ],
            "i": "third_party/SigBase/WEBSHELL/PHP/Encoded/Big",
            "l": 5
          },
          {
            "c": 0.8999999761581421,
            "d": "Known PHP Webshells which contain unique strings, lousy rule for low hanging fruits. Most are catched by other rules in here but maybe these catch different versions.",
            "e": [
              "\u003c?php eval(",
              "\u003c?",
              "\u003c?php"
            ],
            "i": "third_party/SigBase/WEBSHELL/PHP/By/String/Known/Webshell",
            "l": 5
          }
        ],
        "sha": "c44a4d3bfa552a86aa6f07a21ecb8f4a0ec778ddcf33a6fb3932eafefea1dac8",
        "path": "/data/samples/bad/datasets/awesome-malware/PHP/aces.php",
        "type": "php"
      }
    ],
    "tv": "bef72"
  }
}